Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Hi Peter,
woohoo, awesome, okay now I get it and it works.
I thought that as the 2dm file had duplicates of the cells & nodes in
the simple mesh I was looking at that it wasn't needed. Also the xdmf
loads directly into paraview so I thought that QGIS would do the same
thing.
All I need to do is generate a 2dm file with nodes and cells like the
examples and my meshes *should work, easy.

Thanks again, I'll post this back to QGIS users in case anyone else
hits the same issue.
Matt

On Fri, Sep 2, 2022 at 5:58 PM Peter Petrik
 wrote:
>
> Hi,
>
> 1)
> on linux/docker, try to set
> export LD_LIBRARY_PATH=
> ./mdalinfo ...
>
> 2) XDMF is a dataset with values ONLY. So in that menu you need to load 2dm 
> file == definition of your mesh frame, and once loaded, you right-click on 
> the mesh layer and "add values/datasets" in the properties (XMDF) file. Some 
> files (e.g. netcdf) has it in one file all, but this one is different.  Best 
> to check some online tutorials.
>
> Kind Regards,
> Peter Petrík
> CPO of Mergin Maps
> LI, Mergin Maps
>
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Re: [Qgis-user] mdal / mesh simple formats

[Peter Petrik via Qgis-user]

Hi Matt,

all files in the MDAL/tests/data are supported and should be working. There
could be few possibilities why it does not work: 1) your QGIS does not have
that particular MDAL driver compiled 2) you are not opening the file as
mesh layer but as raster/vector layer
MDAL has a small command line utility that can be used to test if your file
works without QGIS (you may need to compile it though)

Kind Regards,
Peter Petrík
CPO of Mergin Maps
LI , Mergin Maps






On Mon, Aug 29, 2022 at 2:01 PM Matt Boyd  wrote:

> Thanks Peter,
> my data already looks very similar to the xdmf sample, my plan was to
> just replicate this format or something not very different.
>
> github  lutraconsulting...   MDAL\tests\data\xdmf\simple
>
> However, I can't get QGIS to load simpleXFMD.xmf or simpleXFMD.h5. The
> xmf isn't recognised and the h5 just comes in as a single line of
> squares.
> I was hoping this format was supported as they are in the MDAL repo.
> Are the xmf/h5 supported or are they in there as an example of what is
> converted to the supported 2dm format?
>
> Thanks again, any light you could shed would be appreciated.
>
> Matt
>
>
>
> On Mon, Aug 29, 2022 at 9:01 PM Peter Petrik
>  wrote:
> >
> > Hi Matt,
> >
> > MDAL basically supports a bunch of data formats that are mostly defined
> by the suppliers of the results. It comes with the fileformat (e.g. ASCII
> or netCDF, ...) + data spec (which arrays are defined/expected with which
> properties). So either you need to replicate one of the supported formats or
> > alternatively we can write a data reader for your format in MDAL.
> >
> > Kind Regards,
> > Peter Petrík
> > CPO of Mergin Maps
> > LI, Mergin Maps
> >
> >
> >
> >
> >
> > On Sat, Aug 27, 2022 at 3:02 AM Matt Boyd via Qgis-user <
> qgis-user@lists.osgeo.org> wrote:
> >>
> >> Thanks Richard,
> >> that looks interesting. I can now get regular grid / square mesh to
> >> display correctly but I'm working with tri-mesh and anything I try to
> >> load using that ends up like this..Just a line of squares.
> >> There's something obvious I'm missing in the format here.
> >>
> >> On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
> >>  wrote:
> >> >
> >> > Hi Matt,
> >> >
> >> > I'm not a Mesh expert either, but I use (and create) netcdf using
> python using the
> >> > https://github.com/Unidata/netcdf4-python module
> >> >
> >> > Netcdf is pretty good supported in QGIS in my experience
> >> >
> >> > Our data has also a time dimension so we use the CF convention [0]
> and fiddling around with the so called UGRID convention [1] But maybe that
> is both too much for a simple tin...
> >> >
> >> > I Googled:
> >> >
> https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
> >> > as being able to convert hdf5 to netcdf... didn't/couldn't try/test
> though..
> >> >
> >> > Regards,
> >> >
> >> > Richard Duivenvoorde
> >> >
> >> > [0]
> https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
> >> > [1]
> http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
> >> >
> >> > On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
> >> > > Thanks, thats pretty helpful.
> >> > > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
> >> > > under the xdmf directory there the xmf/hdf files look pretty similar
> >> > > to what I'm using but they won't load. there's a partial duplicate
> of
> >> > > the data in the hdf file in that directory as a 2dm file which does
> >> > > work.
> >> > > I'm still not sure if I'm supposed to be able to load the xmf/hdf
> >> > > files directly using mdal? I can easily drop out my hdf5 data to the
> >> > > 2dm format is this the proposed way to do it?
> >> > >
> >> > > Thanks again
> >> > > Matt
> >> > >
> >> > > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
> >> > >  wrote:
> >> > >>
> >> > >> Hi Matt,
> >> > >>
> >> > >> The mdal repo has a number of mesh data
> >> > >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data)
> but
> >> > >> whether these are simple meshes/formats or not is beyond my
> >> > >> understanding of this data type.
> >> > >>
> >> > >> Hope that helps,
> >> > >>
> >> > >> Harrissou
> >> > >>
> >> > >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
> >> > >>
> >> > >>> Hi QGIS people,
> >> > >>> I asked something like this a couple of years ago, managed to find
> >> > >>> some workarounds and now that I know a little more about what I'm
> >> > >>> doing I could use a bit of help.
> >> > >>> I've got some simple tin meshes that I'd like to drop into QGIS,
> they
> >> > >>> get generated in a python modelling software I'm using.
> >> > >>> The data all sits in a single hdf5 file, points with coordinates,
> the
> >> > >>> cells which are just the indexes of 3 points, plus attributes for
> each
> >> > >>> point. About the simplest mesh setup I can imagine.
> >> > >>> I'm trying to find the 

Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks Peter,
my data already looks very similar to the xdmf sample, my plan was to
just replicate this format or something not very different.

github  lutraconsulting...   MDAL\tests\data\xdmf\simple

However, I can't get QGIS to load simpleXFMD.xmf or simpleXFMD.h5. The
xmf isn't recognised and the h5 just comes in as a single line of
squares.
I was hoping this format was supported as they are in the MDAL repo.
Are the xmf/h5 supported or are they in there as an example of what is
converted to the supported 2dm format?

Thanks again, any light you could shed would be appreciated.

Matt



On Mon, Aug 29, 2022 at 9:01 PM Peter Petrik
 wrote:
>
> Hi Matt,
>
> MDAL basically supports a bunch of data formats that are mostly defined by 
> the suppliers of the results. It comes with the fileformat (e.g. ASCII or 
> netCDF, ...) + data spec (which arrays are defined/expected with which 
> properties). So either you need to replicate one of the supported formats or
> alternatively we can write a data reader for your format in MDAL.
>
> Kind Regards,
> Peter Petrík
> CPO of Mergin Maps
> LI, Mergin Maps
>
>
>
>
>
> On Sat, Aug 27, 2022 at 3:02 AM Matt Boyd via Qgis-user 
>  wrote:
>>
>> Thanks Richard,
>> that looks interesting. I can now get regular grid / square mesh to
>> display correctly but I'm working with tri-mesh and anything I try to
>> load using that ends up like this..Just a line of squares.
>> There's something obvious I'm missing in the format here.
>>
>> On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
>>  wrote:
>> >
>> > Hi Matt,
>> >
>> > I'm not a Mesh expert either, but I use (and create) netcdf using python 
>> > using the
>> > https://github.com/Unidata/netcdf4-python module
>> >
>> > Netcdf is pretty good supported in QGIS in my experience
>> >
>> > Our data has also a time dimension so we use the CF convention [0] and 
>> > fiddling around with the so called UGRID convention [1] But maybe that is 
>> > both too much for a simple tin...
>> >
>> > I Googled:
>> > https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
>> > as being able to convert hdf5 to netcdf... didn't/couldn't try/test 
>> > though..
>> >
>> > Regards,
>> >
>> > Richard Duivenvoorde
>> >
>> > [0] https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
>> > [1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
>> >
>> > On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
>> > > Thanks, thats pretty helpful.
>> > > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
>> > > under the xdmf directory there the xmf/hdf files look pretty similar
>> > > to what I'm using but they won't load. there's a partial duplicate of
>> > > the data in the hdf file in that directory as a 2dm file which does
>> > > work.
>> > > I'm still not sure if I'm supposed to be able to load the xmf/hdf
>> > > files directly using mdal? I can easily drop out my hdf5 data to the
>> > > 2dm format is this the proposed way to do it?
>> > >
>> > > Thanks again
>> > > Matt
>> > >
>> > > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
>> > >  wrote:
>> > >>
>> > >> Hi Matt,
>> > >>
>> > >> The mdal repo has a number of mesh data
>> > >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
>> > >> whether these are simple meshes/formats or not is beyond my
>> > >> understanding of this data type.
>> > >>
>> > >> Hope that helps,
>> > >>
>> > >> Harrissou
>> > >>
>> > >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
>> > >>
>> > >>> Hi QGIS people,
>> > >>> I asked something like this a couple of years ago, managed to find
>> > >>> some workarounds and now that I know a little more about what I'm
>> > >>> doing I could use a bit of help.
>> > >>> I've got some simple tin meshes that I'd like to drop into QGIS, they
>> > >>> get generated in a python modelling software I'm using.
>> > >>> The data all sits in a single hdf5 file, points with coordinates, the
>> > >>> cells which are just the indexes of 3 points, plus attributes for each
>> > >>> point. About the simplest mesh setup I can imagine.
>> > >>> I'm trying to find the simplest format that mdal supports with an
>> > >>> example dataset so I can make something similar. (ideally hdf5 so I
>> > >>> don't need to work out how to use anything new in python).
>> > >>>
>> > >>> Any tips?
>> > >>> Thanks
>> > >>> Matt
>> > >>> ___
>> > >>> Qgis-user mailing list
>> > >>> Qgis-user@lists.osgeo.org
>> > >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >> ___
>> > >> Qgis-user mailing list
>> > >> Qgis-user@lists.osgeo.org
>> > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > > ___

