Hello,
I'm aware that not everyone who uses R is an astronomer, and so
apologies in advance to those people for the nature of this email. I
need to convert right-ascension and declination (RA & DEC) coordinates
for an object on the sky into physical pixel positions in a FITS image
in R.
There is a C library that does this, WCSLIB by Mark Calabretta
(http://www.atnf.csiro.au/people/mcalabre/WCS/), however I am unsure how
to use it in R. I do not program in C, which adds to the problem. I
have created the libwcs.so file and moved it to /usr/local/lib already,
and am able to load the library in R using:
> dyn.load("/usr/local/lib/libwcs.so")
and then check that the function I need is available using:
> is.loaded("wcss2p")
[1] TRUE
My problem now is how to actually use it, as the author of the library
does not use R. I was wondering if anyone in the community has used
this library before, and if so how?
Thankyou in advance,
Lee Kelvin
--
School of Physics & Astronomy
University of St Andrews
North Haugh
St Andrews KY16 9SS
United Kingdom
Phone (+44) [0]1334461668
Email lsk9 at st-andrews.ac.uk
