On Oct 16, 2009, at 10:24 AM, Glynn Clements wrote:
Hamish wrote:
After selecting the projection in the wizard, you go to a
new page. Currently, if the projection is UTM, you get to
select zone and hemisphere. If it is not UTM, you don't get
to select any parameters. The UTM selection is hard wired
into the GUI.
I'm changing this so that the the parameters parsed from
proj-parms.table appear for whatever projection is
chosen--UTM or otherwise.
LL, UTM, and STP are not real projections so hardwiring them
as exceptions wouldn't be cause for alarm; but ok, if a single
method does the trick then no complaints from me...
In particular, I would suspect that using PROJECTION_OTHER for a UTM
projection may confuse either GRASS or the user. E.g. there are many
places where PROJECTION_UTM causes cellhd.zone to become relevant.
OTOH, we might want to consider changing this. There isn't anything
inherently special about UTM; it's not like switching zones is any
different to other projection changes.
Really, there only needs to be 3 PROJECTION_* options: XY, LL and
OTHER. UTM and STP should ultimately be assimilated into OTHER.
--
Glynn Clements <[email protected]>
I don't know how this works in the underlying C code, this all can be
handled in a single method that parses proj-parms.table except for
State Plane. I can see why you call latlon a pseudo projection, but
not UTM. AFAICT, it is a legitimate projection like the others.
Michael
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