Library for data storage and analysis

Question

So, I have this program that collects a bunch of interesting data. I want to have a library that I can use to sort this data into columns and rows (or similar), save it to a file, and then use some other program (like OpenOffice Spreadsheet, or MATLAB since I own it, or maybe some other spreadsheet/database grapher that I don't know of) to analyse and graph the data however I want. I prefer this library to be open source, but it's not really a requirement.

Answer 1

Ok so my mistake, you wanted a writer. Writing a CSV is simple and apparently reading them into matlab is simple too.

http://www.mathworks.com.au/help/techdoc/ref/csvread.html

A CSV has a simple structure. For each row you seperate by newline. and each column is seperated by a comma.

0,10,15,12
4,7,0,3

So all you really need to do is grab your data, seperate it by rows then write a line out with each column seperated by a comma.

If you need a code example I can edit again but this shouldn't be too difficult.