[Proj] FW Tools 1.2.2 beginner
theconor at yahoo.com
Thu May 10 20:02:53 EDT 2007
Thanks for the quick reply.
Based on your replies I should be able to get started
with using GDALwarp and am happy to do so.
However, before I start I would like to be
clearer....... Could I run proj.4 from the command
line directly without GDALwarp and if so, why would I
need to use GDALwarp?
--- Frank Warmerdam <warmerdam at pobox.com> wrote:
> Conor O'Donoghue wrote:
> > I have just installed FW tools 1.2.2
> (successfully, I
> > believe)but I am do not know how to proceed.
> > Two Questions
> > 1) I need help with choosing the most appropriate
> > utilitiy (GDAL or Proj for example). My objective
> > to forward re-project, or warp, tiff's (vector
> > later). I have no need to use the functionality
> > another program, so i think the command line
> should be
> > fine.
> Generally speaking you would use gdalwarp to warp a
> image. For instance if you have a geotiff
> currently samples
> on a WGS84 grid, and you wanted to reproject it to
> UTM 11 WGS84
> you might do:
> gdalwarp -s_srs '+proj=latlong +datum=WGS84' \
> -t_srs '+proj=utm +zone=11 +datum=WGS84' in.tif
> > 2) I need some guidance in getting started. I have
> > read much of Gerald L. Evenden's Proj.4 User's
> > and i believe i can manage the command line
> > Since I have no programming knowledge and can only
> > limp around in DOS I am not sure how to get the
> > command line working in the dos shell. (For
> > when in the FWTools1.2.2 or proj_lib directories
> > I type "$ proj" I get '$' is not recognized as an
> > internal or external command, operable program or
> > batch file.) in that case i am not invoking the
> > proj.exe.
> The "$" is the command prompt in some examples.
> Don't actually
> type it in. Likewise if you see commands prefixed
> by C:\> or
> % it is likely the same thing.
> Good luck,
> I set the clouds in motion - turn up | Frank
> Warmerdam, warmerdam at pobox.com
> light and sound - activate the windows |
> and watch the world go round - Rush | President
> OSGeo, http://osgeo.org
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