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I have a stream segment which is polyline feature. Now I want to draw a line which is perpendicular to stream segment at a interval of 30m. How can i do it using python ? Do you have idea on this .

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marked as duplicate by whuber May 17 '13 at 14:48

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If you are using GIS software can you let us know which product(s) so that we can phrase a suitable answer, please? Most GIS software will have their dynamic segmentation (sometimes known as linear referencing or chainage) capabilities documented. –  PolyGeo May 17 '13 at 10:18
    
I am using ArcMap10 –  Jaya Pudashine May 17 '13 at 10:49
    
The code in the accepted answer to this question may be of interest. –  JamesS May 17 '13 at 13:38
    
Possibly a useful solution:gis.stackexchange.com/a/50841/8104 –  Aaron May 17 '13 at 14:26
    
Isn't it possible without using other module. I need to use it in Arc Map 10. –  Jaya Pudashine May 17 '13 at 14:28
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If you have not done so yet read up on route hatching. Then you should be able to author a layer file with appropriate route hatching that you can use to add/update a layer using ArcPy.

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+1 For dusting off one of the more obscure tricks in the hat –  Aaron May 17 '13 at 13:27
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