topic Re: new to python... in Python Questions

new to python...

ChrisJ — Fri, 22 Mar 2013 16:43:33 GMT

new to python AND new to arcgis 9.3, coming from mapbasic background.

I'm learning some python for scripting in 9.3, and come up with this:

import arcgisscripting

# create the geoprocessor object
gp = arcgisscripting.create(9.3)

gp.workspace = "I:\PDtest"

# process
gp.PointDistance_analysis("stores.shp", "competitors.shp", "output.dbf", "1000 meters")

...it runs fine, but, what if I wanted to have a user input the names etc into a text box before this continued? like so:

workspace_entry = raw_input('please enter path to workspace')
layer1 = raw_input('please enter first layer')
layer2 = raw_input('please enter second layer')

or something like that; it crashes when I try, but still very new to all of this...

thanks,

cj

Re: new to python...

BruceNielsen — Sat, 11 Dec 2021 14:22:23 GMT

The answer depends on if you are running this script standalone, or as a tool from ArcMap. As a standalone, the raw_input should work:

import arcgisscripting

# create the geoprocessor object
gp = arcgisscripting.create(9.3)

gp.workspace = raw_input('please enter path to workspace')

# process
layer1 = raw_input('please enter first layer')
layer2 = raw_input('please enter second layer')
gp.PointDistance_analysis(layer1, layer2, "output.dbf", "1000 meters")

etc.

If this script is being run as a tool from ArcMap, you will need to set up tool parameters, then use the appropriate gp command to insert them into the script:

import arcgisscripting

# create the geoprocessor object
gp = arcgisscripting.create(9.3)

gp.workspace = gp.getparameterastext(0)

# process
layer1 = gp.getparameterastext(1)
layer2 = gp.getparameterastext(2)
gp.PointDistance_analysis(layer1, layer2, "output.dbf", "1000 meters")

etc.

FYI, if you're going to use backslashes in a hard-coded path name, either designate it as a raw string (r"I:\PDtest") or use a double backslash ("I:\\PDtest"). Using a forwardslash ("I:/PDtest") is acceptable as well.

Re: new to python...

ChrisJ — Fri, 22 Mar 2013 17:20:21 GMT

bruce thanks very much for your dual explanation; I'll give this a try and see how it goes...

Re: new to python...

curtvprice — Sun, 24 Mar 2013 22:29:25 GMT

Chris, I recommend this *free* online course to get you started right:

'>Python for Everyone Using ArcGIS 10.1

Re: new to python...

ChrisJ — Mon, 25 Mar 2013 11:52:28 GMT

thanks very much cvp, will check this out....