Archive for the ‘Promote’ Category

Natural Earth updated to version 1.2

Tuesday, May 25th, 2010

This update introduces supplementary hydrography features in North America and Europe that quadruple (4x) the number of lakes and rivers there. Many thanks to Tom P. for generalizing the vectors and Preston M. for adding tapering to North America (absent in Europe). In some cases the basic 10m rivers and lakes were modified to fit the new information and that’s been refreshed, as well. The North America data comes from the CEC North America Environmental Atlas. The Europe data extract is kindly provided into the public domain by the European Commission, Joint Research Centre (JRC), thanks Alfred J! Check out their original, higher resolution Europe data.

On the cultural front, North America gets roads and rails. General 10m detail roads and railroads come from the CEC North America Environmental Atlas. The supplementary roads are donated by XNR Productions and are at 1m scale, thanks Laura M. and Rob!

If you have data or time to contribute, especially to flesh out the new transportation and hydro themes, please contact me at nathaniel@naturalearthdata.com.

Note: We are not committing to building out supplementary level of detail in the rest of the world (we’re not THAT crazy!), but will incorporate such data if you contribute it. As always, we edit these data files but you should too before you publish maps using them. Feed us back corrections.

Download new or updated files »
(54.11 MB) version 1.2.0

(below) Rivers and lakes in North America. On the left the version 1.1 hydro features. On the right in color are the new, supplemental version 1.2 hydro features, 4x the density of features at the same 10m linework generalization.

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(below) Rivers and lakes in Europe. On the left the version 1.1 hydro features. On the right in color are the new, supplemental version 1.2 hydro features, 4x the density of features at the same 10m linework generalization.

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(below) Highways (red and blue) and ferry routes in North America.

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(below) Supplemental road detail in North America. Slightly different feature class scheme and data vintage.

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(below) Railroads in North America.

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MoonZoo – Heads Up, Citizen Scientists: The Moon Needs You! (NPR)

Monday, May 24th, 2010

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[Editor's note: Crowd sourcing "id that crater". Check out my post, Race To The Moon with Richard Furno for the original effort 40 years ago to map the moon.]

Republished from National Public Radio.

We’re seeing the most detailed images of the moon’s surface ever captured from afar — thanks to NASA’s Lunar Reconnaissance Orbiter, or LRO. The space probe carries a super-powerful camera, which photographs every bit of the moon’s surface for scientists to examine.

Only one problem: The LRO is doing such a good job that the scientists can’t keep up.

Enter Oxford astrophysicist Chris Lintott. He’s asking amateur astronomers to help review, measure and classify tens of thousands of moon photos streaming to Earth. He has set up the website MoonZoo.org, where anyone can log on, get trained and become a space explorer.

“We need anybody and everybody,” Lintott tells NPR’s Guy Raz on Weekend All Things Considered.

For example, “we ask people to count the craters that they can see … and that tells us all sorts of things about the history and the age of that bit of surface,” Lintott explains.

Continue reading at NPR . . .

Review: Geocart 3 (Kelso)

Friday, May 14th, 2010

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Once a required computer application in many cartography shops in the 1990s, Geocart has come back with a vengeance with Mapthematic’s 3.0 release (Mac and now Windows).

“If map projections are your problem, Geocart is your solution”

While most GIS and remote sensing map software support a couple dozen obligatory projections, Geocart supports over 175 general case projections. Map projections are mathematical formulas for converting the earth’s round shape to a flat surface and their “parameters” can be adjusted to form thousands of specific projections. For comparison, ArcGIS, the popular commercial geographic information system software from E.S.R.I. supports 1/3 as many projections; MaPublisher from Avenza supports 1/2 as many as Geocart.

The program’s author, daan Strebe, is a leading authority in this specialized subject and the new version incorporates corrections to many standard formula resulting in near loss-less projections. Unlike other software packages, Geocart can transform any projection to another projection (full forward and inverse transformation support for all projections). Other map applications can damage data when it is transformed. Furthermore, Geocart 3 introduces a new rendering mode using PixSlice technology to create a sharper, more detailed raster images (examples after the jump). This works both for resizing images and when transforming from one projection to another (reprojecting).

The application manual includes a handy decision tree to assist in what projection to use depending on the map’s topic and geographic coverage. The application includes innovative advanced tools  to visualize the distortion inherent in each projection (sample image).