Re: [Qgis-user] mdal / mesh simple formats

[Peter Petrik via Qgis-user]

Hi Matt,

MDAL basically supports a bunch of data formats that are mostly defined by
the suppliers of the results. It comes with the fileformat (e.g. ASCII or
netCDF, ...) + data spec (which arrays are defined/expected with which
properties). So either you need to replicate one of the supported formats
or
alternatively we can write a data reader for your format in MDAL.

Kind Regards,
Peter Petrík
CPO of Mergin Maps
LI , Mergin Maps






On Sat, Aug 27, 2022 at 3:02 AM Matt Boyd via Qgis-user <
qgis-user@lists.osgeo.org> wrote:

> Thanks Richard,
> that looks interesting. I can now get regular grid / square mesh to
> display correctly but I'm working with tri-mesh and anything I try to
> load using that ends up like this..Just a line of squares.
> There's something obvious I'm missing in the format here.
>
> On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
>  wrote:
> >
> > Hi Matt,
> >
> > I'm not a Mesh expert either, but I use (and create) netcdf using python
> using the
> > https://github.com/Unidata/netcdf4-python module
> >
> > Netcdf is pretty good supported in QGIS in my experience
> >
> > Our data has also a time dimension so we use the CF convention [0] and
> fiddling around with the so called UGRID convention [1] But maybe that is
> both too much for a simple tin...
> >
> > I Googled:
> >
> https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
> > as being able to convert hdf5 to netcdf... didn't/couldn't try/test
> though..
> >
> > Regards,
> >
> > Richard Duivenvoorde
> >
> > [0]
> https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
> > [1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
> >
> > On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
> > > Thanks, thats pretty helpful.
> > > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
> > > under the xdmf directory there the xmf/hdf files look pretty similar
> > > to what I'm using but they won't load. there's a partial duplicate of
> > > the data in the hdf file in that directory as a 2dm file which does
> > > work.
> > > I'm still not sure if I'm supposed to be able to load the xmf/hdf
> > > files directly using mdal? I can easily drop out my hdf5 data to the
> > > 2dm format is this the proposed way to do it?
> > >
> > > Thanks again
> > > Matt
> > >
> > > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
> > >  wrote:
> > >>
> > >> Hi Matt,
> > >>
> > >> The mdal repo has a number of mesh data
> > >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
> > >> whether these are simple meshes/formats or not is beyond my
> > >> understanding of this data type.
> > >>
> > >> Hope that helps,
> > >>
> > >> Harrissou
> > >>
> > >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
> > >>
> > >>> Hi QGIS people,
> > >>> I asked something like this a couple of years ago, managed to find
> > >>> some workarounds and now that I know a little more about what I'm
> > >>> doing I could use a bit of help.
> > >>> I've got some simple tin meshes that I'd like to drop into QGIS, they
> > >>> get generated in a python modelling software I'm using.
> > >>> The data all sits in a single hdf5 file, points with coordinates, the
> > >>> cells which are just the indexes of 3 points, plus attributes for
> each
> > >>> point. About the simplest mesh setup I can imagine.
> > >>> I'm trying to find the simplest format that mdal supports with an
> > >>> example dataset so I can make something similar. (ideally hdf5 so I
> > >>> don't need to work out how to use anything new in python).
> > >>>
> > >>> Any tips?
> > >>> Thanks
> > >>> Matt
> > >>> ___
> > >>> Qgis-user mailing list
> > >>> Qgis-user@lists.osgeo.org
> > >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > >> ___
> > >> Qgis-user mailing list
> > >> Qgis-user@lists.osgeo.org
> > >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > > ___
> > > Qgis-user mailing list
> > > Qgis-user@lists.osgeo.org
> > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >
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Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks Richard,
that looks interesting. I can now get regular grid / square mesh to
display correctly but I'm working with tri-mesh and anything I try to
load using that ends up like this..Just a line of squares.
There's something obvious I'm missing in the format here.

