Re: questions about ncarg library for interpolation routines

On Mar 14, 2011, at 7:15 PM, Jemma Wu wrote:

> Hi Fred,
>
> Thanks very much for sending me the CUBSPL source code. I'll replace
> my old codes and see how it goes. I'll also have a look at the
> Fitgrid package and see if I can migrate to it.

I should have mentioned that the NCL versions of the functions in the
Fitgrid package are the functions with prefix "ft".

Fred

>
> Regards,
> Jemma
>
> On Sat, Mar 12, 2011 at 8:10 AM, Fred Clare <fredclare@mac.com> wrote:
> Jemma,
>
> Attached is complete source for the old cubic spline interpolation
> package. Dick Valent was able to dig this up. The package has seven
> routines: coeff1, terp1, coeff2, terp2, trip, search, interp. All of
> these are part of the HLU distribution, except for coeff2 and terp2.
>
> If you want to stay current, in place of using the cubic spline
> package,
> I would recommend using the more recent functions documented in
> the Fitgrid package at:
>
> http://ncarg.ucar.edu/ngmath/fitgrid/fithome.html
>
> Fred Clare
>
>
>
>
>
>
> On Mar 9, 2011, at 10:46 PM, Jemma Wu wrote:
>
> Hi Mary,
>
> Thanks for your help on installation of ncarg.5.
>
> Now I have managed to make the old Fortran codes (which used to run
> with ncarg.v4 if you remember) to run with ncarg.v5. However, the
> results are not very correct. I found the codes call some ncarg
> interpolation subroutines (coeff2, terp2, interp, etc) which were in
> the cubspl package (?) of version 4. But I couldn't find this
> package in the ncarg.v5 lib that I installed. Could you point to me
> which package they are in? and are these subroutines still the same
> with version 4?
>
> Many thanks.
>
> Regards,
> Jemma
>
>
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Received on Tue Mar 15 00:22:11 2011