useing tools with Python

Discussion created by zwerg on Mar 24, 2011
Latest reply on Mar 24, 2011 by Dan_Patterson

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Hello,
I just started the Spatial Analyst training and got a problem already. I cant start tools in the command line of python. The instruction says "Only tools that are in ArcToolbox can be run from the command line". So, the spatial analyst extension is enabled and the tools work fine in the toolbox, but when I type the tool in the command line he cant find it (for slope e.g. he only finds sys). Do I have to connect Python with my toolbox in some way?
I^ve reinstalled ArcInfo allready (my whole system) but nothing changed.
I hope someone could help.
Thanks

Greetings

m

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Dan_Patterson Mar 24, 2011 2:37 AM
If you are using version 10 of ArcMap, see the code examples here
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000v2000000.htm
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zwerg Mar 24, 2011 3:30 AM
Thanks for the help. I´ve found a free training (Using Python in ArcGIS Desktop 10) ,too. But I totally got no clue about programming and python. Therefore I need some help to find a starting point.

So e.g. I want to slope my input Raster (Elev) into a output (SlpDeg) and the unit is Degree. This is the code from ArcGis10 Help:

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outSlope = Slope("elevation", "DEGREE", 0.3043)
outSlope.save("C:/sapyexamples/output/outslope01")

And I modified it this way

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "Elev"

outSlope = Slope("elevation", "DEGREE", 0.3043) ???

outSlope.save("SlpDeg")

How to modify the outSlope?

Thanks
Greetings
m
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Dan_Patterson

Mar 24, 2011 3:48 AM

you need to specify a workspace for the grid to go to

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "c:/putYourFolderNameHereAsInTheExample")
outSlope = Slope("Elev","DEGREE", 0.3043)
outSlope.save("c:/putYourFolderNameHereAsInTheExample/SlpDeg")

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