[gdal-dev] Use of sexagesimal "pseudo format" in pcs.csv?

[Jim Lacy]

All-

This morning I was confused by the formatting of lat/lon parameters used in the GDAL pcs.csv file.  I initially thought the lat/lon values in the file are standard decimal degrees, until I realized some things weren't adding up.  After digging, I learned those params use a "pseudo format" (EPSG:9110).  i.e., 45.50 = 45 degrees, 50 minutes *NOT* 45 degrees 30 minutes.

By comparison, the "epsg" file in PROJ.4 stores lat/lon parameters as decimal degrees.

I'm sure it's been this way for many years. There must be a reason?  Seems like it must lead to a lot of confusion.

Thanks for satisfying my curiosity,
Jim


----------------------------------------------
Jim Lacy
Wisconsin State Cartographer's Office
University of Wisconsin-Madison
(608) 262-6850
www.sco.wisc.edu<http://www.sco.wisc.edu/>
My calendar:  http://go.wisc.edu/xziys4

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20160426/929baace/attachment.html>