topic Re: Change field names from field Mapping zone in ArctoolBox in Python Questions

Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 15:02:44 GMT

Hi all

I create an arctoolbox using field mapping in the code. I was able to add my table to the field mapping object. I remember that in the merge tool, I can change the field names, formatting, etc. from the field mapping zone. I believe that there is code behind that. I tried but unfortunately I was not able. When I change for example my field name and click in other place, my changes are not kept and i got only my original field names.

I know that perhaps I have to use the FiledMap object. My problem is that I don't know how to link the manual changes I make in field mappings zone and a code that can take those changes and show them in the field mapping zone.

In reality, I don't know how to program this link?

Any help

Thanks

Message was edited by: Dan Patterson I shortened your title...there is no need to repeat the title multiple times to try and draw attention to it. I also added some tags so it won't languish in the questions section.

Re: How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?

SaidAkif — Tue, 13 Oct 2015 15:05:15 GMT

Please see the attached file

Re: How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?

WesMiller — Tue, 13 Oct 2015 15:15:58 GMT

What have you tried so far?

See if this link will help FieldMappings—Help | ArcGIS for Desktop

Re: How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?, How the change field names from field Mapping zone in a ArctoolBox?

SaidAkif — Tue, 13 Oct 2015 15:28:36 GMT

Thanks. I was looking in the FieldMapping help.

My problem is how from my manual changes in FieldMapping Zone, I can keep the changes. i mean, after right clicking on a field, make changes and see that those changes are kept (as what we can do with merge tool)

Here what I did in validation :

def updateParameters(self):

if self.params[1].altered:

self.params[3].value = None

tfms = arcpy.FieldMappings()

tfms.addTable(self.params[1].value)

self.params[3].value = tfms.exportToString()

return

Thanks

Re: Change field names from field Mapping zone in ArctoolBox

WesMiller — Tue, 13 Oct 2015 15:55:32 GMT

Did you look at example 2 in the link i gave you? It seems to do what you are asking.

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 16:06:18 GMT

Please My issue reside in :

Re: Change field names from field Mapping zone in ArctoolBox

RebeccaStrauch__GISP — Tue, 13 Oct 2015 16:17:50 GMT

Said, are you trying to change the OBJECTID field itself? That is an internal/reserved field and I don't think you can change it. I would copy the value of the OBJECTID field to a new field and manipulate that. My opologies if that is not what you are doing, but the graphic shows it.

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 16:23:28 GMT

Whatever change I made with Output Field Properties (right click) on whatever non reserved field, It does not work. All my changes disappear

Thanks

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 16:47:37 GMT

I want just do what is possible in Merge tool. In the FieldMapping Zone, We can rename fields, change their format length, type. And after those changes are preserved in the interface before running the tool.

Any Help please

Thanks

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 19:01:37 GMT

When I right click on a field in the Field Mapping zone, I notice that there is a difference and perhaps it is the source of my problem. please take a look to the following:

Re: Change field names from field Mapping zone in ArctoolBox

DanPatterson_Retired — Tue, 13 Oct 2015 19:10:28 GMT

could you hightlight the same field in your examples

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 19:17:05 GMT

Re: Change field names from field Mapping zone in ArctoolBox

DanPatterson_Retired — Tue, 13 Oct 2015 19:31:29 GMT

Did you go through this link on mapping fields? Which has a link to the field mapping control ... which has another link referring you back to field mapping So if it is available and does it the way you want, you will find it there. If not...then it can't be. Good luck

Re: Change field names from field Mapping zone in ArctoolBox

SaidAkif — Tue, 13 Oct 2015 19:44:39 GMT

I tried all this. Unfortunately

Thanks

Re: Change field names from field Mapping zone in ArctoolBox

DanPatterson_Retired — Tue, 13 Oct 2015 19:49:01 GMT

So... no luck then.