topic Re: Points by crossing lines in Data Management Questions

Points by crossing lines

TobiasSchwarz1 — Sat, 01 Dec 2012 20:05:34 GMT

Hi Guys,

i'm looking for some help in ArcGIS 10. I have a grid with many horizontal and vertical lines and want to auto-generate points at the crossing point of two lines.

Is it possible? I hope so 😉

thanks!

Re: Points by crossing lines

T__WayneWhitley — Sun, 02 Dec 2012 16:54:27 GMT

I was waiting for someone else answer this, but I'll go ahead with my suggestion--

I believe you can execute Intersect, a layer 'self-intersection', point output...however this may produce multi-point output, I'm not sure, but think for simple points, you can then either Dissolve or create points from XY event (Make XY Event) from coordinates (Add XY Coordinates). Before creating the event, run Frequency on both Point_X and Point_Y for single unique (X, Y) coordinate pairs....this will guarantee 1 point only at an intersection. Of course this can be done more efficiently from script, but in a pinch or one-time use, this approach works adequately.

Re: Points by crossing lines

TobiasSchwarz1 — Sun, 02 Dec 2012 19:05:05 GMT

Thanks for the answer. 🙂 I need it only one times. But I don't understand, which function I have to use for it. The intersection-functions don't work as I want

Re: Points by crossing lines

TobiasSchwarz1 — Sun, 02 Dec 2012 19:13:24 GMT

oh sorry! It works! Thanks a lot! 🙂

Re: Points by crossing lines

T__WayneWhitley — Sun, 02 Dec 2012 19:15:44 GMT

An execution of Intersect with the POINT output type should have given you multipoint output. Is this not giving you points at line intersections?

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00080000000p000000