Same same, but different

Nice resumé of current satellites and their characteristics.

Neat utility (also with Firefox plugin) to download a bunch of files via HTTP from a server.

This visualization gives an overview of the whole citation network. The colors represent the four main groups of journals, which are further subdivided into fields in the outer ring. The segments of the inner ring represent the individual journals, scaled by Eigenfactor™ Score. In the initial view, the top 1000 citation links are plotted. Line size and opacity represents connection strength.

Nice visualization of people moving from one place to another.

Nice Web GIS application from the swiss government.

The concept behind BBC Dimensions is relatively simple: take a specific important place, event or ‘thing’, and overlay these artefacts onto a map of one’s local neighborhood.

Just to bookmark it somewhere… Interview at WebValley 2010…

Takes CSV or tab-delimited data from Excel and converts it into several web-friendly formats, include JSON and XML.

Great script (in CSS and Javascript) which makes it really easy to display boxplots on a website. Great!

Wonna concatenate numerous fields to obtain all values in a single cell? Here’s the script:

Sub ConcatenateAll()

End Sub

And in order to insert a little bit more complicated string in ArcGIS’s Field Calculator, you need to do this:

"<img src='http://localhost/graph.php?data=36,36,37," & Int([wohnfl_per]) & "' />"

Easy, easy… In Spatial Analyst -> Raster Calculator do:

isnull([My Raster] <= 0, [My Raster])

Just working with some extensive raster data sets. And running into a problem – that is, the values of the raster, although integer, are not being displayed. Here is a solution:

Use the “Build Raster Attribute Table”. And if an error is coming up concerning the reaching of a limit, then use the advanced settings utility has an option to set maximum number of attribute entries.
The utility should be in your install location in the Utilities folder (by default – C:\Program Files\ArcGIS\Utilities). Run the AdvancedArcMapSettings executable and select the Raster tab.

Need to debug AJAX? Beside some tips I found on the Net, here is one I found particularly useful, at least in my current case. Just use a

tail -f /private/var/log/apache2/access_log

Or

tail -f /private/var/log/apache2/error_log

which displays the latest log entries… which can help to solve some major issues.

Great project. Traveling around the world with solar energy. Wow!

Great visualization of 24 hours of air traffic. Shows well, similar to the Nightlights of the Earth, which regions of the globe are not connected. Impressive!

Attractive and interesting way to sum up the global population.

Gush, sometimes feeling as we’re still living in the 80ies. How do you get data from ArcGIS to GeoServer, classes & colors including?! No easy task. Here is a small lib which makes the export from ArcGIS to SLD possible (with some additional explanations here). Thanks a lot!