Latest Contributions by Jay_Gregory

‎06-23-2022

I'm curious what, if any, security mechanisms are implemented for feature layer attachments in ArcGIS Online, and if they're documented. Does AGOL perform security scans on attachments? Are only certain extensions allowed (though it is easy to change extensions of files)? If so which and where is that documented? If we are using distributed collaboration to replicate data (with attachments) from AGOL to Enterprise, how can we, or can we, be reasonably confident that attachments are not malicious, since significant effort and development would need to take place to intercept distributed collaboration data and perform security scans.

‎06-07-2022

Right - thanks for this. Generate Near Table and then some additional joins and simple math is doing the trick. I'm doing it with Python but could be done in Pro as well. I was just wondering if there was an Analysis tool that did the whole thing for you - seems like a common workflow. Thanks!

‎06-07-2022

Confused on how to do some specific spatial analysis. I have a point feature class where each feature contains a numerical attribute. I want to highlight all features that are within x miles of another one another AND the difference between any two attributes is less than y. How can this be accomplished in Pro? The result I'm looking for pairs of features who are within x miles and who's attributes are within y units of one another. Thoughts?

‎05-31-2022

So we're in a position where we have to break the federation between our hosting server and Portal (10.9), because we are changing the federation url of our ArcGIS Server (therefore changing the url of the services endpoints). So we will break the federation, then refederate using the new ArcGIS Server urls (for example changing from gis.domain.com/arcgis to gis.domain.com/server) I know this is not recommended or ideal but we're worked out with Esri tech support that is is necessary. I don't quite understand what the implications are of an unfederation and refederation. I know what it will break all Portal items that point to REST urls will break. But what else? Will any Portal items get deleted? Will any ArcGIS Server services (hosted servers or Server services) get deleted? On refederation will all services have associated items recreated in Portal, therefore duplicating those items, if the original items won't be deleted? Will original Portal items lose their connection to the associated services, such that deleing those Portal items will not also delete the associated services? Thanks!

‎05-03-2022

yes, everything is in the same projection - however I also do not have geopandas (and hence shapely) installed in the environment. Just the ArcGIS Python API. So possibly either shapely OR arcpy is required for intersections to work?

‎05-03-2022

Is there a centralized list of ArcGIS Python API functionality that will NOT work without also having access to Arcpy? It would be a great reference of understanding what is and is not possible without it.

‎05-02-2022

Once I signed out of all my ArcGIS Pro connections except my AGOL one it seemed to work. Strange.

‎05-02-2022

That's my issue - strangely I get errors when trying to add those urls to my map. And can't use Make Image Server Layer tool using them either. Don't understand what's happening.

‎05-02-2022

Here is my experience: I've found that this is the Terrain analysis layer I should be using. I am using Pro 2.9, and am signed in with my ArcGIS Online Organizational account. I am unable to add that layer to the contents of my map, either by REST url or by searching Living Atlas and adding the item. The error is "Failed to add data: https://elevation.arcgis.com/arcgis/services/WoldElevation/Terrain/ImageServer". Note even though there is a "REST" in the endpoint of the item, and that is what I try to add, the error in the url contains no REST. If I try to add the item as the Input raster in Extract Values to Points, it thinks for a while then just erases the input. If I try to add the item in the Input Image Service for Make Image Server Layer, I get the error "Failed to get raster. Please check if the input parameters is correct". Any advice here on how to move forward would be great. Thanks!

‎04-29-2022

@Robert_LeClair I am having trouble finding that layer. I have found https://www.arcgis.com/home/item.html?id=0383ba18906149e3bd2a0975a0afdb8e, which does not get added to the map when I try to, even though I'm logged into my AGOL account on Pro. I have a dataset with about 38k points. In fact, any elevation surface from Living Atlas I add to the Extract Values to Points GP tool Input Raster parameter in Pro just gets erased in 5 seconds and I'm unable to run the tool. Do I need special permissions or am I doing something incorrectly?

‎04-28-2022

If I download a DEM, I can use the Extract Values to Points to assign elevation values from that DEM to a point feature class. Is is possible to do the same thing using AGOL's World Elevation Service? Is there a geoprocessing tool in Pro that will consume an elevation service? In general how would I accomplish this using the World Elevation Service instead of having to download the DEM for my area of interest.

‎04-27-2022

I am using an conda environment with version 2.0.0 of the Python API installed, but not arcpy. This is running on a JupyterHub deployment. I am trying to do a spatial join of two SEDFs (point and polygons) by running the line: points.spatial.join(polygons[['SHAPE']], how="left", op="intersects") Unfortunately, get no positive intersections (the length of the output is the same as the points SEDF, and the index_right field is all NaN). If I run the exact same code on the same datasets in my ArcGIS Pro environment (arcpy is present) , using the same version of the Python API (2.0.0), I get a different result, the result I would expect (i.e. some points intersect the polygons). There is nothing in the API documentation saying the spatial join requires arcpy, so I am wondering if something else could be wrong with the JuypterHub environment, or is the documentation incorrect. Can anyone help verify?

‎04-21-2022

Very interesting - this is for general purpose feature layers it looks like. But I assume the same is available with Survey123.

‎04-21-2022

We are struggling with needing (expensive) Creator licenses for everyone that wants to fill out a survey (we are using ArcGIS Enterprise). We know the survey can be shared "publicly" such that anyone with the link can fill it out - this is the accepted workaround for acquiring Creator licenses, and could work. However, when data security is an issue, we would not also want anyone to be able to access the survey results. So while we might not expect any bad actors to want to fill out a survey and populate the results with bad data, we might expect them to find the REST endpoints and extract the results. Is this security model built into Survey123? Normally with feature services if you have permission to insert, you also have permissions to access, since it's just GET and POST requests. So I'm unclear if/how Survey123 deals with this.

‎04-15-2022

Okay, well works for you, doesn't work for myself or Jeff. I wonder what the differences between our environments are that might be causing this. I'm on arcpy 2.9 build py37_arcgispro_32704. Python 3.7.11 Windows 10. Conda env arcgispro-py3. I'm guess though it's probably not worth the effort to really figure out what's happening here and why it's working for some folks and not others.

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Date Last Visited	‎06-04-2026 01:35 PM

My Ideas

Latest Contributions by Jay_Gregory

Security considerations on feature layer attachments

Re: Spatial analysis how do find near features containing attributes within a specific threshold

Spatial analysis how do find near features containing attributes within a specific threshold

What exactly happens during Portal / Server unfederation and refederation?

Re: Does a GeoAccessor (SEDF) spatial join require arcpy?

List of functionality not possible without ArcPy

Re: Using AGOL World Elevation service to extract elevation values to points?

Re: Using AGOL World Elevation service to extract elevation values to points?

Re: Using AGOL World Elevation service to extract elevation values to points?

Re: Using AGOL World Elevation service to extract elevation values to points?

Using AGOL World Elevation service to extract elevation values to points?

Does a GeoAccessor (SEDF) spatial join require arcpy?

Re: Public Survey but restricted results?

Public Survey but restricted results?

Re: Multiprocessing won't create feature classes

Re: Limits with hourly Notebook scheduling and max...

Ability to specify bottom elevation for a volume

Offline installer for ArcGIS For Excel

Inbox query can be filtered based on group/categor...

Option to request permission (or join a group) for...