Capture in Survey123

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08-04-2020 08:16 PM
GarrettSmith1
New Contributor III

Hello

As I understand it, the new geotrace feature in Survey123 allows users to draw in lines or polygons on a map using their fingers. However, I am looking for solution that is similar to the capture in Collector, where users can walk around and collect GPS points to create a line or polygon. Is this possible in Survey123?

Also, is it possible to use this function when offline?

Thanks


Garrett

5 Replies
Philip-Wilson
Esri Frequent Contributor

Hi Garrett,

Yes, it is possible to use the device GPS to collect points that construct a line or polygon feature in Survey123. Please refer to Geotrace and geoshape—Survey123 for ArcGIS | Documentation and https://community.esri.com/groups/survey123/blog/2019/09/26/survey123-tricks-of-the-trade-lines-and-...  for more information. From the documentation, this is the important part:

The Vertex method allows more precise geometric capture of a line or shape by placing vertices that connect together. To begin capturing Vertex geometry, tap the Vertex button Vertex Geotrace Vertex Geoshape in the lower left of the map page and tap the map to place your first vertex. More vertices can be placed by tapping the map again or tapping the Capture Vertex at Location button Vertex from Location to place a vertex at your device's location. To move the map instead of placing vertices, tap the Pan and Zoom button Pan and Zoom to change map interactions to navigation mode.

Hope this helps.

Regards,

Phil.

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GarrettSmith1
New Contributor III

Hi Phil

Thanks so much for this response. I am still a bit confused, so maybe the project goals outlined below will help.

We are developing a Survey123 survey that volunteers will use to identify areas within a forest that are in a degraded state. Most, if not all, of these areas, are in areas without cell phone service so the data will be collected offline. One of the things that we are looking to collect, with this survey, is the footprint of the degraded site and/or the length of any linear disturbances. We are hoping that volunteers will be able to create polygons and/or polylines by walking the the perimeter of the site or by walking along the linear feature, utilizing their GPSs in their mobile devices. In the end we hope to compare these footprints and linear distances year over year to see if they are getting better or worse.  

I still do not see how the geotrace functionality will allow users to do this as it seems like they still have to hand draw on the map.

Please let me know if this makes sense.

Garrett

DougBrowning
MVP Frequent Contributor

Phil I think he is getting at this all falls apart when offline.  It has been a struggle for us as well.  Side loading does not work in many situations, esp what Garrett describes, and 123 has no way to create offline areas that I know of.

My idea is to allow 123 to be able to use anything Collector has taken offline.  The Collector team opened up the folder now in iOS so it should be possible.

Other idea is to allow 123 to take areas offline through some type of interface that can be used for all forms.

The new system with pre made offline areas is not very useful for use.  We have thousands of users over 11 states so knowing what areas they will need ahead of time is impossible.

thanks

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Philip-Wilson
Esri Frequent Contributor

Hi Garret,

I believe you are referring GPS streaming, where the user can start streaming and the polyline or polygon will be created based on their updated location as they move around without needing to interact with the map or select a button to add a point. This is not currently possible, however we have an enhancement in our backlog ENH-000125836 to address this in the future.

Regards,

Phil.

JimCuthbertson
New Contributor

Is there somewhere that had documentation of these buttons and how to work vetex or sketch methods in the field?   All the demos that I have seen are on-screen sketch demos.   I can't find any simple guide to how to use these features when collecting data.   Thank-you.

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