How to write an array into a text file in maxima?

Question

I am relatively new to maxima. I want to know how to write an array into a text file using maxima.

Answer 1

I know it's late in the game for the original post, but I'll leave this here in case someone finds it in a search.

Let A be a Lisp array, Maxima array, matrix, list, or nested list. Then:

write_data (A, "some_file.data");

Let S be an ouput stream (created by openw or opena). Then:

write_data (A, S);

Entering ?? numericalio at the input prompt, or ?? write_ or ?? read_, will show some info about this function and related ones.

Answer 2

I've never used maxima (or even heard of it), but a little Google searching out of curiousity turned up this: http://arachnoid.com/maxima/files_functions.html

From what I can gather, you should be able to do something like this:

stringout("my_new_file.txt",values);

It says the second parameter to the stringout function can be one or more of these:

• input: all user entries since the beginning of the session.
• values: all user variable and array assignments.
• functions: all user-defined functions (including functions defined within any loaded packages).
• all: all of the above. Such a list is normally useful only for editing and extraction of useful sections.

So by passing values it should save your array assignments to file.