[FWTools] Help with LCC georeferencing and reprojection

[Roger André]

Hi James,

The link you've posted doesn't seem to work.  Can you post the .png file
(without spaces in the name) instead?

Thanks,

Roger
--

On Thu, Oct 9, 2008 at 9:54 AM, James Trimble <jimmit.t at gmail.com> wrote:

> ** I apologize if this message appears more than once, but it does not look
> like it's going through for me **
>
> Hi, I am trying to georeference and reproject an FAA Enroute IFR chart.
> You can find the pdf version of this chart at
> http://www.jamestrimble.info/US <http://goog_1223485636161/>  L32 31 JUL
> 08.pdf
> <http://www.jamestrimble.info/US%20L32%2031%20JUL%2008.pdf>
>
> I use The Gimp to convert the pdf to png.
>
> The parameters are
> L-32  1:14NM (1020787)
> GP 47 56 09.6N 063 04 30.3W (Upper Right)
> GP 46 02 46.4N 079 29 47.0W (Upper Left)
> GP 41 48 34.9N 078 00 33.5W (Lower Left)
> GP 43 35 36.2N 062 37 08.3W (Lower Right)
>
> Top Standard Parallel 45 00 00N
> Bottom Standard Parallel 33 00 00N
> Central Meridian 95 00 00W
> Origin 39 00 00N 95 00 00W
>
> Datum = North American Datum of 1983
>
> Ultimately, I'd like to have this map in a mercator projection to overlay
> with google maps.
>
> The commands I tried to use are :
>
> gdal_translate -a_srs "+proj=lcc +lat_1=45.0 +lat_2=33.0 +lat_0=39.0
> +lon_0=95.0 +datum=NAD83" -a_ullr -79.4964 46.0462 -62.6190 43.5934 -of
> GTiff -co "INTERLEAVE=PIXEL" "C:\Documents and Settings\James\Desktop\US L32
> 31 JUL 08_CROPPED.png" .\USL32.tiff
>
> gdalwarp -of GTiff -co "INTERLEAVE=PIXEL" -s_srs "+proj=lcc +lat_1=45.0
> +lat_2=33.0 +lat_0=39.0 +lon_0=95.0 +datum=NAD83" -t_srs "+proj=merc
> +datum=NAD83" .\USL32.tiff .\USL32_MERC.tiff
>
> I would really appreciate some help on how to do this correctly.
>
> Thank you very much,
> James
>
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