Pricing: For lapsed users, upgrade pricing is available for $500 with new professional licenses running $860, discount for multiple purchases. Steeply discounted non-commercial and student licenses are available. Price includes map databases (36GB with the pro version!) and, importantly, the new version imports shapefiles, the defacto geodata format.

Full review continued below . . .

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Installation

I tested Geocart using the free, month-long trial (note the watermarks in the screenshots). Download and installation (once for the application, again for the default databases) went quickly but you will need an administrator account to accomplish the install. When the package downloads, it is labeled with your operating system type rather than “Geocart” so in my case I looked for “Mac OS 10.5/10.6″ in my downloads.

The app and included databases each weigh in about 150 mb for 300 Mb of disk space. Rather than collecting associated database files in the Applications folder (Program Files on Windows), they are installed in Library > Application Support > Mapthematics > Databases. If you want quick “template” access to frequently used data, it should be added in that location. The “add recent databases” command partly makes up for this.

Setting up a map document

To start mapping, go to File > New. Then go to Map > New. Multiple maps can be stored in a single Geocart document, each having their own projection parameters and database content.

When making a map, the first step is to determine how large the map dimensions will be and how much geography it will show. The relationship between the two is called map scale. Some databases, like Natural Earth, are set up based on map scales. Using the right database will result in prettier maps that are generalized appropriately (the linework doesn’t look too detailed or too coarse) and smaller files that are easier to work with.

Geocart also includes a useful linework simplification routine when your data is complex and needs to be simplified. This toggle is on by default and is accessed under Map > Generalize vectors. Toggle it on and off to compare the resulting resulting lines, your mileage will vary by map scale, even with the same source database.

Tip: The application takes map scale seriously and includes a tool to calibrate your system under Preferences > Display. This calibration functionality is absent to most other mapping packages.

To add data to the map

Each new map starts with “Stylized World Topo 5400×2700″ raster image in layered with a vector grid (Map > Graticule) in sinusoidal projection. With the map selected, go to Map > Databases. I was able to easily add in shapefiles from Natural Earth, some of which are included in the default databases. If you have existing Geocart 2 format databases, those will import directly, including typesetting databases.

Tip: To modify which databases load for each new map, go to Preferences > New Map Databases. I set mine to use Natural Earth country boundaries but removed the default image database.

Have a scanned map without a projection?

Geocart will help you figure it out. Add the map with File > Place image. (Vectors are not supported at this time). Then align with a map with a vector map database. Adjust the settings of the map until it matches. Then choose File > Export Database. Load the database back into a Geocart map and start projecting.

I was also able to add several map images and quickly georeference them and then deproject to geographic (platte carrée) or into another projection. One was a simple map of the ash plume in Europe in Mercator. The other was a complicated world wall map from National Geographic in Winkle Tripel (examples below).

Tip: When georeferencing an image, maximize both the map and the placed image to fit the window (Map > Scale to Window). Then adjust your Geocart map to use the same boundaries as the placed map image (make an educated guess). Then cycle thru the projections until the vector lines (graticule and country boundaries, etc) begin to match. Mercator and Robinson are common for world maps, a conic like Albers or Lambert is common for country and state maps. Then adjust the projection parameters and fine tune the boundaries and nominal scale and map resolution till everything fits exactly. Finally, export the placed image to database format.

Note: For raster maps that are georeferenced, the exported database file remains in the native projection of the image (it it not transformed to geographic). This does not affect your ability to reproject the image, however

Choose a projection

The familiar icons by projection class are still found in the main menu bar (see screenshot above). With a map selected on the document, choose a different projection (some are even listed in cyrilic and arabic!) and watch the map update in real time.

If you want assistance in choosing a projection (who can remember all their quirks!?), check out Projection > Change Projection. A dialog with the same listing comes up but with descriptions, history, preview maps, and distortion information. Gain insight with the programmer’s unique and comprehensive expert knowledge will help guide your projection choice. While the map is projecting, a progress wheel with a rough remaining time will show in the upper left corner. Advanced datum support and transformation are provided.

Tip: The manual includes a full decision tree for choosing a projection. This is one of the best features of Geocart.

I love interrupted projections like the Goode homolosine and making one in Geocart is a cinch. Simply choose the Goode from the Pseudocylindric menu (oval icon on left) and then chose Projection > Interruptions > Goode Continental. While you’re getting the projection parameters, map size and resolution right, keep the rendering quality at draft (Map > Draft). When the settings are right, change that to Map > Final Quality for more precise results.

