Latest Contributions by DanPatterson_Retired

Did you check out the pictoral image in this link down in the "Code Blocks" section? http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005s0000002m000000.htm It will visually give you an idea what needs to go where.  Also, there is no indentation in your example ensure that you are using proper indentation ( 2 or 4 spaces) in the def ... View more

to find out about sa functionality, simply get its help >>> from arcpy import sa >>> help(sa.ReclassByTable) ... View more

😄 best of luck... been playing with recarrays and I been having difficulty with spelling as of late ... View more

Chris can't help it ... are you sure that "forking.py" is spelled correctly 🙂 ... View more

Jason Doesn't help with differing path names. ... View more

Would this work?   import sys, os.path scriptName = sys.argv[0] pathName = os.path.dirname(scriptName) dllFile = "mydll.dll" locatedAt = (pathName + "/" + dllFile).replace("\\","/") print "script name", scriptName print "path to script", pathName print "dll location", locatedAt ... View more

Things changed in version 10, try: inTable = "C:/***/Bbuffers.shp" inField = "CITY_TOWN" rows = arcpy.SearchCursor(inTable) #row = rows.next for row in rows:   City = row.getValue(inField) #Error thrown here   #row = rows.next() see cursors  http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//002z0000001q000000.htm getValue etc.  http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//000v000000nv000000.htm ... View more

Float is common to most programming languages and programs.  It ensures that an operation that could result in an integer is cast to a floating point number.  Division is one of those cases, for example in Python, division returns an integer value unless one of the numbers involved is a floating point number, or one of them is cast to a float, ie >>> print 1/3 0 >>> print 1.0/3 0.333333333333 >>> print float(1)/3 0.333333333333 >>> Float is used in the spatial analyst for this very reason. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000008w000000.htm and there are other examples elsewhere. So the general rule of thumb is, cast numbers into floating point values by whatever means if you need it as output. ... View more

Why not convert the line to a grid then use sample, it can take a raster as input  (make sure that you use the same cell size and extent as the input raster) http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Sample/009z0000002v000000/ ... View more

All tools in Arctoolbox have the often-overlooked "Environments" tab, this is where you should be setting cell size, analysis extents etc etc. prior to clicking any OK button ... View more

You need to post the code within code blocks so it can be examined ... View more

Thanks for the info Chris, I was more interested in the event-based things, I can use non-Java-Net for form development...will have a serious look at this since it opens up a whole realm of new application possibilities. Regards Dan ... View more

Chris Are you suggesting that we can get some of the functionality of the old "Dialog Designer" days which harken back to AV3.x with add-ins?   Is this a Tkinter interface? Any more background docs? (haven't got beta 10.1 loaded yet so sorry if this is obvious) ... View more

have you tested the query through the standard select by attributes interface in ArcMap?  Have you tried it incrementally (ie add one piece, then the second etc)? ... View more

set it through your environments http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00210000001m000000.htm ... View more