topic Re: How to combine the polygon with same attribute in Data Management Questions

How to combine the polygon with same attribute

MRC — Thu, 18 Jul 2019 09:40:36 GMT

Hello everyone, I have a shp with includes the table with field QUY_HOACH, The table data included:

CCC- ĐẤT CÓ MỤC ĐÍCH CÔNG CỘNG

ODT- ĐẤT Ở TẠI ĐÔ THỊ

.....

then I want to combine objects close together and the same attributes together

For example, if the data is ccc then all the data that is ccc close together will automatically merge together...

Initial results

And the result

Because there are so many polygons, I can't do it manually, hopefully everyone could help me which tool can automatically do this job.

i have attached the data here for your references...

sorry for my bad english.

Thanks everyone

Re: How to combine the polygon with same attribute

DanPatterson_Retired — Thu, 18 Jul 2019 11:30:52 GMT

Dissolve on your attribute field looks like it might work

Dissolve—Data Management toolbox | ArcGIS Desktop

You might have to follow that up with a

Multipart To Singlepart—Data Management toolbox | ArcGIS Desktop

if some of the polygons were a combination of adjacent and non-adjacent polygons prior to the dissolve

Re: How to combine the polygon with same attribute

Egge-Jan_Pollé — Thu, 18 Jul 2019 11:40:39 GMT

Hi Havan Cong‌,

I have had a quick look at your data (see screen captures below).

You could use the following tools to accomplish what you want:

Dissolve - Aggregates features based on specified attributes.
Multipart To Singlepart - Creates a feature class containing singlepart features generated by separating multipart input features.

The first step will combine all features base on the content of the field QUY_HOACH and will reduce the number of records from 1,126 to only 11. In the second step you split these 11 multipart objects into 852 singlepart features.

Does this solve your issue?

Best regards,

Egge-Jan

Re: How to combine the polygon with same attribute

MRC — Fri, 19 Jul 2019 01:24:53 GMT

Thank you very much Dan Patterson

it's work for me...

Re: How to combine the polygon with same attribute

MRC — Fri, 19 Jul 2019 01:36:45 GMT

Thank for your advice Egge-Jan Pollé, i will follow for your suggestion!

I am very thankful that you are considering my problem

Re: How to combine the polygon with same attribute

MRC — Fri, 19 Jul 2019 03:25:29 GMT

Could you explain for me these parameters? thanks

Re: How to combine the polygon with same attribute

DanPatterson_Retired — Fri, 19 Jul 2019 14:44:37 GMT

create multipart features should be unchecked since it would defeat the purpose of using the Multipart to singlepart tool.

If you plan to do any 'counts' of your data and have multipart features you will get wrong answers.

If a property owner has 5 properties but they are dissolved by attribute on owner, a count of how many properties the individual has would yield "1"... yes 1 multipart feature rather than 5 properties.

Similarly with unsplit lines, although it can be useful, it can also have its own issues.

In short, don't leave them checked until you have read the implications from the help files.

Re: How to combine the polygon with same attribute

MRC — Tue, 23 Jul 2019 08:09:32 GMT

Thank you very much

Re: How to combine the polygon with same attribute

DanPatterson_Retired — Tue, 23 Jul 2019 08:48:09 GMT

Your question remains open. Was it answered?