On Fri, Aug 26, 2022 at 4:56 PM Richard Duivenvoorde
 wrote:
>
> Hi Matt,
>
> I'm not a Mesh expert either, but I use (and create) netcdf using python 
> using the
> https://github.com/Unidata/netcdf4-python module
>
> Netcdf is pretty good supported in QGIS in my experience
>
> Our data has also a time dimension so we use the CF convention [0] and 
> fiddling around with the so called UGRID convention [1] But maybe that is 
> both too much for a simple tin...
>
> I Googled:
> https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
> as being able to convert hdf5 to netcdf... didn't/couldn't try/test though..
>
> Regards,
>
> Richard Duivenvoorde
>
> [0] https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
> [1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables
>
> On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:
> > Thanks, thats pretty helpful.
> > I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
> > under the xdmf directory there the xmf/hdf files look pretty similar
> > to what I'm using but they won't load. there's a partial duplicate of
> > the data in the hdf file in that directory as a 2dm file which does
> > work.
> > I'm still not sure if I'm supposed to be able to load the xmf/hdf
> > files directly using mdal? I can easily drop out my hdf5 data to the
> > 2dm format is this the proposed way to do it?
> >
> > Thanks again
> > Matt
> >
> > On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
> >  wrote:
> >>
> >> Hi Matt,
> >>
> >> The mdal repo has a number of mesh data
> >> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
> >> whether these are simple meshes/formats or not is beyond my
> >> understanding of this data type.
> >>
> >> Hope that helps,
> >>
> >> Harrissou
> >>
> >> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
> >>
> >>> Hi QGIS people,
> >>> I asked something like this a couple of years ago, managed to find
> >>> some workarounds and now that I know a little more about what I'm
> >>> doing I could use a bit of help.
> >>> I've got some simple tin meshes that I'd like to drop into QGIS, they
> >>> get generated in a python modelling software I'm using.
> >>> The data all sits in a single hdf5 file, points with coordinates, the
> >>> cells which are just the indexes of 3 points, plus attributes for each
> >>> point. About the simplest mesh setup I can imagine.
> >>> I'm trying to find the simplest format that mdal supports with an
> >>> example dataset so I can make something similar. (ideally hdf5 so I
> >>> don't need to work out how to use anything new in python).
> >>>
> >>> Any tips?
> >>> Thanks
> >>> Matt
> >>> ___
> >>> Qgis-user mailing list
> >>> Qgis-user@lists.osgeo.org
> >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >> ___
> >> Qgis-user mailing list
> >> Qgis-user@lists.osgeo.org
> >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > ___
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> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>
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Re: [Qgis-user] mdal / mesh simple formats

[Richard Duivenvoorde via Qgis-user]

Hi Matt,

I'm not a Mesh expert either, but I use (and create) netcdf using python using 
the
https://github.com/Unidata/netcdf4-python module

Netcdf is pretty good supported in QGIS in my experience
 
Our data has also a time dimension so we use the CF convention [0] and fiddling around with the so called UGRID convention [1] But maybe that is both too much for a simple tin...


I Googled:
https://stackoverflow.com/questions/48864357/convert-hdf5-to-netcdf4-in-bash-r-python-or-ncl
as being able to convert hdf5 to netcdf... didn't/couldn't try/test though..

Regards,

Richard Duivenvoorde

[0] https://en.wikipedia.org/wiki/Climate_and_Forecast_Metadata_Conventions
[1] http://ugrid-conventions.github.io/ugrid-conventions/#data-variables

On 8/26/22 03:32, Matt Boyd via Qgis-user wrote:

Thanks, thats pretty helpful.
I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
under the xdmf directory there the xmf/hdf files look pretty similar
to what I'm using but they won't load. there's a partial duplicate of
the data in the hdf file in that directory as a 2dm file which does
work.
I'm still not sure if I'm supposed to be able to load the xmf/hdf
files directly using mdal? I can easily drop out my hdf5 data to the
2dm format is this the proposed way to do it?

