Re: [mapserver-users] Issue - Style constantly changes using Mapserver 7.6

2022-02-28 Thread Laframboise,Felix (ECCC) 
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  On Behalf Of 
Jeff McKenna
Sent: Saturday, February 26, 2022 10:16 AM
To: mapserver-users@lists.osgeo.org
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-directivesdata=04%7C01%7Cfelix.laframboise%40ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000sdata=7yXpR2OYBNaUOcaGSw8wuu1ZsxGbYQjHDBXOUG%2FWQwA%3Dreserved=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.gifdata=04%7C01%7Cfelix.laframboise%40
>> ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454
>> dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIj
>> oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000
>> mp;sdata=lL0i5%2FShEe8AkSgKWbrrIaKZ7icSvrS1dhnLUpGr4AU%3Dreserve
>> 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%2Fdata=04%7C01%7Cfelix.laframboise%40ec.gc.ca%7C63bdf2fa2ad44f2d6dde08d9f93af1a8%7C740c5fd36e8b41769cc9454dbe4e62c4%7C0%7C0%7C637814854842707812%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000sdata=Jvr3stU159osxOxEPCIiEpcwyGVwMARRBmx6vbu0LPA%3Dreserved=0
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Re: [mapserver-users] Issue - Style constantly changes using Mapserver 7.6

2022-02-26 Thread Jeff McKenna 
You can also play with the various PROCESSING directives for raster 
layers to see if that helps: 
https://mapserver.org/input/raster.html#special-processing-directives 
(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_hrdps_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://pasteboard.co/N9LZcB9Nfgpc.gif


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
http://gatewaygeo.com/
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Re: [mapserver-users] Issue - Style constantly changes using Mapserver 7.6

2022-02-25 Thread Jeff McKenna 
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_hrdps_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://pasteboard.co/N9LZcB9Nfgpc.gif


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
http://gatewaygeo.com/
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Re: [mapserver-users] Issue - Style constantly changes using Mapserver 7.6

2022-02-25 Thread Jeff McKenna 

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_hrdps_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://pasteboard.co/N9LZcB9Nfgpc.gif


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
http://gatewaygeo.com/




On 2022-02-25 10:34 a.m., Laframboise,Felix (ECCC) wrote:

Hi,

I am currently using GDAL 3.1.3 and Mapserver 7.6.2 on a Ubuntu machine. 
I created a layer using a GRIB2 file as the source data.


When I tested the layer on QGIS 3.20, I noticed that it does not output 
correctly. When I’m zooming or moving the viewing extent to visualize 
the layer or data, the style constantly changes. I tested with WMS 
GetMap requests through a browser and the output issue is still there. 
See example GIF here: https://pasteboard.co/wAmyAUDyEeZs.gif 



I validated the different classes (CLASS) in the style used in the 
mapfile and everything seems to be in order. From what I understand, 
Mapserver seems to do some interpolation, but I can’t quite understand 
how it affects the output on that scale. I investigated and checked if 
the source file was the issue, but from what I see it doesn’t seem like 
it’s the case, as I tested with other data from another source file in 
NetCDF, and the issue is still there.


I created a test case to show you the issue here:

·Sample mapfile: https://pastebin.com/KC3UkR4m 



·GRIB2 Source file (available here: 
https://dd.weather.gc.ca/model_hrdps/continental/grib2/00/001/ 
) for 
the source data (using following patterns) : 
/CMC_hrdps_continental_PTYPE_SFC_0_ps2.5km_*.grib2/


Do you have an idea what could be the issue or how the interpolation 
works, and how to solve this issue?


Thanks a lot in advance for your answer(s)!

Félix Laframboise

Félix Laframboise, B.Sc.

Développeur géospatial / Geospatial developer

Systèmes de données géospatiales et ouvertes

Geospatial and Open Data Systems

Service Météorologique du Canada

Meteorological Service of Canada

Environnement et Changement Climatique Canada

Environment and Climate Change Canada

felix.laframbo...@ec.gc.ca 


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