Re: [mapserver-users] Rasters with transparency and resampling
Bump! The problem is that I often need to draw raster layers using tile indexes, and in 6.2 I get artifacts at each tile boundary. Rasters that have transparency at coast lines for water also have the same problem. Is there a way to avoid this and still use resampling? Thanks, Christy On 06/26/2013 08:39 AM, Christy Nieman wrote: Hi all, I've noticed that if I draw a TIFF that has some transparent pixels set either by using OFFSITE or alpha values in the TIFF palette, there are artifacts that appear around the transparent areas with MapServer 6.2, but not with 5.6, when I add the resample processing option to the layer. I assume there is something that has changed in MapServer that causes this to happen and I was wondering if someone could explain it to me. Thanks, Christy ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Rasters with transparency and resampling
Hi all, I've noticed that if I draw a TIFF that has some transparent pixels set either by using OFFSITE or alpha values in the TIFF palette, there are artifacts that appear around the transparent areas with MapServer 6.2, but not with 5.6, when I add the resample processing option to the layer. I assume there is something that has changed in MapServer that causes this to happen and I was wondering if someone could explain it to me. Thanks, Christy ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Rasters
Hi, I've converted some 8 bit rasters to GeoTIFF format and spherical mercator projection using FME. I'm getting large blue edges where the tiles meet: http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg In ArcGIS the tiles appear seamless. Is this because MapServer do not support the nodata tiff tag, as it is not officially part of the geotiff standard (http://www.awaresystems.be/imaging/tiff/tifftags/gdal_nodata.html). I do not believe there is a problem with the files we are writing, as other applications (e.g. ArcCatalog) pick up on the nodata value just fine. Another potential solution is to add an alpha band to the raster instead of a nodata value. Do you think MapServer will support this? Would using ecw images resolve the issue? Here is an excerpt of the MapServer file: # Web interface definition. Only the template parameter # is required to display a map. See MapServer documentation WEB IMAGEPATH C:/ms4w/tmp/ IMAGEURL C:/ms4w/tmp/ # WMS server settings METADATA 'wms_title' 'TESTMAPFILE' 'wms_onlineresource' 'http://193.120.94.23:8081//cgi-bin/mapserv.exe?map=C:/MS4W/apps/CacheMapConfig/raster.map' 'wms_srs' 'EPSG:900913' END END LAYER NAME test #DATA GEOTIFF_SM\O3036-C.tif STATUS ON TYPE RASTER DEBUG 1 MINSCALE 13500 MAXSCALE 55000 TILEINDEX ireland.shp TILEITEM LOCATION END Many thanks, Annette -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Rasters-tp6482500p6482500.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rasters
On 11-06-16 06:37 AM, afarrell wrote: Hi, I've converted some 8 bit rasters to GeoTIFF format and spherical mercator projection using FME. I'm getting large blue edges where the tiles meet: http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg In ArcGIS the tiles appear seamless. Is this because MapServer do not support the nodata tiff tag, as it is not officially part of the geotiff standard (http://www.awaresystems.be/imaging/tiff/tifftags/gdal_nodata.html). I do not believe there is a problem with the files we are writing, as other applications (e.g. ArcCatalog) pick up on the nodata value just fine. Annette, I would be interested in seeing a gdalinfo report on one of the GeoTIFF files produced with FME. The problem isn't that the tag is non-standard (after all it is a GDAL produced tag and MapServer uses GDAL as does FME and ArcGIS). The problem is just in the MapServer raster layer implementation and whether it honours the metadata. An immediate work around is to figure out what that blue pixel value is and set the OFFSITE keyword in your raster layer to match it. For instance if the blue were red=0, green=149, blue=189 you would add the following in the LAYER: OFFSITE 0 149 189 Ideally though, MapServer would pick it up automatically. Another potential solution is to add an alpha band to the raster instead of a nodata value. Do you think MapServer will support this? yes Would using ecw images resolve the issue? no, and it is often very difficult to keep track of nodata areas in lossily compressed formats like ecw, mrsid, jpeg2000 and jpeg. -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rasters
Frank, Does MapServer now use GDAL by default to read tiffs (instead of its own tiff handling), or do you need to specify a CONNECTIONTYPE? Or perhaps create a VRT file referencing the tiff to force the use of GDAL to read the tiff? Best Regards, Brent Fraser On 6/16/2011 8:12 AM, Frank Warmerdam wrote: On 11-06-16 06:37 AM, afarrell wrote: Hi, I've converted some 8 bit rasters to GeoTIFF format and spherical mercator projection using FME. I'm getting large blue edges where the tiles meet: http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg In ArcGIS the tiles appear seamless. Is this because MapServer do not support the nodata tiff tag, as it is not officially part of the geotiff standard (http://www.awaresystems.be/imaging/tiff/tifftags/gdal_nodata.html). I do not believe there is a problem with the files we are writing, as other applications (e.g. ArcCatalog) pick up on the nodata value just fine. Annette, I would be interested in seeing a gdalinfo report on one of the GeoTIFF files produced with FME. The problem