All databases in Geocart are geographic with live, on-the-fly transformations into your map’s specified projecting (see exception above for georeferenced images). I added in coastlines, rivers, lakes, country boundaries, US state boundaries into my test vector map. Even on my slowest, older laptop, rendering was responsive for basic usage creating vector world, regional, and country maps.

Tip: If you somehow end up with a strange looking map (off center, etc), choose Projection > Reset Projection and the current projection parameters will revert to defaults

Tip: When using a conic projection like Albers or Lambert, make sure the Projection > Projection Center is set to Latitudinal 0°N.

Geocart 3.0 is a world unto itself, however. While it does import raw data in shapefile format (YES!), it does not currently import or export PRJ files, part of the SHP file specification, the defacto geo data storage and exchange format. Imported SHP files must be in geographic projection. This makes sense in part as Geocart supports many more projections and parameters than most other mapping software packages (3 times as many as ArcMap, 6 times as many as Natural Scene Designer, 2 times as many as MaPublisher and Geographic Imager). Geocart also sometimes uses slightly different formulas for the same projections as the other applications (the author claims Geocart’s implementations fix errors in common formulas, which is probably the case based on my experience with the literature and web source code snippits).

But for the projections that are shared in common, it would be useful to offer PRJ support (including transformations out of the error prone versions), and shapefile export of databases after their coordinates have been transformed (and GeoTIFF for raster).

More importantly, PRJ files offer a quick load of common projection parameters. So if I’m in California I can load up the Albers with the standardized parameters so my data will interoperate with other cartographers working in that area, and they take some of the guess work out of choosing a map projection. Both ArcMap and MaPublisher are better then Geocart in this regard. MapTiler thru Proj4 is the worst. Azimuth (r.i.p.) is the best at setting appropriate projection and parameter for the visible, selected geography.

Tip: If you do have a PRJ file, open it in a text editor and manually copy over the parameters to Geocart. They use a “well known text” structure that is human readable.

Legend editor (stylizing your map)

Geocart includes basic legend editor for setting line and fill styles, appropriate for general reference mapping. Geocart is a general projection tool, not for making thematic maps. The layer sorting of individual databases is adjustable in the Map > Databases dialog.

Tip: Consistent styles can be shared between map projects by going to Preferences > New Map Line Styles.

Testing the limits

Don’t want to plot the entire world? Use Map > Boundaries to set a crop (and speed up map rendering). This window is quite amazing and has both 2d and 3d views with actual spherical trapezoids! Boundaries can be set relative to the projection center and can be a circular diameter, spherical trapezoid, or irregularly shaped “custom” boundary. To remove the boundaries, change the setting back to “Unconstrained”.

Quibble: When adjusting boundaries in most conic projection, your standard parallels should also change. A prompt should be provided in this use case to automatically adjust those to your new view. In the special case of setting standard parallels in Projection > Parameters, it would be helpful if Geocart showed these on a map like in the Projection Center dialog.

Quibble: The draw on map interface in Boundaries needs a little more work for modifying the existing settings. Other apps, like Geographic Imager, allow me to drag the edges of a drawn boundary while in Geocart I have to start over (or use the number fields). It’s also a little wonky when dragging exactly horizontal or vertical (a full latitude or longitude strip). There are also no ticker buttons to increment the parameter values, either. Once you have this set, though, you’re golden so it’s a minor inconvenience.

Next: Rendering quality and speed . . .

nsd5pro_geocart3_rendering_b

Above: Brand X on the left. Geocart at right. Examine the letter forms (U in United Kingdom, N in London, all in Paris, the Ca in Cariff). The Geocart render results in sharper, crisper letter forms with less “pixel burrs”. The demo water mark not with standing.

Rendering quality

The key concept is Geocart creates an optimized map on each render. The original data resolution is stored in the document, but what draws on the screen is determined by the map size and resolution. Set that in Map > Set size and resolution. Once adjusted, the map will fill that space in the window. You can zoom in and out with the normal Cmd-+ and – keyboard shortcuts and the zoom with update in the window title.

When Geocart is set to render in Final mode, its output results in better output than applications that use only nearest neighbor or bicubic interpolation. In the example above, looking at the letter edges on London, the Geocart version is crisper and smoother. This also comes into play at the edges of a world map where the projection distortion is more extreme and is especially important with projecting raster data.

