search

stamen / terrain-classic

World-wide CartoCSS port of Stamen's classic terrain style
ISC License
144 stars 35 forks source link

Make sure MODIS landcover actually fades out at a high zoom #65

Open clhenrick opened 8 years ago

clhenrick commented 8 years ago

For reference, via Slack on 07/06/16 @mojodna said:

the fundamental problem appears that the pixels are too big (and however mapnik is doing the intersection w/ the TIFF is weird)
the difference you’re seeing between styles is a result of the `bufferSize` in `tessera.json`
it shows up at z16 when boosting it to 128
z17 at 256
and z18 at 512
...
keep in mind that the native resolution of the MODIS TIFF is slightly less than z9
which means that 1 source pixel == 1 entire tile at z17
that may be why you guys were thinking about fading it out before
so maybe it needs to be faded out more aggressively

Suggested solution by @almccon is to create separate .vrt files for each zoom from z0 - z9, (should be faded out by z10?) then set opacity on each of them.

mojodna commented 8 years ago

...if raster-opacity by zoom isn't working on the single layer.

almccon commented 8 years ago

Added the blur back, and I fade out more aggressively, so the pixelation doesn't look as bad IMHO.

screen shot 2016-07-07 at 7 jul 12 19 44 screen shot 2016-07-07 at 7 jul 12 21 34 screen shot 2016-07-07 at 7 jul 12 21 34

clhenrick commented 8 years ago

Looks much better @almccon