isn't that the tag is non-standard (after all it is a GDAL produced tag and MapServer uses GDAL as does FME and ArcGIS). The problem is just in the MapServer raster layer implementation and whether it honours the metadata. An immediate work around is to figure out what that blue pixel value is and set the OFFSITE keyword in your raster layer to match it. For instance if the blue were red=0, green=149, blue=189 you would add the following in the LAYER: OFFSITE 0 149 189 Ideally though, MapServer would pick it up automatically. Another potential solution is to add an alpha band to the raster instead of a nodata value. Do you think MapServer will support this? yes Would using ecw images resolve the issue? no, and it is often very difficult to keep track of nodata areas in lossily compressed formats like ecw, mrsid, jpeg2000 and jpeg. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rasters
On 11-06-16 10:27 AM, Brent Fraser wrote: Frank, Does MapServer now use GDAL by default to read tiffs (instead of its own tiff handling), or do you need to specify a CONNECTIONTYPE? Or perhaps create a VRT file referencing the tiff to force the use of GDAL to read the tiff? Brent, MapServer now reads all raster layer input using GDAL. All the legacy mechanisms were removed in the last few years. Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rasters and WFS
WMS supports a GetFeature capability, to retrieve info from the server about the location clicked on the map, queried against a specified layer, which might work if you are determined not to have a WMS background WFS overlay. Note that if you open the WMS WFS layers in QGIS, save the project (session), you can just reopen the project to re-make both connections as a single operation. HTH Brent Wood --- On Fri, 5/20/11, SixDegrees paulcarli...@comcast.net wrote: From: SixDegrees paulcarli...@comcast.net Subject: [mapserver-users] Rasters and WFS To: mapserver-users@lists.osgeo.org Date: Friday, May 20, 2011, 7:36 AM I am very new to GIS software. We are developing an application that will use both QGis and/or a web browser as the front end. Basically, we have large image files we will be sending as a background layer, and we want to overlay them with points having various attributes. The user should be able to click on each of the points and read off that point's attributes. This works well if we load our background image through a WMS layer and load the points via a shapefile as a vector layer in QGis; points are displayed atop the image and are clickable, bringing up a table of attributes for the selected point. In QGis, at least, adding the shapefile to the WMS mapfile does not permit clicking on points in the UI. It is not possible for the user to obtain shapefiles locally, so we need a solution that will allow both sets of information to be sent through a web service. Will WFS allow raster images to be embedded? Documentation seems to indicate not, but isn't quite clear. We can insist that the user open both a WMS and WFS layer, but this gets messy; we would really prefer a single data stream solution. A browser-based solution seems feasible with WMS, based on the quick trip I've taken through MapServer tutorials. Our customers, however, are comfortable with QGis and strongly prefer that option as an interface. Any thoughts would be appreciated. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Rasters-and-WFS-tp6383431p6383431.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Rasters and WFS
I am very new to GIS software. We are developing an application that will use both QGis and/or a web browser as the front end. Basically, we have large image files we will be sending as a background layer, and we want to overlay them with points having various attributes. The user should be able to click on each of the points and read off that point's attributes. This works well if we load our background image through a WMS layer and load the points via a shapefile as a vector layer in QGis; points are displayed atop the image and are clickable, bringing up a table of attributes for the selected point. In QGis, at least, adding the shapefile to the WMS mapfile does not permit clicking on points in the UI. It is not possible for the user to obtain shapefiles locally, so we need a solution that will allow both sets of information to be sent through a web service. Will WFS allow raster images to be embedded? Documentation seems to indicate not, but isn't quite clear. We can insist that the user open both a WMS and WFS layer, but this gets messy; we would really prefer a single data stream solution. A browser-based solution seems feasible with WMS, based on the quick trip I've taken through MapServer tutorials. Our customers, however, are comfortable with QGis and strongly prefer that option as an interface. Any thoughts would be appreciated. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Rasters-and-WFS-tp6383431p6383431.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Rasters and WFS
On 11-05-19 03:36 PM, SixDegrees wrote: Will WFS allow raster images to be embedded? Documentation seems to indicate not, but isn't quite clear. Paul, MapServer WFS does not serve raster data. We can insist that the user open both a WMS and WFS layer, but this gets messy; we would really prefer a single data stream solution. I think you will need to insist though there may be ways of simplifying things with a qgis plugin or something. Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush| Geospatial Programmer for Rent ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