For my heavy-use scenario, I put Geocart up against the latest National Geographic world map

The map is in Winkel Tripel projection. I rasterized the PDF (took about 1 hour with Photoshop on my old laptop) and then loaded the image into Geocart and georeferenced it and saved it out as a database (78 mb, seems small), see section on Adding map data above. I then reprojected it Goode homolosine in Geocart. I also ripped out a platte carrée from Geocart and projected that into Goode in Geographic Imager, Natural Scene Designer, MapTiler (Proj4), and ArcMap.

The final projected Goode image dimensions was 22,700 pixels by 9,910 at 675 mb in TIFF image format. Enough detail to print back out as a wall map or tile for a web map service.

Geocart is built for speed and will utilize all processors, including multicore

Paul Messmer’s under the hood improvements allow the application to make 100% use of all processor cores. I was still able to use other applications while Geocart processed data, however. One side effect of supporting multiple cores is rendering occurs per core in real time, see screenshot below. Geocart also plays nice on idle.

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I tested Geocart on 3 different machines, all Intel Macs running 10.5 or 10.6 from an older laptop to a new desktop towers. Application task completion speed increased directly proportional to the number of cores available.

Fun fact: Geocart uses a Hilbert curve to render the map when utilizing multiple cores to keep memory accesses as local as possible in order to make the best use of the processor caches. This results in seperate render traces on the screen, see image below.

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At best “final” settings, the huge map in Goode homolosine projection described above took 20 min on the 16 core Mac Pro (2 x 2.93 quad core GHz quad-core Intel Xeon with 8 gb of RAM) but 1 hour 20 minutes on an older 4 core Mac Pro with the same RAM configuration. The draft render took significantly less time and was comparable in time and quality to Natural Scene Designer, Geographic Imager, ArcMap, and MapTiler (Proj4).

Because Geocart is always planning for the most general case with the most advanced options, this can slow down it’s rendering compared to other applications (most noticeable when in Final rendering mode). Future versions might speed up if special functions were added for the standard parameter cases. But by the time the programmer did that, the speed difference might be equivalent to increases in hardware speed and cores, so this doesn’t worry me much.

Compared the competition

Geographic Imager ($699 for Adobe Photoshop plugin, add $699 if you don’t already own Photoshop) did not support the interrupted form of the projection and produced confetti until I tweeked the settings. To project vectors, you’d need MaPublisher, a vector plugin from Avenza for Adobe Illustrator, will set you back $1399 plus cost for Illustrator. ArcMap (thousands of dollars) required a RGB (not indexed) version of the geographic TIFF version but insisted on reprojecting into grayscale. Natural Scene Designer ($160) produced the most comparable raster results and ease of use, but at less quality (though faster). It should be noted the Pro version of Natural Scene Designer 5 also supports multiple cores and limited vector shapefile support (raster rendering only), plus better handling of GeoTIFF with TFW export. MapTiler, Mapnik, and other open source GIS options are free but you’ll spend time setting them up and learning their make-by-and-for-programmer quirks.

Visualizing Distortion

Geocart is a good teaching tool as well when using the distortion visualizations and mouseOver readouts (available under Window > Information). The pertinent readouts are Angular deformation, Areal inflation, Scaler distortion, and Scale factor range.

Note: Geocart quit on me once when I tried to use Map > Copy Attributes while visualizing distortion with a very large selected map, but I was not able to replicate the error or any crash in subsequent testing sessions. In general I’ve found the program to be very responsive and to not hang up, even when rendering extremely large maps with multiple databases.

Quibble: The Information panel should display how long it took to render the selected map.

Exporting

On exporting out your final map, vector (PDF) and raster (TIFF, PSB “Photoshop”, and JPG) formats are available. On opening the map in Illustrator, each database layer is conveniently grouped, with clipped content. Geocart could take a page out of IndieMapper’s layered SVG approach where the file format would still be PDF but the groups would be named and even better yet actual PDF layers.

Quibbles: Geocart suffers from the same zealous masking and embedding as other apps. If no boundaries have been defined in Geocart, the clipping masks should not be included. Saving out as PDF will embed the raster databases into the file, like all other programs. On export of the raster formats, an option should be provided to NOT export the vector database layers. Another option should be provided to export each raster database layer to a separate file (or layered TIFF / PSB). Needs to export out a PRJ file for the raster and GeoTIFF with embedded registration, pixel size, and projection tags.

