[Proj] setting lambert conformal conic projection in gdalwarp

Mathew Fox mathewfoxx at gmail.com
Wed Aug 17 08:16:22 EST 2011

Hi Jose, Charles,

thanks for your input.
Now, what is a reasonable solution for this? Can I use a custom
projection in gdal (parsing the parameters without naming it "lcc")?


>* Matt
*>* There is a problem with the lcc projection. The two latitudes +lat_1 and
*>* +lat_2 define the standard parallels, where the cone intersects the
*>* ellipsoid. They can't be both zero (the cone would degenerate into a
*>* cylinder).
Of course, they *can* both be zero and the equations then become those
of the Mercator projection.  It's just that the authors of proj.4 chose
not to handle this case.


Hi all,

I am having problems with the Lambert Conformal Conic projection.

I am trying to convert an LCC file into UTM:

gdalwarp -of GTiff -s_srs '+proj=lcc +lat_1=0 +lat_2=0 +lat_0=50  +lon_0=0
+x_0=0 +y_0=0 +units=m +no_defs' -t_srs '+proj=UTM +zone=18 +units=m
+datum=NAD83 +no_defs' cols.asc cols.tif

I got the parameters from an existing LCC file.

Problem is, when I try to set this projection to my file I get an error
about the projection parameters.
ERROR 6: Failed to initialize PROJ.4 with `+proj=lcc +lat_1=0 +lat_2=0
+lat_0=50 +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 +units=m +no_defs '.
conic lat_1 = -lat_2

Thank you in advance for any suggestions.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.maptools.org/pipermail/proj/attachments/20110817/c117d36c/attachment.htm 

More information about the Proj mailing list