topic Re: Spatial Join 2 Spatially Joined Feature Classes in Geoprocessing Questions

Spatial Join 2 Spatially Joined Feature Classes

Sue — Wed, 21 Jul 2021 15:05:56 GMT

Hi,

Relative newbie here. I have 2 spatially joined feature layers:

One based on census sub division (CSD) to recruitment territories (defined in-house based on a handful of cities in each recruitment territory). I called it CSD_RT_SJ.

The other is based on a bunch of new cities I geocoded and spatially joined to CSD (CSD_City_SJ).

I want ArcGIS desktop to spatially join CSD_RT_SJ & CSD_City_SJ and assign the recruitment territory to the additional cities based on CSD. I will then dissolve on territory for a map of cities bounded by recruitment territory. I would also like to export the data for a comprehensive list of cities and their territory for other data analysis.

I've tried a number of SJ combinations but they just result in a confusing mess of data with multiple X,Y & shape columns.

Any assistance the community can provide would be greatly appreciated.

Thanks, Sue

Re: Spatial Join 2 Spatially Joined Feature Classes

curtvprice — Wed, 21 Jul 2021 21:10:56 GMT

Are the CSD features polygons? The key thing here is to figure out what the output you want looks like - what are the unique rows? What fields or counts do you want? ArcMap or Pro?

If the CSDs are polygons, and the other data are points, it seems to me you have two spatial joins: 1) CSD to territories to make a list polygons with a territory tagged and 2) cities to territory polygons to tag each city with a territory ID. These are both of type ONE_TO_ONE if using the spatial join tool (I recommend this tool if you are using ArcMap over the menu workflow). Manipulating the field map to remove fields you don't want and set merge rules on the fields you do want is absolutely a good idea to avoid creating super wide tables that are hard to understand.

Hope this helps.

Re: Spatial Join 2 Spatially Joined Feature Classes

Sue — Thu, 22 Jul 2021 18:45:09 GMT

Hi @curtvprice and thanks for your help. I am using Pro.

I have 1) above but it is the CSD polygons that are tagged with territories e.g., the Bruce-Huron territory is comprised of 26 CSD's. I need to map my city XY data to the CSDs, then dissolve on Territory. City to CSD is a 1:1 relationship. When I SJ CSD tagged withTerritory to my city point data, it I am only getting my first city back and it isn't even the correct CSD.

Thanks, Sue

Re: Spatial Join 2 Spatially Joined Feature Classes

curtvprice — Thu, 22 Jul 2021 16:28:25 GMT

I believe you are doing the join in the wrong direction. If you want a list of cities tagged with the polygon (w territory), the source (first parameter) is cities and the join (second parameter) should be the CSDs tagged w territory. Then you get a point feature class of cities with territory and you can do anything else from there.

Re: Spatial Join 2 Spatially Joined Feature Classes

Sue — Thu, 22 Jul 2021 18:44:28 GMT

Hi @curtvprice

Ok, that worked. Thank you!

I have a point file of cities, territories and CSD but the SJ dropped all of the shape data. How do I get my CSD shape data so I can dissolve on Territory?

Re: Spatial Join 2 Spatially Joined Feature Classes

curtvprice — Thu, 22 Jul 2021 19:43:46 GMT

Now that you have all the join fields you can add an attribute join from CSD polygons to your points by CSD identifier and then run the dissolve by territory - this is a one to many match but you said all CSDs have only one territory so it won't matter which one you match to.

Again messing with the field map in the spatial join tool can make this work easier by deleting fields you don't need from the output.

Re: Spatial Join 2 Spatially Joined Feature Classes

Sue — Mon, 26 Jul 2021 12:20:06 GMT

Thanks @curtvprice this process did the trick!

Re: Spatial Join 2 Spatially Joined Feature Classes

Adnan_ZahoorAbbasi1 — Thu, 27 Jan 2022 05:34:51 GMT

I want to create a tool to Joinpoint and line feature without a new output (output feature class), for example, Tower and electric Line.

electric line is spitted on every tower. the relation is many to may.

The related feature can be within 0.8meter.

can some one share Code fir this process.

Anyone can help regarding this?.

Thanks & Regards,