Note: If you’re looking for SHP export, you’ll be disappointed. Though that’s kind of missing the point of Geocart. See “Choose a projection” section above.

Final word

Geocart 3 is a solid release that will satisfy most of your reference mapping needs, especially if projection matters to you. If you liked Geocart 2, you’ll definitely enjoy working with version 3, and on the latest computer hardware it simply screams. The addition of direct shapefile import removes a barrier to geodata access, though more could be made of the PRJ files and DBF attributes. There are still some missing features when compared to version 2 and daan (the programmer) is interested in hearing from the cartography community which should added back. They also seem responsive to fixing some of the usability issues I’ve noted above.

But where are those Kelso Corners, I ask? Besides being a personal soapbox, my blog is named for the “corners” that form when a pseudocylindric or lenticular projection is extended to fill out it’s rectangular bounding box by repeating content that would otherwise only be found on the opposite edge of the map. They are righteously awesome, plus they satisfy non-carto designers  proclivity to design to a boxy grid. However, you can only find these “corners” on a few old print maps; I don’t know of a single digital app that creates them. I’ve staked naming rights ;)

Pros: Over 175 projections (best in industry), support for advanced projection parameters, loss-less reprojection, PixSlice technology for sharper, more detailed raster images. Runs on both Windows and Mac, with support for multiple core processors. Now imports shapefile vector map data. Large document support. Easy to use. Software programmer responsive to emails and forum posts.

Cons: No PRJ support. Does not export GeoTIFF, or world file created after georeferencing images. Does not include a SHP filter in file dialogs, and file dialogs do not remember last browsed directory. Should start with blank new document on launch. Linework generalization engine filters just by Douglas-Peucker in this version, not the smooth bezier curves found in Geocart 2 or the amazing generalization found at MapShaper.org. Rendering in PixSlice can significantly increase render times. No support for scripting/automation. No export back to SHP format (especially with DBF attributes), useful for thematic mapping in a secondary GIS application.

Migration in China: Invisible and heavy shackles (Economist)

Thursday, May 13th, 2010

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[Editor's note: Powerful charting compares official stats to reality for the agricultural "ecosystem refugees" who find themselves in the city. Related: US Census releases data on geographic mobility for 2008.]

Republished from the Economist.

Until China breaks down the barriers between town and countryside, it cannot unleash the buying power of its people—or keep its economy booming.

ON THE hilly streets of Chongqing, men with thick bamboo poles loiter for customers who will pay them to carry loads. The “stick men”, as they are called, hang the items from either end of the poles and heave them up over their shoulders. In a city where the Communist Party chief, Bo Xilai, likes to sing old revolutionary songs, these workers should be hymned as heroes. Yet few of them are even classed as citizens of the city where they live.

Most of the stick men were born in the countryside around Chongqing. (The name covers both the urban centre that served as China’s capital in the second world war, and a hinterland, the size of Scotland, which the city administers.) Since 1953, shortly after the Communists came to power, Chinese citizens have been divided into two strata, urban and rural, not according to where they live but on a hereditary basis. The stick men may have spent all their working lives on the streets of Chongqing, but their household registration papers call them “agricultural”.

The registration system (hukou, in Chinese) was originally intended to stop rural migrants flowing into the cities. Stick men were among the targets. In the early days of Communist rule in Chongqing the authorities rounded up thousands of “vagrants” and sent them to camps (vagrants, said Mao Zedong, “lack constructive qualities”). There they endured forced labour before being packed back to their villages.

201019fbc434Rapid industrial growth over the past three decades has required tearing down migration barriers to exploit the countryside’s huge labour surplus. Hukou, however, still counts for a lot, from access to education, health care and housing to compensation payouts. To be classified as a peasant often means being treated as a second-class citizen. Officials in recent years have frequently talked about “reforming” the system. They have made it easier to acquire urban citizenship, in smaller cities at least. But since late last year the official rhetoric has become more urgent. Policymakers have begun to worry that the country’s massive stimulus spending in response to the global financial crisis could run out of steam. Hukou reform, they believe, could boost rural-urban migration and with it the consumer spending China needs.

