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I want to create center lines from road polygons. Is there any automated tools in Arcgis or any other GIS softwares.

I am attaching the Screenshot of my vector file also.enter image description here

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Thank you! The solution to convert to image then vectorize did have some snapping issues, but produced much better results than collapse dual lines (totally unaccepatable). Now to automate tackling the snapping. – user17436 Apr 22 at 23:22

4 Answers

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enter image description here

enter image description here

These two modeling available in ESRI software. After you can run 1st modeling we will do trim on lines model 2.

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Finally i got a solution. I converted the polygon to image in arcgis using Polygon to raster tool. Then reclassified it and used Automatic vectorization. About 90 percent accuracy is obtained using this method. There are only little snapping mismatches and also the line is drawn through the exact centre. I think this is the best way if you do not have a ET geowizards licence.

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up vote 2 down vote

Collapse Dual Lines To Centerline (Cartography)

This is a specific ArcGIS tool requiring ArcInfo License

ArcGIS for Desktop Basic: No
ArcGIS for Desktop Standard: No
ArcGIS for Desktop Advanced: Yes

Convert you polygons to lines first

"Derives centerlines from dual-line (or double-line) features, such as road casings, based on specified width tolerances."

enter image description here

http://resources.arcgis.com/en/help/main/10.1/index.html#//00700000000t000000

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Thanks for the information, I already tried center line from dual line feature in arcgis. But it didnt work correctly. Using Collapse dual line to single line dosent create line in the centre. Can u suggest any other method – Binoy Jul 20 '12 at 4:29
Finally i got a solution. I converted the polygon to image in arcgis using Polygo to raster tool. Then reclassified it and used Automatic vectorization. about 90 percent accuracy is obtained using this method. – Binoy Jul 20 '12 at 11:46
up vote 6 down vote

you can check out ET GeoTools for ArcGIS here. Beside this you can check out Feature To Line (Data Management) here but you have to some engaging in.

and check out this question Find tunnel 'center line'? here... skeletisation algorithms may can help you to develop your tool.

Input Dataset

et

Result

et1 et2

i hope it helps you...

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Thanks, this information helps me a lot. One more doubt, s it possible to convert the polygon to a raster image and then auto vectorize the image through center. Is this method a better one than the previous one, please give me suggestion. – Binoy Jul 19 '12 at 13:04

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