Hi Jeroen,
the postProcessRaster code usually does some processing after the read
operation such as adding alpha or applying an affine transformation to fit
the request.
>From you feedbacks, I assume that for your HDF5 data, you don't need the
negative scale right?
In that case, I'm wondering whether we can introduce a FLIP_Y read
parameter to be provided to the read operation in order to arrange the code
to do proper flipping/scaling when set to true.
Does it make sense?
Cheers,
Daniele
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On Sun, Dec 1, 2013 at 7:27 PM, Dries Jeroen <[email protected]> wrote:
> Hi all,
>
> I'm trying to use the unsupported netcdf plugin to support reading from
> HDF5 image files. Currently this results in an exception, because
> NetCDFResponse.postProcessRaster tries to apply a jai scale operation to
> the image, using a negative Y-scale.
>
> This negative Y-scale is more or less normal, because the latitude
> coordinate variable in netcdf is a decreasing value. This is also hard
> coded in UnidataVariableAdapter:
>
> scaleY = -(max-min) / valuesLength;
> origin[1] = max;
>
> So now I'm wondering how to fix the postProcessRaster code, without
> breaking anything else. Does anyone know what the goal of this method is?
>
> Should I also log a jira issue?
>
> thanks,
> Jeroen
>
> Jeroen Dries
> TAP - Centre for Remote Sensing and Earth Observation Processes
> VITO NV | Boeretang 200 | 2400 Mol
> tel. +32 14 33 55 11 | [email protected]
> VITO Disclaimer: http://www.vito.be/e-maildisclaimer
>
>
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