topic Re: Write statisticsField in Dissolve in ArcGIS Pro SDK Questions

Write statisticsField in Dissolve

DavidMrázek — Mon, 10 Jan 2022 09:43:16 GMT

Hello,

how to write statisticsFields in managment Dissolve correctly?

I tried it like this:

object[] sumArea = { "Shape_Area", "SUM" }; object[] sumLenght = { "Shape_Length", "SUM" }; object[] statisticsFields = { sumArea, sumLenght }; object[] listOfPara = { shpLayer, file, dissolveFields, statisticsFields, "MULTI_PART", "DISSOLVE_LINES" }; //second object[] statisticsFields = { "Shape_Area", "SUM" ,"Shape_Length", "SUM"} object[] listOfPara = { shpLayer, file, dissolveFields, statisticsFields, "MULTI_PART", "DISSOLVE_LINES" };

Both without success.

I will be happy for any advice.

Thank you in advance

David

Re: Write statisticsField in Dissolve

DanPatterson — Mon, 10 Jan 2022 13:14:25 GMT

You have this published in the ArcGIS Pro space, hence, use python

Dissolve (Data Management)—ArcGIS Pro | Documentation

If this is for the Pro SDK I will move it

Re: Write statisticsField in Dissolve

KenBuja — Mon, 10 Jan 2022 14:57:04 GMT

The documentation shows the statistic fields added like [[field, {statistic_type}],...], so try this:

object[] statisticsFields = { "Shape_Area", {"SUM"} ,"Shape_Length", {"SUM"}}

I used statistics fields in an ArcMap app, and while the documentation showed the same format, my code was able to use them by adding them like "Shape_Area Sum". You might want to give that syntax a try.

Re: Write statisticsField in Dissolve

GKmieliauskas — Mon, 10 Jan 2022 14:55:12 GMT

Hi,

I would recommend to execute the same tool from ArcGIS Pro Geoprocessing pane. Then copy python script and check, how parameters looks in python script. For .NET there is no better way to get geoprocessing function parameters. Using Geoprocessing.MakeValueArray try to get the same or similar.

Re: Write statisticsField in Dissolve

DavidMrázek — Tue, 11 Jan 2022 05:45:32 GMT

Hi,

yes I do exactly but I don't know how to rewrite it in c # but thank you for the advice

Re: Write statisticsField in Dissolve

DavidMrázek — Tue, 11 Jan 2022 05:48:09 GMT

That's what I did. But I don't know how to rewrite it in C#. Yes, it is for the ProSDK.

Re: Write statisticsField in Dissolve

DavidMrázek — Tue, 11 Jan 2022 05:50:32 GMT

Thank you for the advice, but it can't be rewritten like this.

Re: Write statisticsField in Dissolve

GKmieliauskas — Tue, 11 Jan 2022 06:29:42 GMT

Hi,

Have you tried like this:

string statisticsFields = "Shape_Length SUM;Shape_Area SUM"; var parameters = Geoprocessing.MakeValueArray(shpLayer, file, dissolveFields, statisticsFields, "MULTI_PART", "DISSOLVE_LINES"); var gpResult = Geoprocessing.ExecuteToolAsync("Dissolve_management", parameters, null, CancelableProgressor.None, GPExecuteToolFlags.None);

Re: Write statisticsField in Dissolve

DavidMrázek — Tue, 11 Jan 2022 07:58:47 GMT

Hi,

Yes that's it, thank you very much! It was enough to omit the comma and combine it into one text.