Hi Jeff, Thanks for your answer! I did try multiple PROCESSING directives like LOAD_FULL_RES_IMAGE and LOAD_WHOLE_IMAGE but the issue is still there unfortunately (unless I missed a important directive).
For the purpose of investigation, I've put the same mapfile with a different DATA pointing to a specific GRIB2 like you asked (mapfile available here: https://pastebin.com/AHnzpCz6). The GRIB2 file is available to download here: https://dd.weather.gc.ca/model_hrdps/continental/grib2/00/001/CMC_hrdps_continental_PTYPE_SFC_0_ps2.5km_2022022800_P001-00.grib2 I can see the issue on QGIS with the extent "-89.52, 33.63, -42.32, 56.52" and zooming 1 or 2 times after (to the "-74.71, 37.78, -51.16, 49.24" extent for example). Here is a visual example (GIF) with this GRIB2 file on those extents: https://pasteboard.co/hQr1ukpIczI5.gif Hope this new mapfile and GRIB2 file helps spotting the issue on your side. It seems this issue is there on all GRIB2 files following the " /CMC_hrdps_continental_PTYPE_SFC_0_ps2.5km_*.grib2/ " pattern (when zooming a lot, we see the green and orange changing constantly). Thanks a lot in advance for your help! Félix Laframboise -----Original Message----- From: MapServer-users <[email protected]> On Behalf Of Jeff McKenna Sent: Saturday, February 26, 2022 10:16 AM To: [email protected] Subject: Re: [mapserver-users] Issue - Style constantly changes using Mapserver 7.6 You can also play with the various PROCESSING directives for raster layers to see if that helps: https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmapserver.org%2Finput%2Fraster.html%23special-processing-directives&data=04%7C01%7Cfelix.laframboise%40ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7yXpR2OYBNaUOcaGSw8wuu1ZsxGbYQjHDBXOUG%2FWQwA%3D&reserved=0 (RESAMPLE, LOAD_FULL_RES_IMAGE, ...) -jeff On 2022-02-25 4:34 p.m., Jeff McKenna wrote: > Maybe my test does show it a little (the brown "rain-snow" area to the > left of my mouse, on top of the "rain" green area), as the resampling > happens as you zoom-in. > > -jeff > > > > > On 2022-02-25 4:19 p.m., Jeff McKenna wrote: >> Hi Felix, >> >> I have tested your case here locally on Windows with MS4W (this will >> be MS4W 5.0-beta3, that contains GDAL 3.4.1, MapServer 8.0dev, PROJ >> 8.2.1 etc). >> >> I have used one of those GRIB2 files ( >> https://dd.weather.gc.ca/model_hrdps/continental/grib2/00/001/CMC_hrd >> ps_continental_PTYPE_SFC_0_ps2.5km_2022022500_P001-00.grib2 >> ) and created a WMS service through MS4W, and then used QGIS 3.24 to >> add the WMS service, and zoomed-in 3 times : see the animated gif at >> https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpas >> teboard.co%2FN9LZcB9Nfgpc.gif&data=04%7C01%7Cfelix.laframboise%40 >> ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454 >> dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIj >> oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&a >> mp;sdata=lL0i5%2FShEe8AkSgKWbrrIaKZ7icSvrS1dhnLUpGr4AU%3D&reserve >> d=0 >> >> I don't see your issue. >> >> Could you pick one GRIB2 file (the one that is shown in the extents >> of your image) and change your mapfile to use that single data file >> (no >> patterns) and reproduce your issue? >> >> If yes, let us know here the exact filename that is shown in your >> image (and the exact extents to use). >> >> Have a nice weekend, >> >> -jeff >> >> >> >> >> > > -- Jeff McKenna GatewayGeo: Developers of MS4W, MapServer Consulting and Training co-founder of FOSS4G https://can01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgatewaygeo.com%2F&data=04%7C01%7Cfelix.laframboise%40ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=Jvr3stU159osxOxEPCIiEpcwyGVwMARRBmx6vbu0LPA%3D&reserved=0 _______________________________________________ MapServer-users mailing list [email protected] https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.osgeo.org%2Fmailman%2Flistinfo%2Fmapserver-users&data=04%7C01%7Cfelix.laframboise%40ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=eMIcGnu%2FFkS8vN70sfa7dgBVR99nrP%2BigJ4F9viCqZA%3D&reserved=0 _______________________________________________ MapServer-users mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/mapserver-users
