2013-11-25 14:17:06 UTC
I'm working actually with Geoserver 2.4.1 (java 1.6.0_26/ native JAI and
JAI ImageIO installed)
I have a layergroup made by mixed vectors data types and raster data types.
I need to specifying buffer in my own,( buffer is different on each zoom
level because SLD contains sizes specified as feature attribute values,
in uom= "meter").
when I add a buffer parameter in my getmap option -for example buffer of
250 pix for a width/height image of 500 pix-
rasters data resolution are reduced by 2 in my image. the more the
ratio bufferLength/widthImageLength is high, the more the final
rendering of raster layer is low.
Is this a normal behavior?
I can imagine that for that kind of layer (raster data), buffer param
should be desactivated in any circumtances...
fig 1: width/heigt :current bounding box 512 pix with buffer not
specified (0), raster layer (grey shades) is ok
fig 2: width/heigt :current bounding box 512 pix with buffer=256 pix,
raster resolution is bad
fig 3: width/heigt :current bounding box 512 pix with buffer=2560 pix,
raster resolution is very bad