Batch Define projection with Python

[SofiaStouki]

Hi all,

I am fairly new to Python and I have been trying to make a script work-to assign a GC system to a number of shapefiles in a folder.(The GC system is currently Unknown so I cannot use the other tools in batch mode)

I am using Python 2.5 and Arc 9.3.1 but I keep getting errors
( for fc in fcS:
TypeError: 'geoprocessing list object' object is not iterable)

that don't really tip me off about what it s going wrong (newbie)

My code is:
import arcgisscripting
gp = arcgisscripting.create()

gp.workspace = "P:\Proj"
gp.toolbox = "management"
coordsys = "Coordinate Systems/Projected Coordinate Systems/National Grids/British National Grid.prj"
fcs = gp.ListFeatureClasses()
for fc in fcS:
    gp.defineprojection(fcS, coordsys)

I am certain there are a lot of errors there, but if anyone can assist with the iteration/listing of the shapefiles in the folder it would be great.

Thanks in advance for any suggestions.
S.

[JohnHauck]

Prior to 9.3 the ListFeatureClasses method returned an enumeration object. An enumeration requires that you call it's Next method to navigate through the values.

At 9.3 the ListFeatureClasses method returns a Python list that you will be able to use in a for loop as in your sample code.

I would suggest that you change the following line:

gp = arcgisscripting.create()

to

gp = arcgisscripting.create(9.3)


See the following help documents for additional details.

Comparing 93 and 92 geoprocessors

Differences between geoprocessor versions

[SofiaStouki]

Hi John,

thank you for your reply. After getting feedback from the forum users and going through some articles, I managed to get my script to work. I have posted the details at the Functions-Geoprocessing forum

( http://forums.arcgis.com/threads/13474-Batch-define-projection-with-Python )

Thanks again!
Regards,
S.