Latest Contributions by GerryGabrisch

Having suffered enough frustrations with 10 bugs and crashes, I decided to finally reinstall 9.3.1 throughout our department.  Since we have many mxds as 10 mxds I thought I could write a nice little script to convert them all to 9.3.1 mxds and get on with work using 9.3.1.  Unfortunately, I too, get the �??this map created in a later version of ArcGIS�?? message.  Too bad this function, like so much of 10, did nothing but waste my time. Maybe, if this method works sp2, and someone is still tired of 10, here is the code to convert all the v10 mxd to 9.3 mxds in a new directory. [HTML] #Convert all the v10 mxds in TheFolder, and any subdirectory in TheFolder, to #an earlier version of mxd to CopyToHere directory. try:      import arcpy, os, sys     TheFolder = r"Z:\GISpublic\GerryG\ATLAS\Copyof2010LummiAtlas"     CopyToHere = r"Z:\GISpublic\GerryG\ATLAS\Copyof2010LummiAtlas\93mxds\\"     for root, dirs, files in os.walk(TheFolder):         for file in files:             if file.endswith("mxd") or file.endswith("MXD"):                 print root                 print file                 mxd = arcpy.mapping.MapDocument(root + "\\"+ file)                 #Only make copies of mxd that have a dateSaved value (v10 only)                 if mxd.dateSaved:                     print mxd.dateSaved                     mxd.saveACopy(CopyToHere + file, "9.3")     print "Done!"     sys.exit() except:     print arcpy.GetMessages(2)     print ErrorDesc.message     print "Error"     sys.exit()[/HTML] ... View more

I am not sure if this is your problem but when you are finished with a cursor be sure to use something like del row, rows By not deleting the row and rows (or whatever you name them) you can get schema locks when you try to run another cursor on the same data. ... View more

Convert the path string to a list, and extract out the last items which is the feature class name. Something like this in Python... TheShapefile = "C:/Temp/myshapefile.shp" ThePathAsAList = TheShapefile.split("/") TheFileName = ThePathAsAList.pop() print TheFileName Then use TheFileName to reconstruct a new string that is the full path to the newly created data. ... View more

If they are points, just calculate xy values by calling the ArcToolbox tool, and populate the attribute table with lat/long.  Then use a search cursor to extract the lat long for each point. ... View more

Assuming the indentations are correct, you don't use the ! in the code itself, and you need == not =. See the link below. Good luck if (Shape_Area / 2000) - (math.trunc (Shape_Area / 2000) + 1) == 0: www.esri.com/news/arcuser/0507/files/pythonscript.pdf ... View more

There are tools in ArcGIS v10, or in Hawth�??s Tools, that will create a line from point data. Better would be to use any point, line or polygon dataset that have z values to create a TIN surface model directly with the tools available in the 3d Analyst extension. If you only have point data with z values, and only the spatial analyst extension,  you could use the interpolation tools. ... View more

Here you are concatenating an integer to a string.  This will throw an error. gp.Select_analysis(v8thd_gridCopy_shp, v8thd_gridCopy_Select_shp, "\"FID\" = " + counter ) Try using gp.Select_analysis(v8thd_gridCopy_shp, v8thd_gridCopy_Select_shp, "\"FID\" = " + str(counter) ) ... View more

Ah, RasterFieldName is not returning the name of the raster it returns the name of a field in a raster catalog.  See http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?id=1053&pid=980&topicname=Raster_Catalog_properties Try this import arcgisscripting gp = arcgisscripting.create() raster = r"C:\Temp\lidar" # Create a describe object desc = gp.Describe(raster) # Print the name of the raster print desc.Name Backslashes are special characters, for example print "Foo\nbar"  would print foo bar to the screen.  The r sets the string to a raw string so r"Foo\nbar" would print Foo\nbar ... View more

Python is backslash sensitive.  Try: raster = "C:\\data_all\\AltLatGrids\\ArcGISGrids\\alb8__22" or raster = r"C:\data_all\AltLatGrids\ArcGISGrids\alb8__22" ... View more

This might work.... Use the polygons to clip the lines. Keep only those lines inside the polygons. Convert the polygons to lines and merge the clipped line sections to this new file. Convert the merged lines back to polygons. ... View more

Have a look at Add xy coordinates found in ArcToolbox-Data Management Tools-Features. ... View more

Oh, maybe this script will help you as well. http://arcscripts.esri.com/details.asp?dbid=15569 ... View more

At the very least, the lines under your while statements need to be indented. ... View more

Maybe this Python script will help.  You could use it to calculate the volumes above your dem at graduated levels.  Then, check the volumes at each graduation to find the level that equals your input volume of water.  You now have the elevation that equals your input volume! http://arcscripts.esri.com/details.asp?dbid=14349 ... View more