[gdal-dev] PDF-->JPEG-->KML. Confused about association betweenKML bounding box and PDF's neatli

[Boris Dev]

Thanks -- but I believe the problem is I didnt install PROJ when installing
GDAL from SVN source

On Thu, Oct 21, 2010 at 5:56 PM, Eli Adam <EAdam at co.lincoln.or.us> wrote:

> Boris,
>
> Did you try something like:
>
> gdalwarp -t_srs "EPSG:4326" in.jpg out.jpg
>
> or
>
> gdalwarp -t_srs 'EPSG:4326' in.jpg out.jpg
>
>
> HTH, Eli
>
> >>> Boris Dev <boris.dev at gmail.com> 10/20/2010 2:28 PM >>>
> thanks..I am almost there...I think I am making a simple usage typo?
>
> gdalwarp without the option '-t_srs EPSG:4326' works OK.
>
> But it doesnt work with the command written exactly as you have it
>
> >
> > gdalwarp -t_srs EPSG:4326 in.jpg out.jpg
> >
> >
> After that command, I do not get anything processed (it just outputs to the
> screen the usage info).
>
> I also had no luck with trying different variations of the -t_srs option
> such as
>
> gdalwarp -t_srs "+proj=EPSG:4326" in.jpg out.jpg
>
> I am using the most recent SVN GDAL.
>
>
>
> >  then use gdalinfo to get the corner coordinates.
> >
> > Currently the entire page of the PDF is rendered into the image.
> Perhaps
> > we can convince Even to add an option to convert only the mapped area (or
> > mask everything else?)
> >
> > Best Regards,
> > Brent Fraser
> >
> >
> > On 10/20/2010 8:07 AM, Boris Dev wrote:
> >
> > My objective is to make a KML ground overlay with a geospatial PDF map.
> >
> > Using GDAL's translate utility I have converted the PDF to a JPEG. The
> next
> > step and problem for me is to write the text of the KML ground overlay,
> > which requires a text of bounding box information like this:
> >
> > <LatLonBox>
> >         <north>37.91904192681665</north>
> >         <south>37.46543388598137</south>
> >         <east>15.35832653742206</east>
> >         <west>14.60128369746704</west>
> >
> >
> >         <rotation>-0.1556640799496235</rotation>
> >       </LatLonBox>
> >
> >
> > As GDAL's output, I saw that the entire PDF with legend, title, etc and
> not
> > just the map image was converted.
> >
> > As GDAL's output, I also saw 2 parts of data that seem they are useful to
> > match a bounding box to the map within the jpeg, but I cant figure out
> the
> > puzzle of how to make this work? Can I get the bounding box of the entire
> > PDF image with this information below?
> >
> > Corner Coordinates:
> > Upper Left  (  666937.758, 2024687.983)
> > Lower Left  (  666991.811, 2018338.153)
> > Upper Right (  674511.276, 2024754.795)
> > Lower Right (  674565.328, 2018404.965)
> > Center      (  670751.543, 2021546.474)
> >
> > <MDI key="NEATLINE">POLYGON ((672676.488065659650601
> > 2019417.955749646294862,672636.091432046378031
> > 2024030.267778463661671,667347.405745737953112
> > 2023983.612156898481771,667385.539170471020043
> > 2019370.524140953086317,672676.488065659650601
> > 2019417.955749646294862,672676.488065659650601
> > 2019417.955749646294862,672676.488065659650601
> > 2019417.955749646294862,672676.488065659650601
> > 2019417.955749646294862))</MDI>
> >
> > I realize the coordinate above need to be converted to lat/long to be a
> KML
> > ground overlay onto Google Maps, which I think I can handle.
> >
> > But I am unsure if I need to extract the map image from the jpeg using
> the
> > NEATLINE?
> > How are the Corner Coordinates translated into a bounding box?
> >
> > Any suggestions?
> >
> >
> > _______________________________________________
> > gdal-dev mailing listgdal-dev at lists.osgeo.orghttp://
> lists.osgeo.org/mailman/listinfo/gdal-dev
> >
> >
>
>
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