Latest Contributions by ChrisSnyder

#1: You might find this thread interesting (same Jenn B?): http://forums.arcgis.com/threads/44464-Problems-with-cost-path-analysis-not-shortest-distance #2: You should be able to to run stats on your paths using the ZonalStatistics or ZonalStatisticsAsTable tools. Your path would be the zone, and you could calculate MAX or MEAN cost values (or some other stat) from your cost surface. ... View more

The most appropriate tool would be "ZonalStatisticsAsTable" tool in Spatial Analyst:http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z000000w8000000.htm Use the "MEAN" statistic. No need for looping, you can process the entire thiing in one step. ... View more

Thanks for the advice Eric. Question for you: How do I activate the Image Analysis Window? I've never even seen that, and I think I must be missing something. Is in an extension? If so I don't think we have that available. I did see the StackProfile tool in v10.1, which looks nice.... Unfortunatly most of my agency is bound to v10.0 for the near term. ... View more

Okay that's what I thought... bummer. Best thing I came up with is to clip out the viewframe extent and operate on that... the end user fellow loves the toolbar - specifically the profile graph. The intended use is to create a vertical profiles along a line in order to analyze ideal placment of yarding towers and tailholds (http://www.youtube.com/watch?v=lAoyK8UvHP8). ... View more

"Field calculator expresion might look like:".upper() arcpy.CalculateField_management(myFC,"NEW_FIELD","!OLD_FIELD![0] + !OLD_FIELD![len(!OLD_FIELD!)/2]","PYTHON_9.3","") ... View more

I asked, since the "best" way probably depends on what the rows contain (i.e is there Shape data?). However, if you are looking for a Python-based solution, I'm not sure how you would get away from using an insert cursor, which the cursor kinda being the "lowest level" operator available.  Of course the new .da cursors (in v10.1) are much faster than the "old" cursors, so if you are running v10.1, that'd be the 1st thing I'd try. If you were really handy, maybe you could use the new FGDB API, but that's above my head and I don't think there's a way to do it directly via Python. ... View more

What does your ArcSDESQLExecute query look like and what is it returning? A spatial view, table view? ... View more

Not sure what the issue is exactly, but why not just insert the original polygon objects into the new FC? I'm probably missing something, but I don't see the need to deconstruct them to their constituent points, and then recreate the polygons again. Why not just hand the polygons from the top search cursor directly to the insert cursor? Maybe this would help: http://forums.arcgis.com/threads/66434-A-better-way-to-run-large-Append-Merge-jobs ... View more

Shouldn't: arcpy.CalculateStatistics_management("demExtract"),"1","1","#","OVERWRITE") be arcpy.CalculateStatistics_management("demExtract","1","1","#","OVERWRITE") ? As long as your arcpy.env.workspace is set to where the raster "demExtract" lives, then it should work. I would refrain from naming files with camelCase and name it "dem_extract" instead. That said about arcpy.env.workspace, I usually provide the tools with a datset's full path instead of relying on the assumption that all my input datasets are coming from the same workspace, which they often do not. Per your question about a best practices, I am in the (bad) habit of using a harcoded '\\' as my path seperator, and it is much more correct to use os.path.join or os.path.sep to ensure that you are being OS-specific. I only use windows so '\\' works for me. However, if ArcGIS ever gets ported to UNIX or something, I'll be in a world of hurt updating my code... ... View more

I've never used ArcObjects via Python but you can: http://gis.stackexchange.com/questions/80/how-do-i-access-arcobjects-from-python ... View more

Woops - yes - correcting that now. ... View more

Unless its a shapefile, I don't believe there is currently a way to do this with arcpy in v10.1. A trick though to getting this to work is to make a seperate FGBD for each FC. This code might give you some ideas on how to get the size: import glob def compactAndReportFGDB(fgdbPath):     oldFgdbSize = 0     for file in glob.glob(fgdbPath + "\\*"):         oldFgdbSize = oldFgdbSize + os.path.getsize(file)     arcpy.Compact_management(fgdbPath)     newFgdbSize = 0     for file in glob.glob(fgdbPath + "\\*"):         newFgdbSize = newFgdbSize + os.path.getsize(file)     compactPct = str(int((oldFgdbSize - newFgdbSize) / float(oldFgdbSize) * 100))     return compactPct ... View more

I think it would look more like this: value = "CAT" rows = arcpy.UpdateCursor ("Property_Layer","LOCALITY = '' OR LOCALITY IS NULL") #blank string or Nulls for row in rows:    row.setValue("LOCALITY", value) #assuming this is a text field    rows.updateRow(row) del row, rows ... View more