[gdal-dev] Setting up a source resolution for TMS

Denis Rykov rykovd at gmail.com
Fri May 15 15:51:27 PDT 2020


Great! Thank you. I also found out that the same result can be achieved
with gdalwarp and "-ovr" option.
Is there any advantages of using gdalwarp instead of gdal_translate to
convert partial extent of TMS service to an image if reprojection is not
required?

On Fri, May 15, 2020 at 10:14 PM Even Rouault <even.rouault at spatialys.com>
wrote:

> On vendredi 15 mai 2020 19:23:30 CEST Denis Rykov wrote:
>
> > Hello,
>
> >
>
> > I'm using gdal_translate to convert a certain area of TMS service (WMS
>
> > driver) to GeoTIFF. Is there a way to set up a zoom level for GDAL to be
>
> > used for building an image? By now GDAL picks zoom level with closest
>
> > resolution. For example, if I want to get image of 1 meter resolution (
>
> > "-tr 1 1") GDAL goes to zoom level that has 1.2 resolution. But it would
> be
>
> > great to have a way to pick a zoom level with resolution not lower than
> the
>
> > specified (0.6 in this case). Thanks.
>
>
>
> You can use the generic open option -oo OVERVIEW_LEVEL=x
>
>
>
> If the full resolution is zoom_level=18, and you're interested in
> zoom_level=15, then x = (18 - 15) - 1 = 2
>
>
>
> Even
>
>
>
> --
>
> Spatialys - Geospatial professional services
>
> http://www.spatialys.com
>
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