Geographic Information Systems Asked by alecsx on January 16, 2021
I have two sets of points:
My goal is to do a calculation regarding driving distance, that will result in a table like follows:
Being somewhat familiar with NA, I did some reading as well and it seems that the OD matrix without using the line generator for better processing time, would be the best choice, but when trying it in Pro, I get some odd results.
So for the testing I have use 174 Origin points and 9 Destination points. Created the network dataset in ArcMap, loaded it into PRO and ran the OD matrix using the ND just created. For settings, I have not used any cutoffs and set destination number to 3. The results were odd, because even if I use as destination 3 or 9 or 7, I get 100 lines in total.
I am using Pro as main driver, but I have ArcMap background, so wont mind if someone can offer a solution in one or the other.
For the network data set I am using a dissolved version of the US Roads 2018 provided by TIGER.
Could somebody point me in the right direction on how to get this distances?
Bassically, for each “Origins” point I need the 3 closest “Destinations” points in driving distance.
So after multiple tries I found the issue that was causing this incorrect calculations. At a certain point when creating the network dataset you are being asked if you want to connect your lines at "end point" or at "any vertex". Instead of choosing "any vertex", I picked "end point" and my routing was done only through end points, instead of using any vertex connections.
Answered by alecsx on January 16, 2021
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