[GRASS-user] Help needed for ascii point export

[Moritz Lennert]

On 15/04/14 08:13, jctorres wrote:
> Hello
>
> You can create a map of these points contining the elevation as
> attribute. Once you output this map you could sort points using the
> elevation values.
>
> you can do this for instance using v.to.rast to convert the points to
> raster, them combine this map with elevation using r.mapcalc (assigning
> elevation to the points), and them output the map using r.out.xyz.
> To sort the points you can use any sort program or a spreadsheet.

Maybe directly using v.what.rast might be easier...

And, Thomas, have you checked the category values of the points ? If the 
points were created in stream order than the cat values should give the 
correct order.

Moritz

>
>
> Best regards
>
> Juan Carlos Torres
>
> El 15/04/14 04:52, Thomas Adams escribió:
>> All:
>>
>> I have a collection of points that represent the centerline of a
>> river. I need to output them in upstream to downstream order (or the
>> reverse). A simple v.out.ascii does not do this because of the channel
>> meanders. It's critical to get the x,y locations of these points in
>> the correct order.
>>
>> Any help is appreciated!
>>
>> Regards,
>> Tom
>>
>> --
>>
>>
>>
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>
>
> --
>
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