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Tagged with aspect spatial-analyst
7 questions
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12
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Aspect function creates blank file [duplicate]
I am trying to make get aspect from an elevation file but the code keeps making a blank file
import arcpy, os
from arcpy import env
from arcpy.sa import *
env.overwriteOutput = True
elevation = r&...
0
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0
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114
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Aspect function creating empty raster using ArcPy
I am trying to derive the aspect from an elevation file. When I run the function it creates a new file but the file is empty. my code:
import arcpy, os
from arcpy import env
from arcpy.sa import *
env....
0
votes
1
answer
93
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Calculating area of pixles for certain Aspect value per specific area?
I am using ArcGIS 10.6. I have the aspect (raster file) for the roof of buildings at the city scale. Now I want to calculate the area of each aspect group per building. I tied zonal statistics, zonal ...
- 19
4
votes
1
answer
1k
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What is the difference between Aspect and Flow Direction tools?
There are two seemingly identical Spatial Analysis tools:
(1) Surface -> Aspect:
Derives aspect from a raster surface. The aspect identifies the
downslope direction of the maximum rate of change ...
- 223
6
votes
1
answer
3k
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Understanding aspect units in QGIS
I created an aspect raster form a DEM raster in QGIS 2.14, and got this results:
I know that the results refer to degree units , but still i don't understand how to read the map result- i mean to ...
- 4,082
7
votes
1
answer
2k
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What is the "57.29578" that ArcGIS uses in Aspect calculation?
ArcGIS Desktop Help on How Aspect works explains the calculations used, but introduces the for me magic number of 57.29578:
aspect = 57.29578 * atan2 ([dz/dy], -[dz/dx])
Where does this number come ...
- 435
1
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2
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405
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How to find out the density or percentage of vegetation in each aspect
I am trying to find out what is controlling vegetation in an area of Saudi Arabia for my masters project and I am currently focusing on the aspect of slopes in the area.
I have a DEM layer and I have ...
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