Re: [Help-gsl] Compiling & Testing New Interpolation Type

[Patrick Alken]

I did notice you talking about 1.6 in your earlier messages, but assumed 
it was a typo and you meant 1.16, oops.

On 03/20/2014 11:11 AM, Jean-François Caron wrote:
> My original problem was that I wanted to add an interpolation type to GSL.  
> Specifically I want monotonic cubic-splines following the description in 
> Steffen (1990): http://adsabs.harvard.edu/full/1990A%26A...239..443S

I took a quick look at your code earlier and it looks pretty nice. I 
noticed you commented out the _integ function - is this something you 
could add to make it feature complete with the other interpolation types?

It is important to add automated tests for this. Can you look at 
interpolation/test.c and design similar tests for your new method? Also 
I think it would be nice to add a figure to the manual illustrating the 
differences between cubic, akima, and your new steffen method (similar 
to the figures in the Steffen paper). This would help users a lot when 
trying to decide what method to use. Do you happen to have a dataset 
which shows a nice contrast like Figs 1, 3 and 8 from that paper?

When everything is ready I would be happy to add it to GSL, as we are 
already planning to update the interpolation module for the next 
release. When I find some time I want to import the 2D interpolation 
extension discussed previously, and also add Hermite interpolation.

It would be easiest for us if you could clone the GSL git repository and 
make your changes there. You could make a new branch called 'steffen' or 
something and publish it to github, or just send a patch file to me, 
whichever is easiest.

Patrick

On Mar 19, 2014, at 18:40 , Dave Allured - NOAA Affiliate 
<address@hidden> wrote:
> > More data.  I tried the same plain build recipe, GSL 1.16 on our test
> > machine which is at Mac OS 10.9.3.  Got another perfect build, no make
> > check errors, no PPC-related issues.  Outputs on request, please be
> > specific.
> >
> > CC=clang
> > CFLAGS=-g
> > ./configure --prefix /Users/dallured/Disk/3rd/gsl/1.16.os10.9
> >
> > mac27:~/Disk/3rd/gsl/1.16.os10.9 57> sw_vers
> > ProductName: Mac OS X
> > ProductVersion: 10.9.3
> > BuildVersion: 13D17
> >
> > mac27:~/Disk/3rd/gsl/1.16.os10.9/src 36> \
> > ? grep -i '# [a-z]' ../logfiles/make-check.0319a.log | sort | uniq -c
> >   45 # ERROR: 0
> >   45 # FAIL:  0
> >   42 # PASS:  1
> >    3 # PASS:  2
> >   45 # SKIP:  0
> >   42 # TOTAL: 1
> >    3 # TOTAL: 2
> >   45 # XFAIL: 0
> >   45 # XPASS: 0
> >
> > mac27:~/Disk/3rd/gsl/1.16.os10.9 62> \
> > ? grep -c -i ppc logfiles/*319a*log
> > logfiles/configure.0319a.os10.9.log:0
> > logfiles/install.0319a.log:0
> > logfiles/make-check.0319a.log:0
> > logfiles/make.0319a.log:0
> >
> > mac27:~/Disk/3rd/gsl/1.16.os10.9 65> \
> > ? grep -i ppc src/config.h src/config.log src/config.status
> > src/config.h:/* #undef HAVE_GNUPPC_IEEE_INTERFACE */
> > src/config.log:HAVE_GNUPPC_IEEE_INTERFACE=''
> > src/config.status:S["HAVE_GNUPPC_IEEE_INTERFACE"]=""
> >
> > --Dave
> >
> > On Wed, Mar 19, 2014 at 5:27 PM, Jean-Francois Caron <address@hidden>
> > wrote:
> > > Dave is correct, I am using an "i686" 64-bit x86 mac.  For some reason
> > > it is still looking for the PPC mac header file.  The ./configure
> > > stage correctly identifies my system, so it's a bit strange.  Also GSL
> > > installs without errors when I do it from MacPorts, and MacPorts
> > > doesn't seem to do anything other than ./configure && make, from my
> > > reading of the portfile.
> > >
> > > When I get back to my Mac, I will look at the NOTES file to see if
> > > anything needs to be done for 10.9.
> > >
> > > Jean-François