In early March 11 Chinese newspapers (it would have been 13, had not two bottled out) defied party strictures and teamed together to publish an extraordinary joint editorial. It called on China’s parliament, the National People’s Congress (NPC), which was then about to hold its annual meeting, to urge the government to scrap the hukou system as soon as possible. “We hope”, it said, “that a bad policy we have suffered for decades will end with our generation, and allow the next generation to truly enjoy the sacred rights of freedom, democracy and equality bestowed by the constitution.” Not since the Tiananmen uprising in 1989 had so many newspapers simultaneously cast aside the restraints imposed by the Communist Party’s mighty Propaganda Department, which micromanages China’s media output.

Continue reading at the Economist . . .

Maps of Mount Saint Helens, 30 years later +Tea Horse Road (NG)

Wednesday, May 12th, 2010

[Editor's note: Two great maps from this month's edition of National Geographic Magazine by Martin Gamache.]

Republished from National Geographic.
Click on each to view larger.

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Cartographies of Time: A History of the Timeline (Daniel Rosenberg + Anthony Grafton)

Friday, May 7th, 2010

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[Editor's note: I've had a couple weeks with this gorgeously illustrated book. The text if readable and informative, but best of all the authors reproduce the example artwork in the flow of their text allowing easy cross-examination (even if it means digging out your magnifying glass). Buy via Powells (they only have 3 left in stock!).]

Republished from Princeton Architectural Press.

What does history look like? How do you draw time?

From the most ancient images to the contemporary, the line has served as the central figure in the representation of time. The linear metaphor is ubiquitous in everyday visual representations of time—in almanacs, calendars, charts, and graphs of all sorts. Even our everyday speech is filled with talk of time having a “before” and an “after” or being “long” and “short.” The timeline is such a familiar part of our mental furniture that it is sometimes hard to remember that we invented it in the first place. And yet, in its modern form, the timeline is not even 250 years old. The story of what came before has never been fully told, until now.

Cartographies of Time is the first comprehensive history of graphic representations of time in Europe and the United States from 1450 to the present. Authors Daniel Rosenberg and Anthony Grafton have crafted a lively history featuring fanciful characters and unexpected twists and turns. From medieval manuscripts to websites, Cartographies of Time features a wide variety of timelines that in their own unique ways—curving, crossing, branching—defy conventional thinking about the form. A fifty-four-foot-long timeline from 1753 is mounted on a scroll and encased in a protective box. Another timeline uses the different parts of the human body to show the genealogies of Jesus Christ and the rulers of Saxony. Ladders created by missionaries in eighteenth-century Oregon illustrate Bible stories in a vertical format to convert Native Americans. Also included is the April 1912 Marconi North Atlantic Communication chart, which tracked ships, including the Titanic, at points in time rather than by their geographic location, alongside little-known works by famous figures, including a historical chronology by the mapmaker Gerardus Mercator and a chronological board game patented by Mark Twain. Presented in a lavishly illustrated edition, Cartographies of Time is a revelation to anyone interested in the role visual forms have played in our evolving conception of history.

Daniel Rosenberg is associate professor of history at the University of Oregon. He has published widely on history, theory, and art, and his work appears frequently in Cabinet magazine, where he is editor-at-large. With Susan Harding, he is editor of Histories of the Future.

Anthony Grafton is the Henry Putnam University Professor at Princeton University. He is the author of numerous books on European history and also writes on a wide variety of topics for the New Republic, American Scholar, the New York Review of Books, and the New Yorker.

Read more at Princeton Architectural Press . . .

UK election map and swingometer (Guardian)

Friday, April 30th, 2010

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[Editor's note: Cartograms (1, 2) are all the storm in the UK in the lead up to the general election later this month. I first noted them via the Financial Times's print edition graphic and then came across this interactive version done by the Guardian (screenshot above). It combines the geography view typical in the US with a cartogram of the same. The cartogram does better at showing overall trends since each enumeration unit (election district) is the same size, where on the geography view some districts are super large and some (around London) are tiny as they are sized by area rather than population / electors. The Guardian's online version has search function as well as mouse over and the geography view zooms in to reveal those tiny districts. What's super amazing is the swingometer. It allows the user to see what would happen if the electorate "swings" towards one party or another both in numbers and on the maps. This would be fabulous to see in the US for our midterms. Quibbles with their map: I can't click and drag in the geography view to move the map, nor can I click and drag the detail box in the UK context map in the geography view. Overall A+ effort. And yet another reason why Steve Jobs, bless his heart, is crazy for thinking HTML5 should be the only game in town. These types of maps excel in Flash's compiled plugin runtime.]

