topic geoshape type in ArcGIS Survey123 Questions

geoshape type

JamesCrandall — Wed, 20 Mar 2019 20:54:06 GMT

Can the area value of a geoshape type be used in a calculation for another field?

We need to determine the area of any polygon created and set that value on another field.

Survey123 Connect v3.3.51

Re: geoshape type

BrettStokes — Wed, 20 Mar 2019 21:54:30 GMT

Hi James,

Sure can! You can use the area() function in a calculation field for another question. This example shows the area (in square metres) and perimeter (in metres) of a polygon being converted to hectares and kilometres and rounded to 2 decimal places.

Brett

Re: geoshape type

JamesCrandall — Wed, 20 Mar 2019 22:11:34 GMT

Score! Thanks so much for the example!

Re: geoshape type

Anonymous User — Wed, 03 Jul 2019 08:25:08 GMT

Hello Brett Stokes

I have multiple GPS points. Can I do manually type with Multiple GPS Points to create a polygon in geoshape? If we can create a polygon let me know how to create it

Re: geoshape type

BrettStokes — Wed, 03 Jul 2019 16:24:57 GMT

Hello Thant Zaw Oo,

You can achieve this by putting your geopoint questions within a repeat. Then just use the sum() function in your geoshape question in the calculate column to build the polygon from the points in your repeat. I suggest joining the Early Adopter Community (if you haven't already) where you can find more detailed explanations on this beta functionality. Here is an example of setting up your XLSForm:

Hope this helps,

Brett

Re: geoshape type

Anonymous User — Mon, 08 Jul 2019 07:20:55 GMT

Thanks Brett, I could manage it and get polygon well. May I know same questions that I would like to know Sq Meter from this polygon for calculation If you don't mind can you please share me. Thanks.

Re: geoshape type

MohammadTawbi — Thu, 17 Oct 2019 05:51:42 GMT

Hi Thant,

did u managed to calculate the SQM of the polygon so far

Thanks

Re: geoshape type

JamesTedrick — Mon, 21 Oct 2019 21:51:33 GMT

Hi Thant Zaw Oo‌, Mohammad,

The area() function provides the area in square meters; no conversion is necessary. Please refer to Geotrace and geoshape—Survey123 for ArcGIS | Documentation

Re: geoshape type

Zank_Benjamin_P — Thu, 02 Dec 2021 19:59:00 GMT

Hi James,

I have a geoshape within a repeat, I can easily return the area of the geoshape in square feet within another question in my survey with the area function if I add a single geoshape polygon using this calculation:

if(${dstrb_area},area(${dstrb_area})*10.7639, 0)

If I add two geoshapes in the repeat the calculation completes for the second of the two rather than for both.

How would I go about calculating the sum of two or more polygons collected in the geoshape repeat?

Thanks,