I am trying to determine the public school properties that intersect with stream Resource Protection Areas (RPAs) in my county and the surface area of any intersections. I am using ArcGis Pro 2.8.2 Windows 10 version. I have two files, "Resource_Protection_Areas.shp" and "Tax_Administration_s_Real_Estate_-_Property_Owner_Addresses.shp" files that I got from the GIS data https://www.fairfaxcounty.gov/maps/open-geospatial-data
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I contacted ESRI support - what we did was add a Field and Calculate area to square feet (or I can use acres). When we did this, the results seemed more logical. They are not sure yet why the total area was showing such small numbers, because in the Project Options, square feet was specified, and showing, and the coordinate system checks were fine too.
Are you missing some screenshots? I don't see map numbers you're referring to.
When it comes to small shape area, you may likely have data in a geographic coordinate system such as WGS84, with shape_area being in square decimal degrees. I'd check the properties of your data and either put everything in the same projected coordinate system e.g. NAD83 something something.
or use a tool such as https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/calculate-geometry-attribute...
Hello David,
I was just told the data is projected in the coordinate system NAD 1983 Virginia North, which file Properties confirm. Angular unit per Properties for file are degrees. Extent in files shows as "dd." Units for the Project show as square feet.
And I only put up one screenshot as an example - like Map number 0262 18 0007 shows in the map but if I am interpreting the results in the table I get, it is 0.000001 and Map number 0262 02 0006 I get 0.000000 but the map clearly shows some overlap.
Shouldn't ARCGIS Pro show the units involved, and make it clearer to the user what one is seeing? And especially when the Units for the Project show as square feet?
No idea, still sounds like something is in a geographic coordinate system, but if you say the intersected shape is in NAD83 Virginia, then I guess its not.
Although for the final point I will say that the coordinate system and units of the project should never be relied upon when dealing with geometry attributes of data within the project.
Did you try https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/calculate-geometry-attribute...
Without screenshots of everything you're describing, including the coordinate system info of all the relevant datasets I struggle to get a feel for the issue, so can't really help any further sorry.
I contacted ESRI support - what we did was add a Field and Calculate area to square feet (or I can use acres). When we did this, the results seemed more logical. They are not sure yet why the total area was showing such small numbers, because in the Project Options, square feet was specified, and showing, and the coordinate system checks were fine too.