Thanks again
Matt

On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
 wrote:


Hi Matt,

The mdal repo has a number of mesh data
(https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
whether these are simple meshes/formats or not is beyond my
understanding of this data type.

Hope that helps,

Harrissou

Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :


Hi QGIS people,
I asked something like this a couple of years ago, managed to find
some workarounds and now that I know a little more about what I'm
doing I could use a bit of help.
I've got some simple tin meshes that I'd like to drop into QGIS, they
get generated in a python modelling software I'm using.
The data all sits in a single hdf5 file, points with coordinates, the
cells which are just the indexes of 3 points, plus attributes for each
point. About the simplest mesh setup I can imagine.
I'm trying to find the simplest format that mdal supports with an
example dataset so I can make something similar. (ideally hdf5 so I
don't need to work out how to use anything new in python).

Any tips?
Thanks
Matt
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Re: [Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Thanks, thats pretty helpful.
I'm running QGIS 3.26.2-Buenos Aires installed from osgeo.
under the xdmf directory there the xmf/hdf files look pretty similar
to what I'm using but they won't load. there's a partial duplicate of
the data in the hdf file in that directory as a 2dm file which does
work.
I'm still not sure if I'm supposed to be able to load the xmf/hdf
files directly using mdal? I can easily drop out my hdf5 data to the
2dm format is this the proposed way to do it?

Thanks again
Matt

On Fri, Aug 26, 2022 at 4:09 AM Delaz J via Qgis-user
 wrote:
>
> Hi Matt,
>
> The mdal repo has a number of mesh data
> (https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but
> whether these are simple meshes/formats or not is beyond my
> understanding of this data type.
>
> Hope that helps,
>
> Harrissou
>
> Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :
>
> > Hi QGIS people,
> > I asked something like this a couple of years ago, managed to find
> > some workarounds and now that I know a little more about what I'm
> > doing I could use a bit of help.
> > I've got some simple tin meshes that I'd like to drop into QGIS, they
> > get generated in a python modelling software I'm using.
> > The data all sits in a single hdf5 file, points with coordinates, the
> > cells which are just the indexes of 3 points, plus attributes for each
> > point. About the simplest mesh setup I can imagine.
> > I'm trying to find the simplest format that mdal supports with an
> > example dataset so I can make something similar. (ideally hdf5 so I
> > don't need to work out how to use anything new in python).
> >
> > Any tips?
> > Thanks
> > Matt
> > ___
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Re: [Qgis-user] mdal / mesh simple formats

[Delaz J via Qgis-user]

Hi Matt,

The mdal repo has a number of mesh data 
(https://github.com/lutraconsulting/MDAL/tree/master/tests/data) but 
whether these are simple meshes/formats or not is beyond my 
understanding of this data type.


Hope that helps,

Harrissou

Le 25/08/2022 à 09:41, Matt Boyd via Qgis-user a écrit :


Hi QGIS people,
I asked something like this a couple of years ago, managed to find
some workarounds and now that I know a little more about what I'm
doing I could use a bit of help.
I've got some simple tin meshes that I'd like to drop into QGIS, they
get generated in a python modelling software I'm using.
The data all sits in a single hdf5 file, points with coordinates, the
cells which are just the indexes of 3 points, plus attributes for each
point. About the simplest mesh setup I can imagine.
I'm trying to find the simplest format that mdal supports with an
example dataset so I can make something similar. (ideally hdf5 so I
don't need to work out how to use anything new in python).

Any tips?
Thanks
Matt
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[Qgis-user] mdal / mesh simple formats

[Matt Boyd via Qgis-user]

Hi QGIS people,
I asked something like this a couple of years ago, managed to find
some workarounds and now that I know a little more about what I'm
doing I could use a bit of help.
I've got some simple tin meshes that I'd like to drop into QGIS, they
get generated in a python modelling software I'm using.
The data all sits in a single hdf5 file, points with coordinates, the
cells which are just the indexes of 3 points, plus attributes for each
point. About the simplest mesh setup I can imagine.
I'm trying to find the simplest format that mdal supports with an
example dataset so I can make something similar. (ideally hdf5 so I
don't need to work out how to use anything new in python).

Any tips?
Thanks
Matt
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