Latest Contributions by DarrenWiens2

Here is approximately how you can do this in numpy (need to do some other tedious stuff to position final raster correctly): >>> import numpy   ... reclass_map = [[10,999],[20,1000]] # reclass list: [[old1,new1],[old2,new2],...] ... arr = arcpy.RasterToNumPyArray('idw.tif',nodata_to_value=0) # raster to  numpy ... for i in reclass_map: # loop through class list ...    temp = numpy.less(arr,i[0]) # if less than value ...    numpy.putmask(arr,temp,i[1]) # set to new value ... new_ras = arcpy.NumPyArrayToRaster(arr) # flip back to raster ... View more

Have you considered flipping to Numpy, reclassifying, and then back again? RasterToNumPyArray—ArcPy Functions | ArcGIS for Desktop NumPyArrayToRaster—ArcPy Functions | ArcGIS for Desktop edit: I assume you've considered and passed on using the Reclassify geoprocessing tool. ... View more

Try building your SQL expression in a previous line, then printing it to confirm that it is what you think it is. ... View more

Is there an error, or what is the problem? What version of ArcGIS are you on? ... View more

Not sure about the rest, but you don't have the same number of single and double quotes. ... View more

No, the label expression dialog does it differently than the field calculator (convenient... ). !Name!.title() results in an error. ... View more

Okay, if an ESRI employee is going to promote a QGIS answer then so will I. The QGIS equivalent to ArcGIS fishnet is Create > Create Grid Layer within the MMQGIS plugin. It's a pretty cool tool that can also make a hexagon grid for you. ... View more

If I understand correctly, you have an irregularly shaped polygon (i.e. not necessarily a rectangle or circle) and want to constrain it to an exact size. The short answer is: no, there is no such tool to do this, that I know about. However, you may be able to script it, although it would be somewhat complicated. Given the vertex and a bearing to move it on, you could automate moving a single vertex and testing the resulting area, through trial and error (although, even then, you may not be able to do exactly what you want - think of an S-shaped polygon). ... View more

You should ask this question on a more general GIS forum, like: Geographic Information Systems Stack Exchange ...as this forum is specifically for ESRI ArcGIS software (similar, but different to QGIS) users. ... View more

You can make a Python add-in Application Extension that fires every time ArcMap is open (via the startup(self) function), verifies whether it's one of the desired mxds, and applies your symbology from a layer file (as Wes mentions): Extension class—Help | ArcGIS for Desktop ... View more

Just FYI, this style works for me: >>> where_clause = """{0} = {1}""".format(arcpy.AddFieldDelimiters(featureClass,'FID'),int(10)) ... arcpy.SelectLayerByAttribute_management(newLayer,"NEW_SELECTION",where_clause) ... View more

I believe you should use: AddFieldDelimiters—ArcPy Functions | ArcGIS for Desktop ...which will place the correct quotes around the field, given the feature class name (and figuring the datasource type on its own). ... View more