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Pass Polygon coordinates to Survey123?

CMcDonald

I have created an ArcGIS Online map that allows you to click on a Feature Layer and the Pop Up allows you to link to Survey123

Is it possible to pass the coordinates/centroid of the polygon you have selected to pass into Survey123 Data tab so that it appears as geocoded at that location instead of the Atlantic Ocean?

Thanks 🙂

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alexis_s

I figured it out:

arcgis-survey123://?itemID=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX&field:parcelnumber_txt={MDLink}&field:ownername_txt={OwnerName}&field:mailingaddress_txt={OwnersMailingLabel}&field:propadd_txt={PropertyAddress}&center={expression/expr0},{expression/expr1}

there is no need for the ?

alexis_s

Any reason why this is not working? I am the using the latest and greatest Survey123 version and AGOL.

This is what I have for my popup in AGOL.

If it helps parcelshape_gs is the geopoint question where it should push too.

The expressions are the same as above. In the popup in AGOL it shows different lat/longs for each polygon, but it does not put over to Survey123.

Thoughts?

CMcDonald

Yes! That is behaving better now 🙂

How do I get the coordinates captured to appear on the Survey123 map?

The new record still plots in the Atlantic

Thanks

JoshuaSharp-Heward

Hi,

Try adding an & between the {SITE_NAME} and ?center, like you did between the different fields you're populating earlier in the url. Currently it's reading the site_name as "{SITE_NAME}?center"

CMcDonald

Thanks 🙂

I had some success using your solution. The 2 Arcade expressions seem to work OK, example is the first expression

I then appended my Pop-up URL with ?center={expression/expr0},{expression/expr1}

When opening in Survey123 the behavior is a bit odd as it seems to have appended an entry with ?center

I perhaps should have said that my pop already contains

?field:site_id={SITE_ID}&field:site_name={SITE_NAME}

appended to the URL so that the Site ID and Site Name pre-populates saving the person doing the survey entering it.

So the end of my URL looks like

?field:site_id={SITE_ID}&field:site_name={SITE_NAME}?center={expression/expr0},{expression/expr1}

The red dot on the map in Survey123 Data tab still shows in the Atlantic 😞

Thanks

JoshuaSharp-Heward

Disclaimer: sourced the calculations mainly from https://community.esri.com/thread/199141-arcade-expression-for-geometry-in-arcgis-online-popup

If you create two arcade expressions in the popup menu called lat and lon, using these arcade expressions:

<SPAN class="keyword token">var</SPAN> originShift <SPAN class="operator token">=</SPAN> <SPAN class="number token">2.0</SPAN> <SPAN class="operator token">*</SPAN> PI <SPAN class="operator token">*</SPAN> <SPAN class="number token">6378137.0</SPAN> <SPAN class="operator token">/</SPAN> <SPAN class="number token">2.0</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">var</SPAN> lat <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="token function">Centroid</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>Y <SPAN class="operator token">/</SPAN> originShift<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">180.0</SPAN><SPAN class="punctuation token">;</SPAN>
lat <SPAN class="operator token">=</SPAN> <SPAN class="number token">180.0</SPAN> <SPAN class="operator token">/</SPAN> PI <SPAN class="operator token">*</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="number token">2.0</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="token function">Atan</SPAN><SPAN class="punctuation token">(</SPAN> <SPAN class="token function">Exp</SPAN><SPAN class="punctuation token">(</SPAN>lat <SPAN class="operator token">*</SPAN> PI <SPAN class="operator token">/</SPAN> <SPAN class="number token">180.0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">-</SPAN> PI <SPAN class="operator token">/</SPAN> <SPAN class="number token">2.0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="keyword token">return</SPAN> lat<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

<SPAN class="keyword token">var</SPAN> originShift <SPAN class="operator token">=</SPAN> <SPAN class="number token">2.0</SPAN> <SPAN class="operator token">*</SPAN> PI <SPAN class="operator token">*</SPAN> <SPAN class="number token">6378137.0</SPAN> <SPAN class="operator token">/</SPAN> <SPAN class="number token">2.0</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">var</SPAN> lon <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="token function">Centroid</SPAN><SPAN class="punctuation token">(</SPAN>$feature<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>X <SPAN class="operator token">/</SPAN> originShift<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">180.0</SPAN>

<SPAN class="keyword token">return</SPAN> lon<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

And then at the end of the link to the survey in your popup add ?center={expression/expr0},{expression/expr1} where the first expression is the latitude and the second expression is the longitude. These expressions will calculate the long and lat in wgs84 (for using ?center= coords need to be in wgs84) of the polygon you click on in your webmap, and then pass them to a geopoint question, as described halfway through this page: https://community.esri.com/groups/survey123/blog/2019/02/06/survey123-tricks-of-the-trade-web-form-url-parameters

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