<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 19, 2016 at 3:34 PM, Even Rouault <span dir="ltr"><<a href="mailto:even.rouault@spatialys.com" target="_blank">even.rouault@spatialys.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="">Le mardi 19 juillet 2016 15:27:05, Daniele Romagnoli a écrit :<br>
> Hi Even,<br>
> thanks for the feedback.<br>
><br>
> I was using it as a -co "GDAL_TIFF_INTERNAL_MASK=YES" to the latest command<br>
> and I was getting<br>
><br>
</span>> *Warning 6: driver GTiff does not support creation option<br>
> GDAL_TIFF_INTERNAL_MASK*<br>
<span class="">> Appending the line you provided me to that command worked!<br>
<br>
</span>Yes, there is some confusion around configuration options vs creation options,<br>
and you must be careful about the terminology used in the documentation.<br>
<br>
"Configuration options" are specified either with "--config name value" or as<br>
environmenet variables or with CPLSetConfigOption(name,value) in C<br>
<br>
"Creation options" are specified with gdal_translate -co name=value or as<br>
"name=value" strings in the papszOptions argument of Create()/CreateCopy()<br>
methods in C/C++<br>
<br></blockquote><div>Right, when seeing that option on some previous commands in my shell history, I have confused it as a Create option instead of a Configuration one.<br>Thanks for the clarification. Very helpful.<br></div><br><div>Cheers,<br></div>Daniele<br><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
GDAL_TIFF_INTERNAL_MASK is a configuration option since it can be used on an<br>
existing TIFF opened in update mode, to which you add a mask. Thus a creation<br>
option couldn't be used in that case (since a creation option is for when the<br>
target file does not exist yet).<br></blockquote><div><br><br><br><br><div><br></div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div class=""><div class="h5"><br>
> Thanks.<br>
> Daniele<br>
><br>
><br>
> On Tue, Jul 19, 2016 at 3:12 PM, Even Rouault <<a href="mailto:even.rouault@spatialys.com">even.rouault@spatialys.com</a>><br>
><br>
> wrote:<br>
> > Hi Daniele,<br>
> ><br>
> > > I have 2 issues with that:<br>
> > > 1) This solution is really not optimal. Wondering if there is a single<br>
> > > command to attach an external tif as a mask band of an existing raster<br>
> > > (provided it has same CRS, resolution, bbox, ecc)<br>
> ><br>
> > None that I can think of. Your workflow is probably close to optimum if<br>
> > you don't want to create the VRT at hand<br>
> ><br>
> > I think we would welcome a contribution of a Python script that would<br>
> > allow things like :<br>
> > - gdal_add_band.py -mask in.tif mask.tif out.vrt<br>
> > - gdal_add_band.py -alpha in.tif alpha.tif out.vrt<br>
> > - gdal_add_band.py in.tif extra_band.tif out.vrt<br>
> ><br>
> > > 2) What I get is that the mask has been set as an external file<br>
> > > final.tif.msk.<br>
> > > Is there any config option or opening option to open the final.tif in<br>
> > > update mode so that the band mask can be added as internal geotiff<br>
> > > mask?<br>
> ><br>
> > Yes, "--config GDAL_TIFF_INTERNAL_MASK YES". See "Internal nodata masks"<br>
> > paragraph of <a href="http://gdal.org/frmt_gtiff.html" rel="noreferrer" target="_blank">http://gdal.org/frmt_gtiff.html</a><br>
> ><br>
> > Even<br>
> ><br>
> > --<br>
> > Spatialys - Geospatial professional services<br>
> > <a href="http://www.spatialys.com" rel="noreferrer" target="_blank">http://www.spatialys.com</a><br>
<br>
--<br>
Spatialys - Geospatial professional services<br>
<a href="http://www.spatialys.com" rel="noreferrer" target="_blank">http://www.spatialys.com</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><span style="font-size:12.8px">==</span><br></div><div dir="ltr"><span style="font-size:12.8px">GeoServer Professional Services from the experts! Visit</span><br style="font-size:12.8px"><a href="http://goo.gl/it488V" style="color:rgb(17,85,204);font-size:12.8px" target="_blank">http://goo.gl/it488V</a><span style="font-size:12.8px"> for more information.</span><br>
==<br>
<br>Ing. Daniele Romagnoli<br>Senior Software Engineer<br><br>GeoSolutions S.A.S.<br><span style="font-size:12.8px">Via di Montramito 3/A</span><br>55054 Massarosa (LU)<br>Italy<br>phone: +39 0584 962313<br>fax: +39 0584 1660272<br><br><a href="http://www.geo-solutions.it" target="_blank">http://www.geo-solutions.it</a><br><a href="http://twitter.com/geosolutions_it" target="_blank">http://twitter.com/geosolutions_it</a><br><br>-------------------------------------------------------<br><p><span lang="IT"><font size="1"><b>AVVERTENZE AI SENSI DEL D.Lgs. 196/2003</b></font></span></p><p><span lang="IT"><font size="1">Le
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