[postgis-users] Acessing M-Part of objects

Nicklas Avén nicklas.aven at jordogskog.no
Sat Feb 11 04:39:43 PST 2017

Hello Walter

If you just want do examine the m-values you can dump the points with
st_dumppoints and use st_m on the result.

If you want to filter rendering based on effective area you have to do
that client side. I have thought about a function doing such filtering
in PostGIS, but haven't done it, and I don't think any other function
can do that. 


Nicklas Avén

> how can i access the M-Part of an object other than Point? ST_M is
> only 
> for points but i'm working with linestrings and polygons.eRegards
> walter
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