Great app that involved Google Map API V3, Fusion Table and Google Visualization
http://cga-3.hmdc.harvard.edu/cluster/industry/

Export to CAD from a DEM (ArcGIS/ArcInfo 10)

Export to CAD from a DEM (ArcGIS/ArcInfo 10)
1) Download the DEM and import it in ArcGIS
2) Convert the DEM to a contour file (isolines)
ArcToolBox >> Spatial Analysit >> Surface >> Contour
3) Create a 3D contour line
ArcToolBox >> 3D Analyst Tools >> 3D Features >> Feature To 3D By Attribute
4) Create a CAD .dwg file
ArcToolBox >> Conversion Tools >> To CAD >> Export to CAD

Harvard ABCD GIS Presentation - Rwanda Genocide Map

Testing WorldMap App

Open Street Map Party at MIT

Hi there,

today I was at the OSM party at MIT (http://osmbos1.eventbrite.com/). It was pretty nice starting to edit OSM database,
and knowing better about this awesome project. I started to map features on my own
little mountain village, very fun seeing how the map change in few minutes....

Perform Cost Path Analysis between two points

Today I help a student to deal with Cost Path Analysis between two points. Below some tips:

• Identify your study area (polygon layer) and use this one to cut your DEM by using Extraction by Mask function. Be sure you are working in a project coordinate system (slope requires it).
• Use the new DEM to calculate the slope raster (Slope function)
• Select only one of the two point (Point A)
• Perform a Cost Distance; as input raster enter the point layer. Make sure you build also a Back Link raster.
• Select the only the second point (Point B)
• Perform a Cost Path; as input raster enter the point layer.

XML, XPath, XQuery Harvard Class

Just forgot to tell you that since the begging of September, I have started a Xml/XPath class
at Harvard Extension School. The class is pretty tough, but so far I really enjoy my self.
By the way, I have also stared to use Amazon EC2