topic Re: UTM to DMS? in Python Questions

UTM to DMS?

DustinHolt — Thu, 25 Jul 2013 20:43:51 GMT

Does anyone have a script for field calculator to convert UTM in Degrees minutes second?

Re: UTM to DMS?

AnthonyGiles — Thu, 25 Jul 2013 21:37:21 GMT

Dustin,

Have you looked at the Convert Coordinate notation tool:

http://resources.arcgis.com/en/help/main/10.1/index.html#//0017000000tw000000

Regards

Anthony

Re: UTM to DMS?

RhettZufelt — Thu, 25 Jul 2013 21:46:03 GMT

not sure if you mean the Field Calculator or the calculateField tool.

if you want to do it within arcmap, you can just right-click on the column header, pick calculate geometry, and select what coordinate system you want the values calculated from.

R_

Re: UTM to DMS?

DustinHolt — Thu, 25 Jul 2013 22:07:27 GMT

I have used the Convert Coordinate notation tool, but it creates a new feature class and since this layer is going to be updated often it would be kind of a pain.

I'm looking for a script that I could use in the field calculator so the conversion would update in the attribute table.

Re: UTM to DMS?

RhettZufelt — Thu, 25 Jul 2013 22:44:51 GMT

Well, since you ignored the post about being within ArcMap, I'm going to have to assume that when you say Field Calculator, you actually mean the calculateField python tool meaning that you want to do the entire thing in code without having to open ArcMap.

One option would be to run the

ConvertCoordinateNotation_management (in_table, out_featureclass, x_field, y_field, input_coordinate_format, output_coordinate_format, {id_field}, {spatial_reference})

tool using your OID (or other unique field in your data) as the id_field (which is specifically included to allow for joins back to the original table). As you said, this would create a new FC, but could be saved in_memory to increase speed.

Then makeFeatureLayer on your original table so that you can do one of the following (won't work direclty on the FC):

Now, if you want to add these new coordinates to the existing table, use the joinfield tool to add the new columns to the original table.

Or, if you want to "update" some existing fields in the original FC, you would use addJoin to join the two together, then caclulateField and calculate the existing field(s) to the newly joined fields, then remove the join and you are done.

R_

Re: UTM to DMS?

DustinHolt — Thu, 25 Jul 2013 23:02:39 GMT

Thanks for the information. This is a new area for me and I may have not been asking the right questions, but is gives me a good place to start.

Re: UTM to DMS?

RhettZufelt — Thu, 25 Jul 2013 23:11:00 GMT

No worries. Didn't mean to sound snotty or anything. Wasn't sure if you were asking the correct questions, that is why I tried to clarify in my first post.

Seems to be the norm to not reply to post that don't seem to "apply", so, from that, I figured that you must be asking for code only solutions.

R_