I would like some advice regarding working in projections other
than lat-long or UTM.
I have been assigned a project compiling a number of continental scale
datasets for Australia. It would probably be easiest to use Lat-Long
as my base reference system. However, displaying or printing Australia
in rectangular coordinates based on LL is fairly ugly - everything is
squashed and stretched sideways. Furthermore, many of the source data
are found on hard-copy maps in conic projections - usually with standard
parallels at 18oS and 36oS. Thus, digitising these would be best done
into a system that understands this projection.
When establishing a new location, GRASS gives the option "other projection"
but when you choose this, you are pretty much left on your own. Is this
any different to using "x,y" - ie a plain vanilla cartesian system?
If it _is_ something smarter than this, then how do I use it? Ie, how do
I specify the limits of a region, and what units should I use for
the distance measurement? Where is the documentation?
The data will be a combination of raster and vector. I guess (to repeat)
I would be happiest referencing this using lat-long, but displaying in
a simple conic, and being able to input from source material in simple
conic. Is GRASS really the tool for me here?
I'm sure I am being very naive, but this is a real problem and people
are expecting a solution!
Cheers
Simon Cox
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__ L Dr Simon Cox
,~' L_|\ VIEPS Department of Earth Sciences,
,-' \ Monash University, Clayton Vic 3168
( \ Australia
\ ___ / Phone +61 3 905 5762
L,~' "\_x/ Fax +61 3 905 5062
u simon@artemis.earth.monash.edu.au
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