For a class, I assessed flow regulation on the Yampa River in western Colorado and the adjoining segments of the Green River in Colorado and eastern Utah. I used a database of dams in the region from the Central Arizona Project and identified other impoundments with imagery and verified via Internet searches.
I write a lot of spatial data analysis code using ArcGIS’s Python package, arcpy. Sometimes we need to automate map generation as part of that work, but with the split of the arcpy.mapping library between ArcMap and ArcGIS Pro, developers had to target two different APIs in order to make their code compatible with ArcMap
I receive a number of requests for additional instruction from former students who have taken one class or another. I decided to combine my tutorials for water and ecosystem analysis in ArcGIS into a single book on LeanPub, which allows for work in progress publications, making it easy for me to combine some of my
I led a team of people using FEMA’s Hazus-MH (Multi-Hazard) software to model flood risk to 2 dozen Illinois communities as part of a larger project to measure perceived vs actual risk of flood in those communities. Hazus can be finicky software, so we tried multiple routes, including Hazus’s standard modelling methods and a modified
This week, I needed to convert a number of polygon feature classes to raster. Some of these feature classes included large numbers of features that were small relative to the cell size of the raster. Because of this, they wouldn’t get captured at all in the conversion to raster using ArcGIS’ Polygon to Raster tool,