Hi Dylan, Welcome back. Why do you think the issue is related to the use of overviews and not something else?
Rich On Fri, Jan 10, 2025 at 10:50 AM Dylan Beaudette via MapServer-users < mapserver-users@lists.osgeo.org> wrote: > Thanks Scott, > > I tried that: md5sums on the GeoTiffs and diff on the .map files confirms > that they are identical. > > The only difference between these two systems is the version of Mapserver. > > MapServer version 7.2.2 OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML SUPPORTS=PROJ > SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=SVG_SYMBOLS > SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER > SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT > SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS > SUPPORTS=GEOS SUPPORTS=PBF INPUT=JPEG INPUT=POSTGIS INPUT=OGR INPUT=GDAL > INPUT=SHAPEFILE > > MapServer version 7.6.4 OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML SUPPORTS=PROJ > SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=SVG_SYMBOLS > SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI SUPPORTS=WMS_SERVER > SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT > SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER SUPPORTS=FASTCGI SUPPORTS=THREADS > SUPPORTS=GEOS SUPPORTS=POINT_Z_M SUPPORTS=PBF INPUT=JPEG INPUT=POSTGIS > INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE > > The newer version is provided via apt: > cgi-mapserver 7.6.4-2build2 > amd64 CGI executable for MapServer > > Any other leads? > Thanks! > Dylan > > On Thu, Jan 9, 2025 at 2:45 PM Scott via MapServer-users < > mapserver-users@lists.osgeo.org> wrote: > >> I would do a sanity check first, just to make sure the 2 raster files >> are truly the same. Try something like: >> >> gdalinfo -stats -hist file1.tif >> gdalinfo -stats -hist file2.tif >> >> Then, I would continue with the .map files, to make sure they are the >> same. Something like: >> >> diff serv1.map serv2.map >> >> See what falls out. >> >> On 1/9/25 13:10, Dylan Beaudette via MapServer-users wrote: >> > >> > Hi Everyone, >> > >> > I've got identical GeoTiffs and .map files on two servers with varying >> > versions of Mapserver that is being used as a TMS. Mapserver 7.2.2 is >> (I >> > think) correctly using the overviews while Mapserver 7.6.4 is not. >> > >> > Here is an example of the same file, tile, and styling applied across >> > both versions of Mapserver. >> > >> > # Mapserver 7.2.2: >> > https://soilmap2-1.lawr.ucdavis.edu/cgi-bin/mapserv?map=/data1/website/ >> > ste/ >> > >> taxa.map&mode=tile&tilemode=gmap&tile=5+12+5&layer=blue9dylan&type=taxsubgrp&name=typic_xerofluvents&minvalue=5 >> < >> https://soilmap2-1.lawr.ucdavis.edu/cgi-bin/mapserv?map=/data1/website/ste/taxa.map&mode=tile&tilemode=gmap&tile=5+12+5&layer=blue9dylan&type=taxsubgrp&name=typic_xerofluvents&minvalue=5 >> > >> > >> > Mapserver 7.6.4: >> > https://soilmap4-1.lawr.ucdavis.edu/cgi-bin/mapserv?map=/data1/website/ >> > ste/ >> > >> taxa.map&mode=tile&tilemode=gmap&tile=5+12+5&layer=blue9dylan&type=taxsubgrp&name=typic_xerofluvents&minvalue=5 >> < >> https://soilmap4-1.lawr.ucdavis.edu/cgi-bin/mapserv?map=/data1/website/ste/taxa.map&mode=tile&tilemode=gmap&tile=5+12+5&layer=blue9dylan&type=taxsubgrp&name=typic_xerofluvents&minvalue=5 >> > >> > >> > It appears to me that the newer version is either ignoring or >> > interpreting the overviews differently. Each file has an internal >> tiling >> > and overview scheme like this: >> > >> > >> ---------------------------------------------------------------------------------- >> > Band 1 Block=1766x4 Type=Byte, ColorInterp=Gray >> > NoData Value=0 >> > Overviews: 883x1262, 442x631, 221x316, 111x158 >> > >> ---------------------------------------------------------------------------------- >> > >> > Does anyone have a clue about the differences? Is either version in >> error? >> > >> > Thanks, and good to be back on the mailing list after a nearly 15 year >> > hiatus! >> > Dylan >> > >> > >> > >> > >> > _______________________________________________ >> > MapServer-users mailing list >> > MapServer-users@lists.osgeo.org >> > https://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> _______________________________________________ >> MapServer-users mailing list >> MapServer-users@lists.osgeo.org >> https://lists.osgeo.org/mailman/listinfo/mapserver-users >> > _______________________________________________ > MapServer-users mailing list > MapServer-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users > -- Richard W. Greenwood www.greenwoodmap.com
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