I am trying to make use of the text rotation option in GEMPAK.
According to the documentation,
"The text rotation is a character input that specifies whether the
text is aligned with the screen (S) or with north (N) on a given
image. If the choice is invalid or not specified, the current
value
will be used."
which is given in the fifth option in TEXT. To test out the text
alignment option towards the north, I tried plotting a map of North
America with lat/lon lines using GPMAP with TEXT=1/21/1/1/N/C.
However, the lat/lon labels remain aligned with the screen and not
parallel with latitude lines. Is there something I have missed?
You haven't given GEMPAK anything to rotate... grid labels are relative
..
for example if we specify:
LATLON = 24/12/1/1;1/10;10/48.;-180./1
TEXT = 1.24///221/N/c
the result will be a geographic grid labeled every 10 degrees, but the
labels will be relative to the map surface... like so:
http://modelweather.com/files/patrick/no_grid.gif
However, if we specify plot all station IDs using STNPLT, and request
for them be north oriented using the same text qualifier above:
STNPLT = 5/1|3/12/1.25/2|sfstns.tbl
TEXT = 1.24///221/N/c
all station IDs will be oriented towards the north pole :
http://modelweather.com/files/patrick/rotate_text.gif
good luck...
--patrick
…………………………………………………………...........
Patrick L. Francis
Director of Research & Development
Aeris Weather
http://aerisweather.com/
http://modelweather.com/
wxprofessor@xxxxxxxxx
http://facebook.com/wxprofessor/
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