Open Source GIS Blog

As of 4/15, 71 healthcare workers have died of coronavirus (COVID-19) in the US. Updated numbers at:  https://jontheepi.shinyapps.io/hcwcoro...

Created a quick app based on news reports:   https://jontheepi.shinyapps.io/hcwcoronavirus/ . Eight-related deaths so far. I hope not to ...

I decided to talk a walk on the wild-side and examined R as a GIS for spatial analysis.  I hope to use several of R's spatial statistics...

About 1 percent of all tweets are geotagged.  Fortunately, most of these geotagged tweets fall into public stream data. Of course, this on...

QGIS 2.8 Wien was released, so it is a good time to review QGIS's basic spatial analysis capabilities for vector data--starting with poi...

SaTScan is a program for detecting clusters over space, time, and space-time.  It is available for Windows, Mac OS X, and Linux.  SaTScan 9...

SaTScan requires several different types of files for analysis : 1)  A case file with a column for the geographic unit. day, month or year ...

FGBASE  is a new open source software for using scan statistics on gridded data.  Unlike SaTScan , FGBASE only currently runs on Mac OS X (1...

R has a package  ( geonames ) for connecting to the GeoNames API .  If you are not familiar with GeoNames be sure to check out this previo...

What can you look forward to from the Open Source GIS Blog--in the year ahead?  Well I hope to get the New Year off to a good start by finis...

Many spatial analyses begin with using kernel density in GIS.  In ArcGIS, kernel density is part of the Spatial Analyst Extension.  However,...

Do not look at the title twice!  Yes, this post is about non-GIS open source software.  However, these open-source programs make great compa...