C code. Next number in series.

[johnag]

I have been looking at Open Office calc to work the next in a series if non-linear numbers, and calc does do a very good best fit and shows the equation. Just what I want. I now want to programme this into a C routine that I am writing so that the programme will both look-up what it can from a samples database, and extend them forward where it does not have enough samples. (I'm trying to understand some correlations). My thought at present is to take the Ooo calc formula and write it into my code. Before I do so, I wonder if anyone knows of any non-linear solver routines written in C that I could just plug in? I'm trying to do a best fit from only about 6 very accurate floats which graph like a curve.
Regards to all. I am a senior citizen absolutely amazed at the power of Linux.

[JosePF]

Hi,
In C i only know math library (im not a expertise) but you could take a look at R: The R Project for Statistical Computing.
Power statistical language, and fairly easy to learn, at least the basics...

I hope this can help you a litle
Regards
Regards

[johnag]

Hi
Thanks for the information on the R project. I've heard of it, but never had cause to look into it. I will now. I am absolutely amazed at what is out there, however, and I say this because I have been googling since I posted and have discovered the GNU statistical library. 1000 C routines, all written from scratch and properly documented with example code, and still seeing new releases after 10 years.
I am pretty sure that what I want will be either there or in R, so many thanks again.

I said to a friend only last week that Linux is like a hidden garden. Most people don't know that it is there, and when you do and go inside there a still a multitude of hidden treasures to discover.
Regards