Latest Contributions by MathewCoyle

‎03-04-2014

Can you post the full error you are receiving so we can see what has been passed that causes the error? It should look something like this. Executing: CalculateField blocks TEST_LABEL "!SOURCEID![: !TEXT_INTS! ]" PYTHON_9.3 # Start Time: Tue Mar 04 12:48:53 2014 ERROR 000539: Error running expression: u"FA07908426251"[: u"2014" ] Traceback (most recent call last): File "<expression>", line 1, in <module> TypeError: slice indices must be integers or None or have an __index__ method Failed to execute (CalculateField). Failed at Tue Mar 04 12:48:53 2014 (Elapsed Time: 0.04 seconds) You can find it under the 'Results' tab

‎03-04-2014

As an aside, I find it much easier to use a dictionary in these cases. reclass_dict = {'bus': 338, 'light rail': 281, 'metro': 335, 'rail': 282, 'commuter bus': 336, } def Reclass(inputTansitType): inputTansitType = inputTansitType.lower().strip() try: return reclass_dict[inputTansitType] except: return 0

‎03-04-2014

Is that your entire expression? Can you take a screenshot of your field calculator window with the code you execute that returns that error? Also can you post the entire error message? And what version of ArcGIS are you using? Something isn't adding up here.

‎03-04-2014

If neither of the posted samples worked for you something odd is going on with your data or how you are executing the calculator. Are you sure you are enabling Python instead of VB? What errors or messages do you get?

‎03-04-2014

But surely the Arc way to do it ... Yes, you are right Neil. I had forgotten about the projectAs method on geometry objects. I haven't done much testing with it and am not sure about how efficient it is, but I imagine that it would garner the same results the OP is after. At that point the only advantage to mine is that it does not require an arc license.

‎03-03-2014

Are you trying to calculate a field or create a label?

‎03-03-2014

Could you post a sample of your table you are trying to calculate and the applicable field types?

‎03-03-2014

If using field calculator try this. !TEXTSTRING![:int(!position!)] int() may or may not be required depending on field type of "position"

‎03-03-2014

You don't need to make any edits to the makeaddin.py at all. Usually you only get that error if it is being run through an interpreter. Do you have some strange file associations with .py files by any chance?

‎03-03-2014

I don't believe anything is built in that has the functionality. You can pass geometry objects and use project to change coordinate systems. Otherwise it is a fairly simple and well known formula. I have a function that works, but I am not sure where it came from. def geographic_to_web_mercator(x_lon, y_lat): if abs(x_lon) <= 180 and abs(y_lat) < 90: num = x_lon * 0.017453292519943295 x = 6378137.0 * num a = y_lat * 0.017453292519943295 x_mercator = x y_mercator = 3189068.5 * math.log((1.0 + math.sin(a)) / (1.0 - math.sin(a))) return x_mercator, y_mercator else: print('Invalid coordinate values for conversion')

‎03-03-2014

You can access dict values directly as a variable of sorts using the key value, or you can assign them to independent variables. var1 = dict["key1"] var2 = dict["key2"]

‎03-03-2014

So you have a field with multiple values you want to parse into individual values? Could you give us an example of some values that field may contain? Are they space, comma, something separated values? Are they geometry objects? Or something else? Also you are using a rather odd method of accessing your row values. Is there a particular reason that you need to use the field names vs the field index to access the values?

‎02-27-2014

What error are you getting? Try reading through this if you are having issues. http://docs.python.org/2/faq/windows

‎02-27-2014

There were many things that changed with Python between 10.0 and 10.1. That shouldn't stop you from importing the model though. Can you post your toolbox and model?

‎02-26-2014

Your pythonpath system variable is most likely set to your Python 3 version. Try following the steps in the following link, depending on how you want to resolve this. https://stackoverflow.com/questions/7472436/add-a-directory-to-python-sys-path-so-that-its-included-each-time-i-use-python I would recommend uninstalling and reinstalling your entire ArcGIS and Python installations.

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Latest Contributions by MathewCoyle

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