[Geomoose-users] Geomoose feature pixellation

[Bob Basques]

Franz, 

There's more than on way for Mapserver to serve up raster content.  The old way was fairly pixelated but the performance was ver high because the images were much smaller, smaller color pallet, if you want nicer looking out I suggest you look at the AGG rendered output.  Be advised though that not all AGG (anti- alias with transparency) is handled by all browser versions.  But thew resulting images are very, very nice looking.  They also render a bit slower because of the larger numbers of colors required.  PNG files make the courser image color pallets much more desirable to use. 

This site: http://gis.ci.stpaul.mn.us/gis/gismo_public/html/ has a layer under the Geodetic & Control Points folder called Plat (Property) Lines that uses the AGG rendering.  The underlying files are a raster tile cache that the agg rendering resamples to make look very nice.  It's a rather dense Layer so you should zoom into the smaller part of the City first before turning the layer on. 

If AGG wasn't being used here, the line work would be very choppy and in some cases missing altogether, because the non-agg rendering would drop or add pixels depending on zoom levels. 

bobb 







>>> FRANZ OKYERE <franzzoa at hotmail.com> wrote:

Hi all, even after changing the image type in the map file to png or jpeg the lines drawn by geomoose are blocky, especially when the line thickness increase from 2px upwards. Has anyone a clue as to what causes this. I just can't ignore it. Thanks very much. Franz Okyere.

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