wx location wizard fails to create a winkel tripel location

[hamish]

hi, if I try to make a winkel tripel location from the wx location wizard it ends with an error that it can't parse the PROJ.4 string and the [Finish] button never ungreys itself.

• choose by custom terms
• proj: wintri
• lon_0: 155E
• datum: wgs84
• summary page: Error..

It all works fine in text mode; 'wintri' is the last entry from 'proj -lp', so it's not some deep & ancient custom GRASS thing PROJ.4 doesn't know anything about.

thanks, Hamish

ps- in future release announcements we should continue to advertise how great the new loc wiz is. One of the common complaints from old triers of GRASS who were used to anything-goes-projection GISs was getting past+understanding the project (location) setup. now it's a thing of beauty..

[hamish]

still happens.

[hamish]

tested with latest 6.4svn. still happens.

"ERROR: Can't parse PROJ.4-style parameter string"

adding a debug message to g.proj's input.c (where the above error msg comes from), the problematic string it is trying is:

+proj=wintri +lat_0=0.0 +lat_1=10.0 +lon_0=155 +ellps=wgs84 +a=6378137.000 \
  +rf=298.257223563 +no_defs +no_defs

(+no_defs twice?)

from within a functioning Wintri location created using the text based location creator (the daily earthquake map in adhoc), g.proj -j gives:

+proj=wintri
+lat_0=0.0000000000
+lat_1=0.0000000000
+lon_0=155.0000000000
+a=6378137
+rf=298.257223563
+no_defs
+towgs84=0.000,0.000,0.000
+to_meter=1.0

which isn't happy with cs2cs either.

note +proj=wintri has no inverse projection.

?, Hamish

[hamish]

the cs2cs version of this is:

$ echo "156 1" | cs2cs +proj=longlat +datum=WGS84 +to \
  +proj=wintri +lat_0=0.0 +lat_1=10.0 +lon_0=155 +datum=WGS84 +no_defs

110468.24	111320.20 0.00

there is a chance that it wants to see +ellps=WGS84 instead of +ellps=wgs84?

no luck:

GRASS65> g.proj -c proj4='+proj=wintri +lat_0=0.0 +lat_1=10.0 +lon_0=155 \
   +ellps=WGS84 +a=6378137.000 +rf=298.257223563' loc=test_wintri
ERROR: Can't parse PROJ.4-style parameter string

?, Hamish