Latest Contributions by RobertJones6

Another way you could try it would be like the following, since your code succeeds with manual field naming versus derived: rows = arcpy.UpdateCursor(outshp,"","",      ---> "%s" %(fname,) <-----    ,"") ... View more

Python does allow for <null> check in field calculator. Open field calculator, choose the Python Parser. Check the "Show Codeblock" box Enter the following in the "Pre-Logic Script Code:" box def Concatenate(field1,field2):   if field2 == "":     return field1   else:     return field1 + '-' + field2 in the bottom box enter (change the stuff between the !'s to your actual field names): Concatenate(str(!MyField1!), str(!MyField2!)) This works because the null values ( <null> ) are converted to empty strings before being sent to the custom "Concatenate" function build in the code block. More info can be found at this link Additional options: if both fields contain <null> values and/or you want to you want to retain said <null> values... this example code should help: Parser: Python PreLogic: def myFunction(one,two):   if one == "":   # check if first field is <null>     if two == "": # check if both fields are <null> and returns <null>       pass     else:       return two   # otherwise, just return the second field value   else:                # check if the first field is populated...     if two == "": # if second field is blank       return one  # return just the first field     else:             # if both fields are populated       return one + "-" + two  # return a concatenation of the fields with a hyphen deliminator Calculation box: myFunction(str(!field1!), str(!field2!)) ... View more

Nevermind, I was able to fix this problem using the 'Multipart to Singlepart' tool ... View more

assuming your coordinates are in meters already... The below should be a good start at getting the bounding corners for a 20m square ... # replace the x = and y = in your code with this... x = float(nestList[2]) #convert coordinates from string y = float(nestList[3]) #convert coordinates from string xMin = x - 10 # half of the size xMax = x + 10 # the other half of the size yMin = y - 10 yMax = y + 10 ... outFile.write('bottomLeft: ' + str(xMin) + ',' + str(yMin) + '\n') outFile.write('bottomRight: ' + str(xMax + ',' + str(yMin) + '\n') outFile.write('topRight: ' + str(xMax + ',' + str(yMax) + '\n') outFile.write('topLeft: ' + str(xMin + ',' + str(yMax) + '\n') I hope that helps ... View more

What exactly is your question? You mention making a 20m x 20m for each coordinate set, are the given coordinates the centerpoint or one of the corners. Do you need it to write to a polygon? If you give a bit more information and possibly a example of a couple lines from your 'inFile', I'll try to help. Rob Jones ... View more

Note - the best, most conistent way to get extent is if you are saving your map document in Layout View.  If your map document is in Data View, your extent may change based on the resizing of application windows. Same applies to getting and setting scale. Jeff Ah, but what I'm using it for is to get min and max coordinates for the display to dynamically query a MySQL database holding several GB worth of point data. Versus loading the whole thing into arc at once. It's a work around so I don't have to duplicate an already established database. Thanks for the advise though. ... View more

That worked wonderfully. Thank you much! ... View more