Archive for the ‘GIS Programming’ Category

Twitter/Latitude Location Updater

Today Google opened up the Latitude feed so you can get your Latitude location in a KML or JSON feed.  I have been working on a longer term project to create a Twitter updater service but to play with the Latitude feed I wrote a quick Ruby script.  With the json and twitter gems it [...]

May 4, 2009   Posted in: GIS Programming, Mash-up, Ruby  Comments Closed

Map Projections: A Working Manual Available Online

When I was on my quest to find Map Projections: A Working Manual I felt lucky to find a copy of it in my coworker’s office.  A month later I discovered another coworker also had a copy of it.  Now I have discovered it is available online from the USGS in PDF.  Unfortunately it appears to [...]

April 14, 2009   Posted in: GIS Programming, GIS Reference  Comments Closed

Gecoding Fact or Fiction?

This week the L.A. Times reported a geocoding glitch that displayed crimes that could not be mapped defaulting close to city hall. To GIS industry folks something like this happening may not be a surprise.  According to Wikipedia “Geocoding is the process of finding associated geographic coordinates (often expressed as latitude and longitude) from other [...]

April 7, 2009   Posted in: GIS Programming, Map Commentary  Comments Closed

Converting Unprojected Bounding Box to the Miller Projection

Where I work we frequently use bounding boxes to add maps to reports. Originally all of our base information was in Latitude/Longitude, this didn’t provide a very pleasing map. At some point an effort was made to switch everything to the Miller Projection, which is a modification of the Mercator Projection . The [...]

March 15, 2009  Tags:   Posted in: GIS Programming  Comments Closed