working in conic projection

[Simon Cox]

Thanks Gerry for your response - I was hoping that you would be
listening (since you seem to be "Dr Projection" on the GRASS list!)

Firstly - I understand fully your remarks about what LL is and
is not.  This is also why I want to use LL to store the data.

In the context of GRASS however, these are the questions that I
see need to be solved:

(i)  How can I produce display and output in a conic projection
(which my "customers" want) if the data is all stored in LL?

(ii) Can I use the digitising capability of GRASS (ie v.digit)
to input data to a Lat-Lon database, from Conic projection
source material?  If the answer is negative, then what _do_ you
suggest that I use?  I am hoping that there is a solution that
does _not_ require me to do a course in cartographic projections! ;-)

I have two maps in front of me - they are annotated
"1:25 000 000.  Simple Conic Projection - Standard Parallels 18oS and 36oS"
&
"1:5 000 000.  Lambert Conformal Conic Projection - Standard Parallels 10oS and
30oS"

and I have an assortment of less-than-cartographic quality
stuff from publications that all appears to be in various conic
projections (probably the former - since this appears to be the
Australian Geological Survey's preference).  In the latter cases, many
of the features that I want to capture are not very strictly defined
(ie they have fuzzy boundaries) so we can probably live with this
level of precision for the moment.

Thanks for your help.

For the moment, I think that this stuff will be of sufficient interest
to the community to stay on the list, but we may like to go off-line
if it gets gory.

Cheers

Simon

----
___________________________________________________
      __  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 at artemis.earth.monash.edu.au
___________________________________________________