Re: [Maxima-discuss] Is there a tool in Maxima similar to knitr in R?

[Robert D. <rob...@gm...>]

On Sat, Mar 1, 2025 at 8:28 PM Jinsong Zhao <js...@ye...> wrote:

> Also, I don't know if my code can handle the results of the different
> display methods provided by maxima. I'd actually prefer it to handle
> tex(...) result, but I don't know how to write that result to with_stdout.

I'm not sure what you mean by handling the output of tex using
with_stdout. I think with_stdout already captures output produced by
tex, e.g. with_stdout(my_output, tex(...)), so I guess you must mean
something else, but I don't know what.

I noticed in the code that there is

extract_output(code_block, stream) := block(
   file_output_append:false,
   tmp_file: sconcat(maxima_tempdir,"/tmp.out"),
   with_stdout(tmp_file, print(eval_string(code_block))),
   tmp_str: openr(tmp_file),
   while (tmp_line: readline(tmp_str)) # false do (
      printf(stream, "~a~%", tmp_line)
      ),
   close(tmp_str)
   );

and there is a comment to the effect that you would like to simplify
this code. Towards that end, you can replace the function definition
with

extract_output (code_block, stream) := with_stdout (stream, print
(eval_string (code_block))));

since with_stdout also accepts an output stream as an argument in
addition to a file name.

As you work through various issues with tex output, you might find it
helpful to look set_tex_environment and set_tex_environment_default.
There are some other TeX-related functions; ?? tex will find them (and
other functions which happen to have "tex" in their names).

Hope this helps,

Robert