Accepted Solutions
With more thought, I think the best way to transfer this information is NOT to have the manholes give it to the lines, but for the lines to take the information from the manholes. Using some geoprocessing, I have been able to find out which cardinal direction a line flows. Therefore, if a line is categorized as "West" then I can infer that the manhole at the starting point is "east" of it, and I can take that manhole's "West" attribute and copy it to the line. The manhole at the end point is "west" of it, and I can take that manhole's "East" attribute and copy it to the line.
I knew that I had done some of this before.
This shows points at 45 degrees around existing points.
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First of all, thank you for taking the time to read my post. I am greatly impressed by your posts about points, and the submissions to Geonet and ArcGIS.com in general. Your work with geometry looks really cool, crisp, and clean. As I read those posts, though, I couldn't figure how they apply to my situation. I think a sample graphic would be good to include. I show here a screen shot from my manholes and sewer lines feature classes:
Remember that each manhole has four attributes it doesn't really need...attributes which really belong to the sewerlines north, south, east, and west of each one. It was created this way by a waste water professional who cleans the lines through the manholes. Here are some example attribute transfers.
Manhole #120 needs to transfer three of these attributes to the lines west, north, and east of it, even though the line north of it doesn't go directly north. The north attribute should not be transferred to the line between #175 and #034 since it doesn't share a vertex with #120.
The west, north, and east attributes of manhole #175 need to be transferred to the lines connected to it. However, the north line immediately bends west and should not get the west attribute. The fact that the line starts out north is what makes it a north pipe.
Lastly, manhole #035 has a line which is coming out of it to the southwest. If there is a non-NULL value in the west attribute, that should be transferred to the line. If there is a non-NULL value in the south attribute, that should be transferred to the line.
This is what I need a script to solve.
With more thought, I think the best way to transfer this information is NOT to have the manholes give it to the lines, but for the lines to take the information from the manholes. Using some geoprocessing, I have been able to find out which cardinal direction a line flows. Therefore, if a line is categorized as "West" then I can infer that the manhole at the starting point is "east" of it, and I can take that manhole's "West" attribute and copy it to the line. The manhole at the end point is "west" of it, and I can take that manhole's "East" attribute and copy it to the line.