AnsweredAssumed Answered

Raster Calculator Output Empty

Question asked by Acywood on Dec 15, 2016
Latest reply on Dec 23, 2016 by curtvprice

Hello,

 

I'm currently learning the very basics of ArcMap 10.2.2. I've bought a few textbooks in a series called An Introduction to GIS in Marine Biology and am working through a few simple exercises. Currently, I need to merge two raster layers, one made from point data and another made from polyline, into a single raster layer. I'm supposed to use the Map Algebra function, but unfortunately, I seem to be getting an empty output every time I try. My raster calculator function is extremely simple:

 

"bnd_raster_2" + "track_raster"

 

with the output being:

 

C:\GIS_EXERCISES\pa_raster

 

I am pretty confident that I created my raster layer correctly and have been told by a few sources that its possibly my Python that is the problem. I don't know how to address that issue currently. I've used Python 2.7.5 and 2.7.11 and both create empty file outputs. If anyone has any advice regarding how to check that my Python is alright of if somehow my raster calculator isn't set up properly, please let me know.

 

My next exercise depends on the pa_raster layer being created from merging the two raster layers. I was hoping someone could attempt to add the two together the rasters I've attached below on their own ArcMap or similar software to see if indeed I've made my rasters correctly. It would be very much appreciated.

 

Again, I'm very new to this. Please let me know if I'm using any terms wrong or am understanding any concepts wrong. I'm very excited to learn as much as I can and any input helps so much!

 

Thank you so much!

-AW

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