Public Survey & Spatial Checks

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12-15-2021 09:22 AM
GeorgiosFloros
New Contributor II

Hello,

I am currently looking to introduce spatial checks on a public survey. My desired outcome is for the system to prevent the end user for placing a point outside an existing polygon. Knowing the limitations around custom JS functions, I was wondering if there are any ideas on how best to approach this?

Thank you

 

 

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3 Replies
jcarlson
MVP Honored Contributor

You could probably get this to work with a simple extent, but I don't know that it's possible to do this with a full-blown polygon.

Where's the data come from? Do you have access to Attribute Rules for this layer? A constraint rule would be perfect for this.

- Josh Carlson
Kendall County GIS
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GeorgiosFloros
New Contributor II

Hello Josh,

 

Thank you for your reply.

We have 2 data sources:

1: User input geopoint

2: Hosted feature layer in our AGOL (polygon) which we have complete control over.

Essentially I want to ensure that the end user places the geopoint within the polygon and not outside.

Does this make sense?

Thank you,

George

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jcarlson
MVP Honored Contributor

It makes sense, I just don't think it's possible in a public survey. As I was referring to, you could pull the lat/lon from the place point and use defined min/max values to at least constrain points to the rectangular extent of the polygon.

Beyond that, I think all you can do is put a warning in large text informing users that if they don't place points within the polygon, their input will be thrown out. Then create a view of the hosted layer with a spatial filter on it corresponding to the polygon.

Also! Make sure that the polygon boundary is visible in the survey map!

- Josh Carlson
Kendall County GIS
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