[R] R and Fortran 9x -- advice

Christos Hatzis christos at nuverabio.com
Mon Nov 13 20:05:08 CET 2006


Can you recommend any good books on Fortran 90/95?  I had been an old user
of Fortran 77 but haven't followed the developments in the last 15 years or


Christos Hatzis, Ph.D.
Nuvera Biosciences, Inc.
400 West Cummings Park
Suite 5350
Woburn, MA 01801
Tel: 781-938-3830

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Mike Prager
Sent: Monday, November 13, 2006 1:00 PM
To: r-help at stat.math.ethz.ch
Subject: Re: [R] R and Fortran 9x -- advice

Tamas K Papp <tpapp at princeton.edu> wrote:

> I found some bottlenecks in my R code with Rprof.  First I wanted to 
> rewrite them in C, but a colleague keeps suggesting that I learn 
> Fortran, so maybe this is the time to do it...
> 1) I hear bad things about Fortran.  Sure, F77 looks archaic, but
> F90/95 seems nicer.  Is it worth learning, especially when I plan to 
> use it mainly from R?  Dusting off my C knowledge would take a bit of 
> time too, and I never liked C that much.

I'll answer this from the perspective of someone who uses Fortran 95
regularly.  It is a modern language, far more reliable and flexible than
Fortran 77 and quite well suited to most scientific problems.  I do think
it's worth learning, particularly if C is not to your taste.

Two free compilers for Fortran 95 are available.  It seems that
g95 is complete, while gfortran is nearing completion.  There are also
several high-quality commercial compilers, some of which are free under
certain operating systems and/or conditions and others of which (Lahey) are
quite inexpensive if one is willing to work from the command line or one's
own editor.

I can't address questions of R interoperability  -- not something I've done.

Mike Prager, NOAA, Beaufort, NC
* Opinions expressed are personal and not represented otherwise.
* Any use of tradenames does not constitute a NOAA endorsement.

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