[QGIS-Developer] Problems opening .grib data in QGIS 3.4

[Peter Petrik]

Hi,

create an issue https://github.com/lutraconsulting/MDAL/issues/43

You can also try links in the blog post
https://www.lutraconsulting.co.uk/blog/2018/10/18/mdal/
e.g. Here
<https://www.unidata.ucar.edu/software/netcdf/examples/ECMWF_ERA-40_subset.nc>

Cheers,
Peter

On Thu, Nov 8, 2018 at 7:09 AM Saber Razmjooei <
saber.razmjooei at lutraconsulting.co.uk> wrote:

> Hi Tim,
>
> I tried your dataset and got the same error in QGIS. Then when I tried to
> download the netcdf version (which sometimes works better with mesh in
> QGIS):
>
> #!/usr/local/bin/python
> import cdsapi
> c = cdsapi.Client()
> c.retrieve(
>     "reanalysis-era5-complete",
> {
>     "class": "ea",
>     "dataset": "era5",
>     "date": "2018-08-01",
>     "domain": "g",
>     "expver": "1",
>     "number": "0/1/2/3/4/5/6/7/8/9",
>     "param": "238.140",
>     "step": "0",
>     "stream": "ewda",
>     "time": "06:00:00/18:00:00",
>     "type": "fc",
>     "format": "netcdf",
>     "target": "output.nc",
> }, "global-waves-2018-08-01-0600-1800.nc")
>
>
> I got he following error:
> First GRIB is not on a regular lat/lon grid or on a regular Gaussian
> grid. Exiting
>
> For your example, you can use probably one of these datasets (I have tried
> aerosols and they seem to open fine in QGIS):
> https://atmosphere.copernicus.eu/catalogue#/
>
> Let me know if you have any problems.
>
> Cheers
> Saber
>
>
> On Thu, 8 Nov 2018 at 05:06, Tim Sutton <tim at kartoza.com> wrote:
>
>> Hi All./ Martin
>>
>>
>> I’m trying to get some mesh data for a presentation to a bunch of climate
>> geeks later today. I tried grabbing a sample dataset from ECMWF/Copernicus
>> like this:
>>
>> #!/usr/local/bin/python
>> import cdsapi
>> c = cdsapi.Client()
>> c.retrieve(
>>     "reanalysis-era5-complete",
>> {
>>     "class": "ea",
>>     "dataset": "era5",
>>     "date": "2018-08-01",
>>     "domain": "g",
>>     "expver": "1",
>>     "number": "0/1/2/3/4/5/6/7/8/9",
>>     "param": "238.140",
>>     "step": "0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18",
>>     "stream": "ewda",
>>     "time": "06:00:00/18:00:00",
>>     "type": "fc",
>>     "target": "output",
>> }, "global-waves-2018-08-01-0600-1800.grib")
>>
>> ~
>>
>>
>>
>> When trying to add it as a mesh in Data Source Manager it gives a ‘file
>> not supported’ error. So two questions:
>>
>> 1) anything obvious I am doing wrong?
>> 2) where is the best place to get some demo .grib or NetCDF data that I
>> can use to show off the cool new mesh stuff in 3.4 (with vector arrows etc).
>>
>> Regards
>>
>> Tim
>>
>> —
>>
>>
>>
>>
>>
>>
>>
>> *Tim Sutton*
>>
>> *Co-founder:* Kartoza
>> *Ex Project chair:* QGIS.org
>>
>> Visit http://kartoza.com to find out about open source:
>>
>> Desktop GIS programming services
>> Geospatial web development
>> GIS Training
>> Consulting Services
>>
>> *Skype*: timlinux
>> *IRC:* timlinux on #qgis at freenode.net
>>
>> _______________________________________________
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>
>
>
> --
> Saber Razmjooei
> www.lutraconsulting.co.uk
> +44 (0)7568 129733
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