Hi Jed,
I look at GDAL sources. The Times projection is supported in GDAL/OGR.
For example, you can user ESRI prj file as input parameter (s_srs,
t_srs). for gdalwarp/gdal_translate.
Best regards,
Dmitry
25.03.2014 3:01, Jed O. Kaplan пишет:
Dear Dmitriy,
Yes that is the correct projection code, but the problem is - and hence my
original question - that the “Times” projection referred to on the link you
sent me is not defined in proj4. I’m wondering if anyone has programmed it, or
if someone would be so kind as to assist me in making my own code for a new map
projection for proj4.
Many thanks again,
Jed Kaplan
On 24 Mar 2014, at 20:38, Dmitriy Baryshnikov <[email protected]> wrote:
Hi Jed,
I'm look for this projection on spatialreference.org. I found this one:
http://spatialreference.org/ref/sr-org/7670/
Does this one the same or close to the ESRI one?
Best regards,
Dmitry
24.03.2014 22:42, Jed O. Kaplan пишет:
Dear GDAL gurus,
I have some scanned maps in the “Times" projection that I would like to
orthorectify using gdalwarp and other GDAL tools. It appears that this projection is
not supported in the version of proj4/GDAL that I have, though it seems to be
included in most ESRI software
(http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//003r00000045000000).
Would anyone happen to know of free software I could use to rectify scanned
maps in the Times projection? Alternatively, I could try programming the
projection into proj4 myself, though I’ve never done this before. Snyder
provides the formulas for the forward projection in his book “Flattening the
Earth…” (pg. 213). If I would program a new projection in proj4, are there
particular issues I need to be aware of?
Many thanks in advance for your help!
Jed Kaplan
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