python and spatial analyst

[WillemVerhagen]

Hi all,

Hope you can help me. i'm doing the online course intro to spatial analyst in ArcMap 10.1.
I have the spatial analyst toolbox installed and active trough the customize windows.

However, when I try to use a command in the python window, e.g. slope, the command is not recognized and I receive an error message. So probably I should load or activate something. however, this is not explained in the intro excercise so I'm rather stuck and could not find anything in the help files.

probably a silly easy question but i hope something is willing to help me out

[XanderBakker · Accepted solution]

Hi all,

Hope you can help me. i'm doing the online course intro to spatial analyst in ArcMap 10.1.
I have the spatial analyst toolbox installed and active trough the customize windows.

However, when I try to use a command in the python window, e.g. slope, the command is not recognized and I receive an error message. So probably I should load or activate something. however, this is not explained in the intro excercise so I'm rather stuck and could not find anything in the help files.

probably a silly easy question but i hope something is willing to help me out

Hi Willem,

In order to use the "Slope" command you can either write:

arcpy.sa.Slope(in_raster, {output_measurement}, {z_factor}) # using the Slope function from Spatial Analyst

or:

arcpy.Slope_3d(in_raster, out_raster, {output_measurement}, {z_factor}) # using the Slope function from 3D Analyst

...or import the sa (Spatial Analyst) module and call the Slope function directly:

from arcpy.sa import * Slope(in_raster, {output_measurement}, {z_factor})

Kind regards,

Xander