[Qgis-user] distance of point to line for large dataset

[Luis Miguel Royo Perez]

Hi Michael,

you can try Postgis. There is a function that fit the points into the 
closest geometry chosen, once you have this layer fitted, maybe you 
could try to calculate the distance between the points that have same 
ID, is not a direct solution, but maybe could help.

http://postgis.net/docs/ST_ClosestPoint.html

http://postgis.net/docs/ST_Distance.html

Cheers!

El 12/07/16 a las 12:28, Michael.Dodd escribió:
>
> I am trying to calculate the distance from points to vector lines.  
> There are various ways of doing this when there are relatively few 
> points and lines but my datset has 200,000 points and a large network 
> of vector lines and none of the tools I have tried in qgis seem to get 
> anywhere. I have also tried converting the lines to raster but not 
> clear what resolution to use and with high resolution the problem also 
> seems to be that it takes forever to do the calculation.  If the tools 
> gave an indication as to how long it is likely to take that would be a 
> help e.g. 12 hours but waiting 12 hours on the chance that somethign 
> might happen and still nothing is very frustrating.
>
>
>
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