[gdal-dev] MVT Driver, Tiling Scheme NZTM

[Ian Reese]

I am creating a custom tiling scheme for NZTM, using the MVT driver, and
outputting to a directory.

ogr2ogr -progress -f MVT  wellyDEM_50mContour_nztm_simp
../wellyDEM_contour_50m_simp.shp -dsco MINZOOM=0 -dsco MAXZOOM=8 -dsco
COMPRESS=NO -dsco TILING_SCHEME=EPSG:2193,-1000000,10000000,2293760

In the render, there are no errors and the process completes just fine. If
I use the .pbf files in an NZTM map on Leaflet, everything seems to go fine
until I reach Zoom 8. The grid structure created for the .pbf files no
longer lines up with an NZTM map.  I suspect this is due to the fact that
NZTM does not have a structure where the resolutions half for each zoom
scale and at zoom 8, this is where this first happens.

NZTM Map Tile Resolutions
resolutions =
[8960.0,4480.0,2240.0,1120.0,560.0,280.0,140.0,70.0,28.0,14.0,7.0,2.8,1.4,0.7,0.28,0.14,0.07]

Is there any way I can use the resolutions also when building the tile
cache? If I could, do you think this would this solve the alignment issue?

Cheers,

Ian

-- 
Ian C Reese
https://xycarto.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20201019/eeecfe87/attachment.html>