Hi Pablo, Just to note I also ran into this issue so you are not alone! A WMS request from OpenLayers to MapServer would be fine, but modifying the size of the image (WIDTH and HEIGHT parameters) would result in a blank image and no errors in the logs.I never got a chance to debug further though. An error should ideally be reported somewhere rather than a blank, seemingly valid, image. Seth
-- web:http://geographika.co.uk twitter: @geographika On Wed, Jan 10, 2018, at 6:46 PM, Pablo Sanfilippo wrote: > Hi all, > > I admit this is the weirdest issue I have come across. This are the > relevant parts of my MapServer configuration:> > # A valid mapfile used for testing > MAP > NAME valid > STATUS ON > PROJECTION > "init=epsg:4326" > END > > IMAGECOLOR 0 0 0 > TRANSPARENT ON > > WEB > METADATA > "wms_srs" "EPSG:4326 EPSG:3857" > END > END > > LAYER > NAME "index" > STATUS ON > TYPE POLYGON > CONNECTIONTYPE POSTGIS > CONNECTION "host=x port=x dbname=x user=x password=x" > DATA "geometry from (select i.geometry, i.id, '/vsis3/' || > i.s3_bucket || '/' || i.s3_key as location from images_image) as > index using unique id"> CLASS > STYLE > OUTLINECOLOR 0 0 0 > WIDTH 1.0 > COLOR 200 200 200 > ANTIALIAS true > END > END > END > > LAYER > NAME "images" > STATUS ON > TILEINDEX "index" > TILEITEM "location" > TYPE RASTER > PROJECTION > AUTO > END > METADATA > "wms_title" "Images" > END > END > > > END > > The data in the PostGIS index is in EPSG:4326. The images referenced > by the index are GeoTIFFs georeferenced in EPSG:4326.> > A WMS request for the index layer shows the index polygons fine, > whatever the SRS and image size in the request.> A WMS request for the images > layer using SRS=EPSG:4326 shows the > images fine, whatever the image size.> A WMS request for the images layer > using SRS=EPSG:3857 will work fine > as long as the requested image size's x is greater than or equal to > the y. If not, it will return a blank (transparent) image. For > example, a 1300x1299 image will work fine, a 1300x1300 image won't > work and 1301x1300 won't work either.> > Any clues? > > Thanks! > _________________________________________________ > mapserver-users mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/mapserver-users
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