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Wednesday, June 22, 2022

GIS 5103 Working with Rasters

 For our final lab we learned about working with rasters. We learned how to describe rasters, use raster object in geoprocessing, use map algebra operators and how to work with classes to define raster tool parameters. We were introduced to arcpy.sa (Spatial Analysis) which provides access to a number of geoprocessing tools to work with raster data as we did in this lab as well as with imagery. 

For our lab assignment we were tasked with creating a raster output that identifies areas with a particular set of parameters: slop, aspect, and land cover type. I created  a workflow to help me get organized to create my script in Spyder.




There numerous challenges were encountered in this weeks lab.  Indentation was an ever-present concern especially since we were incorporating an if else statement. We also had to create several variables for our calculations on slop and aspect. This created multiple temporary rasters which we had to combine into one final raster and save. I saved mins as a .tif and fortunately achieved the desire results.


While I am by no means a Python expert, I do feel like this class has given me a better understanding of Python and the workings of the preloaded goeprocessing tools found in ArcGIS Pro. 

 


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