Republished from the Guardian. Monday 5 April 2010.
By Mark McCormick, Jenny Ridley, Alastair Dant, Martin Shuttleworth

Browse the 2010 constituencies and use the three-way swingometer to see how different scenarios affect the outcome. This map is based on 2005 figures, notional or actual, and does not take account of byelection results. Full explanation here

Interact with the original at the Guardian . . .

Maps of Henri Cartier Bresson’s Travels by Adrian Kitzinger @ MoMa

Monday, April 26th, 2010

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[Editor's note: Henri Cartier-Bresson (1908–2004) helped to define photographic modernism starting in the 1930s when he began working for Life and other news "picture" magazines (exhibit at MoMa in New York thru June 28, 2010). He snatched beguiling images from fleeting moments of everyday life. He traveled the whole world over, as this series of maps from Adrian Kitzinger shows. Because he visited some cities more than once, the cartographer employs a clever technique of showing overall trips with colored route lines and visited cities in normal black type. If subsequent visits were made, the city name is underlined in the route color of the 2ndary, tertiary, etc trip. Some indication is also made for the mode of transport. Photo below is from after WWII as a women denounces another for ratting on her to the Nazi secret police during the war.]

Republished from the Museum of Modern Art, New York.

These maps, by Adrian Kitzinger, have been adapted from the maps he made for the detailed chronology of Cartier-Bresson’s travels in the book that accompanies the exhibition. The principal itineraries are named by year and distinguished by color, and are keyed to a descriptive list on each map. Please note that some quite similar colors designate entirely distinct itineraries.

Cartier-Bresson’s travel is rendered as lines (solid by land or sea, dashes by air) following the most probable routes; when a route cannot be reasonably surmised or clearly shown, locales that belong to a single trip share a color code: underscores or colored type. Some more far-flung connections are indicated with dotted arrows. Places Cartier-Bresson visited independently of a recorded itinerary are represented as circles with gray rather than white centers.

View more maps at MoMa . . .

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IndieMapper: Make quality maps without expensive GIS

Friday, April 16th, 2010

[Editor's note: Announced at NACIS in Sacramento October 2009, Indiemapper is now live and priced at $30 / month. The online mapping service allows you to upload data into an easy to use GIS interactive map tool and make beautiful cartographic maps leveraging Color Brewer, TypeBrewer, and Natural Earth. Maps can be shared or published online or export to Illustrator for high-quality print output. Check it out! ]

Republished from Axis Maps.

Indiemapper is the smarter, easier, more elegant way to make thematic maps from digital data.

Indiemapper brings traditional cartography into the 21st century. It’s platform independent, location independent and huge-software-budget independent.

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Continue reading at Axis Maps . . .

Helios Exhibit: Eadweard Muybridge in a Time of Change (Corcoran in DC)

Monday, April 12th, 2010

muybridge-1

[Editor's note: Famous for his "groundbreaking studies of animal and human locomotion, 19th-century photographer Eadweard Muybridge was also an innovative landscape artist and pioneer of documentary subjects." The exhibit looks at all aspects of the artist's work and is open at the Corcoran art gallery in Washington DC now thru July 18th. Cost is $10 per adult, open Weds - Sunday.]

Republished from the Corcoran.

Best known for his groundbreaking studies of animal and human locomotion, 19th-century photographer Eadweard Muybridge was also an innovative landscape artist and pioneer of documentary subjects. Helios: Eadweard Muybridge in a Time of Change is the first retrospective exhibition to examine all aspects of Muybridge’s art.

Structured in a series of thematic sections, the exhibition includes numerous vintage photographs, albums, stereographs, lantern slides, glass negatives and positives, camera equipment, patent models, Zoopraxiscope discs, proof prints, notes, books, and other ephemera. Over 300 objects created between 1858 and 1893 are brought together for the first time from numerous international collections. Muybridge’s only surviving Zoopraxiscope—an apparatus he designed in 1879 to project motion pictures—will also be on view.

Organized by Corcoran chief curator and head of research Philip Brookman, the exhibition will also travel to Tate Britain in London from September 8, 2010 through January 16, 2011, and to the San Francisco Museum of Modern Art from February 26 through June 7, 2011. A catalogue of the exhibition, with new essays by Brookman, Marta Braun, Andy Grundberg, Corey Keller, and Rebecca Solnit, will be published Steidl.

Plan your visit . . .