[mapserver-users] 3D / 2.5D / Coordinates with Z and GEOMETRY Type in WFS

[Daniel Morissette]

On 2017-06-30 9:50 AM, Even Rouault wrote:
> 
> I'm wondering if we shouldn't revisit the decision to have USE_POINT_Z_M 
> disabled by default. This is often annoying.
> 
> Apparently, adding USE_POINT_Z_M defaulting to OFF was driven by 
> performance reasons per 
> https://github.com/mapserver/mapserver/issues/1244 . But this was 12 
> years ago. Perhaps with recent hardware the performance difference isn't 
> that big. The ticket unfortunately doesn't contain a test case to bench 
> (likely lots of lines/polygons, or large lines/polygons to render). If 
> the perf difference is still there, a more involved change would be 
> indeed to move the z and m components into separate arrays.
> 

#1244 refers to #1224 which is using the gmap demo mapfile... which is a 
relatively small dataset, so it should be easy to verify if the issue is 
still relevant on more recent hardware using gmap or probably any other 
dataset.

https://github.com/mapserver/mapserver-import/issues/1224


-- 
Daniel Morissette
Mapgears Inc
T: +1 418-696-5056 #201