Boxplot
Thursday, August 26th, 2010
Great script (in CSS and Javascript) which makes it really easy to display boxplots on a website. Great!
Archive for August, 2010
Excel: Concatenate Multiple Fields
Tuesday, August 24th, 2010Wonna concatenate numerous fields to obtain all values in a single cell? Here’s the script:
Sub ConcatenateAll()
Dim x As String, rng As Range, cel As Range, v_new As Integer, v_old As Integer
With ActiveSheet
Set rng = .Range("F2:F2736")
For Each cel In rng
v_new = Int(cel.Value)
If (v_new <> v_old) Then
x = x & "," & Int(cel.Value)
End If
v_old = v_new
Next
.Range("G2").Value = x
End With
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]) & "' />"
ArcMap: Convert a value to NoData (IsNull)
Tuesday, August 24th, 2010Easy, easy… In Spatial Analyst -> Raster Calculator do:
isnull([My Raster] <= 0, [My Raster])
ArcMap: Raster Data
Tuesday, August 17th, 2010Just 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.
Debugging AJAX
Monday, August 16th, 2010Need 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.
Solartaxi
Monday, August 16th, 2010Great project. Traveling around the world with solar energy. Wow!
Air Traffic Visualization
Sunday, August 15th, 2010Great 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!
Nightlights of the Earth
Sunday, August 15th, 2010
Population Distribution
Friday, August 13th, 2010
Attractive and interesting way to sum up the global population.
ArcGIS to SLD
Tuesday, August 3rd, 2010Export to Mapserver
Tuesday, August 3rd, 2010
Gix, this extension helps GIS developers to migrate ESRI ArcView projects to the most popular Free and Open Source alternatives for Geographic Information Systems (GIS).
Interactive Map
Tuesday, August 3rd, 2010
Like that one. Lightweight, easy, supply of additional information by mouseover. Really neat.