[OSM-talk] NPE map WMS server projections

[Nick Whitelegg]

>This is probably one for Nick.

>The WMS server that runs on nick.dev.openstreetmap.org that serves up NPE 
maps 
>needs adjusting to as to reproject each individual tiles to match the 
grid 
>squares, and reproject/reorient the grid square corners to suit the WMS.

>This is obvious when you start looking at Cornwall or West Wales, where 
the OS 
>grid north is nowhere near true north, and the corners of the grid 
squares are 
>more than 50 metres out.

Can anyone suggest any guidelines as to how I would go about correcting 
this (as, I have to admit, I'm a bit unsure?) At the moment the WMS server 
just "glues together" the appropriate NPE tile images based on the 
bounding box, width and height. I guess, therefore, that this is an 
inherent problem in the accuracy of the NPE tiles.

Would it involve something like "twisting" the tile so the longitude of 
the top and bottom are equal?

Thanks,
Nick