Hi Glynn,
apologize the private mail, i can see your answer on the list archive, but no
reply is sent to my mail box (mybe some problems with the mailng list :-/)
### ### ###
Massimo Di Stefano wrote:
> i've old scripts that i'm using to parse the "g.proj" output
>
> in it i have units == meters
>
> but form recent svn 6.5 version i can see it use : metres
>
> GRASS 6.5.svn (spearfish60):~/wxpython/data_catalog > g.proj -p
> -PROJ_UNITS------------------------------------------------
> unit : metre
> units : metres
> meters : 1
>
>
>
> is it a typo, or need i to modify my scripts to use : metre / metres ?
g.proj outputs whatever is in the PROJ_UNITS file. The textual
description of the unit can be whatever the user chooses it to be, or
in the case of "g.proj -c", whatever is obtained from the source
specified by georef=. GRASS itself only the unit/units fields for
display to the user; calculations use the numeric value in the meters
field.
What do your scripts use the "unit" or "units" field for?
### ### ###
I'm working on a script to send data from grass to ossimplanet,
it is :
http://svn.osgeo.org/ossim/trunk/gsoc/OssimPlanetSasha/r.planet.py
there is a "projinfo()" function i'm using it to retrieve if the location use
degrees or projected coordinates
what i need is to extract the "center of the map" and use it in the "zoom to"
action.
if the location is in degrees i use :
setCLL(map)
location ..
while if projected (meters) i use :
setCPRJ(map)
in the example i used the spearfish dataset.
but as you pint me ... the ceck on the "units" string .. is not a good idea :-(
beacouse the "units value" is "user - dependent"
and maybe someone that did a typo error defining the location will go in an
error during the script execution.
regards,
Massimo
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