topic Re: points to lines in ModelBuilder Questions

points to lines

Ahmad_Muhamad_Senousi_Ahmad — Wed, 06 Dec 2017 02:55:40 GMT

I want to connect a line between every two points which are away from each other by specific distances.
Are there tools do that?

Re: points to lines

DanPatterson_Retired — Wed, 06 Dec 2017 03:48:15 GMT

There is the obvious Points to Line tool which you can use if your current point spacing is to your liking

Re: points to lines

Ahmad_Muhamad_Senousi_Ahmad — Wed, 06 Dec 2017 04:43:44 GMT

Thank you for your reply.
I used this tool but the result is not desirable. I want to connect between points based on specific distance from each other.

Re: points to lines

DanPatterson_Retired — Wed, 06 Dec 2017 04:46:49 GMT

Then as long as you have a license above Basic

Simplify Line... using point remove... and specify a tolerance as well

Re: points to lines

Ahmad_Muhamad_Senousi_Ahmad — Wed, 06 Dec 2017 04:56:55 GMT

In all points, there is a pair of points that separate by a distance from each other. I need to connect lines between each pair of points.

Re: points to lines

DanPatterson_Retired — Wed, 06 Dec 2017 04:59:24 GMT

There is no built-in tool... provide a sample of your points and the required distance and something could be cobbled together using arcpy and/or numpy

Re: points to lines

Ahmad_Muhamad_Senousi_Ahmad — Wed, 06 Dec 2017 05:03:29 GMT

Re: points to lines

Ahmad_Muhamad_Senousi_Ahmad — Wed, 06 Dec 2017 05:05:06 GMT

Ok.
Thank you very much
Best regards,

Re: points to lines

DanPatterson_Retired — Wed, 06 Dec 2017 09:41:27 GMT

so is it 1.1 you want to change? I guess something is still missing from your description of the problem because if it is just that value, then you need to query for the distance, get the Origin-Destination pairs out from the query and make a line from the coordinates made in the Shape field

Re: points to lines

XanderBakker — Wed, 06 Dec 2017 13:56:29 GMT

I would probably start with Generate Near Table—Help | ArcGIS Desktop with a search distance to limit the results and then use some Python code to generate the lines between those point pairs found. Is that what you are looking for?

Re: points to lines

XanderBakker — Sun, 12 Dec 2021 09:32:01 GMT

In case it is, here is an example. I have these points:

Then you run the Generate Near Table tool using the same input as near features and setting a search distance (I used 500m) and select the Location option and uncheck the Find only closest feature:

The result is a table with the from and near locations:

Next you can run this script:

def main():
    import arcpy

    tbl = r'C:\GeoNet\NearLines\data.gdb\near_table'
    fc = r'C:\GeoNet\NearLines\data.gdb\lines'

    sr = arcpy.SpatialReference(3857)

    feats = []
    flds = ('FROM_X', 'FROM_Y', 'NEAR_X', 'NEAR_Y')
    with arcpy.da.SearchCursor(tbl, flds) as curs:
        for row in curs:
            polyline = arcpy.Polyline(arcpy.Array([arcpy.Point(row[0], row[1]),
                                                   arcpy.Point(row[2], row[3])]),
                                                   sr)
            feats.append(polyline)


    arcpy.CopyFeatures_management(feats, fc)


if __name__ == '__main__':
    main()‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

which will generate this lines:

Re: points to lines

Ahmad_Muhamad_Senousi_Ahmad — Fri, 08 Dec 2017 03:01:35 GMT

Thank you for your reply and I scenery appreciate your effort. I need to connect the point one time only to the point which is within a certain distance. For example, I want to connect a line between point # 3 and point #55 as shown in the attached image.

Re: points to lines

DanPatterson_Retired — Fri, 08 Dec 2017 03:24:43 GMT

We have been down this path before ... and I responded in an earlier post https://community.esri.com/message/734028-re-points-to-lines?commentID=734028#comment-734028

You need to specify the distances or distance range.

A simple query for the values that are within the range will give you those points.

From there you can construct origin destination pairs as outlined using similar procedures specified by xander_bakker‌

Once the data set is obtained, the remainder of the task will take little time.

Perhaps in your next screen grab, you can show a query result of the points that meet your conditions. It is hard to get a feel for how many points you have. If there were only a handful ... less than a 25 or so, it would be as quick to connect the dots manually in an edit session.