topic Re: Another points to line question in Python Questions

Another points to line question

HayleyPotter — Wed, 18 Feb 2015 18:19:21 GMT

I am trying to convert points to lines, to then make them into polygons. I have tried the points to line tool but it continues to fail. I have attached the error message I keep receiving as well as my data set. I should note that the lat and long are from a total station so.. not truely lat and long.

Re: Another points to line question

DarrenWiens2 — Wed, 18 Feb 2015 18:24:39 GMT

It appears to be having trouble locating the python numpy library. This link has a suggestion for changing your PYTHONPATH.

Re: Another points to line question

DarrenWiens2 — Sat, 11 Dec 2021 22:53:33 GMT

If the above link does not solve your problem, this (admittedly simplified) script creates lines for each set of points, after converting your csv to a point feature class (here named, "csv_points").

>>> lines = []

... points = []
... redd = 1
... with arcpy.da.SearchCursor("csv_points",["SHAPE@","Redd"]) as cursor:
...    for row in cursor:
...        if row[1] != redd:
...            line = arcpy.Polyline(arcpy.Array(points))
...            lines.append(line)
...            points = []
...        points.append(row[0].centroid)
...        redd = row[1]
... arcpy.CopyFeatures_management(lines,r'in_memory\lines')

Re: Another points to line question

HayleyPotter — Wed, 18 Feb 2015 18:59:56 GMT

Darren

Thank you so much!! This worked!