How to find the nearest line from a point

[Rahul]

hi All,

 

I want to find the nearest line/polyline feature with any point feature. The idea is that to update the attributes in point feature with the attibutes of line feature.

Any one have idea about this, please help asap.

 

Thanks

--
Rahul

GIS Developer

[Steve Smith]

I would test the nearest command to see if it gives you the desired result.

The process goes something like;
1) Build an empty table for the results (select * from LineTab where rowid = 0 into ResultTab NoSelect & save & open ResultTab)
2) NEAREST 30 FROM TABLE LineTab TO PointTab INTO ResultTab TYPE Spherical IGNORE MAX 150 UNITS"m"
DATA Col1=Col1Als,Col2=Col2Als,Col3=Col3Als

You can look at your result table in a map window to determine what is happening after the nearest command does its thing. Sorting your Result table by line length may also be useful.

If the nearest command does not work then try buffers of the points and lines partly within the buffers. I suspect it will be many times slower than the nearest command.


Regards

Steve Smith
Australian Bureau of Statistics (ABS)
Post: Locked Bag 10 Belconnen ACT 2616
Location: ABS House, 45 Benjamin Way, Belconnen ACT 2617
Geography / Spatial Data Management and Research
ABS Level 2 South 232 , Wk: (02) 6252-6824
wk email: steve...@abs.gov.au


Rahul ---02/07/2009 02:12:40 PM---hi All, I want to find the nearest line/polyline feature with any point feature. The

From:	Rahul <rahul...@gmail.com>
To:	mapi...@googlegroups.com
Date:	02/07/2009 02:12 PM
Subject:	[MI-L] How to find the nearest line from a point
Sent by:	mapi...@googlegroups.com

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Free publications and statistics available on www.abs.gov.au

 

[Bonwick, Vicky]

Rahul,

Try the Distance Calculator tool from the Tool Manager.  I had to do a similar thing once and it did the trick.

Vicky

 

Vicky Bonwick
GIS Administrator
Glenorchy City Council
Ph:  (03) 6216 6719
mailto:vbon...@gcc.tas.gov.au

---

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[Rahul]

Yes, NEAREST command is great, i fecthed the desired result by using this one.

Thanks much.

Regards,
Rahul Srivastava