Greetings everyone, I have 2 sets of point shapefiles in ArcGIS (group A and B), each set has around 1000 entries that contain lat/long. What I want to do is compare Group A against Group B and figure out for every point in Group A what point in Group B is the closest and what that distance is. What would be the easiest way to do this in arcgis?
You could run a Spatial Join between the two layers. In ArcMap TOC, right click the layer and select Joins and Relates>Join. On the top drop down select "Join data from another layer based on spatial location." Check the radio button that says, "Each point will be given all the attribute...etc". This will give you a distance value.
You can also use the Near tool.
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If you have ArcInfo make use of the Near tool to generate exactly what you're looking for. You can set it to only find the closest feature in Group B from Group A, and it will create a table containing the distances.