How can I import and read a .plt file?

I am dealing with .plt files and I need to find a way for matlab to read them and put them in a matrix.

[dpb]

Well, that'll all depend on who wrote the files and what their content/format is...we have no idea where you got these from..

Along with that description, attaching one (use paperclip icon) would be a start.

[Dario Zaccagnino]

This .plt file is from the NASA CEA solver: https://cearun.grc.nasa.gov/

Here is the user data manual: https://ntrs.nasa.gov/api/citations/19960044559/downloads/19960044559.pdf

All I know is that this is a .plt file.

I tried to attach the .plt but the file type of unsupported. Here is the file contents:

# p t pip isp mach gam m

1.8000E+01 3.0124E+03 1.0000E+00 0.0000E+00 0.0000E+00 1.1883E+00 1.9553E+01

1.7791E+01 3.0095E+03 1.0118E+00 1.2275E+02 9.9542E-02 1.1884E+00 1.9554E+01

1.0092E+01 2.7606E+03 1.7836E+00 1.1839E+03 1.0000E+00 1.2012E+00 1.9671E+01

1.0000E+00 1.8073E+03 1.8000E+01 2.4110E+03 2.4771E+00 1.2491E+00 1.9812E+01

# p t pip isp mach gam m

Some potentially helpful information:

Theres 2 ways to perform this CEA solver:

1. Using the online web version
2. Using the command prompt version

I am trying to use the command prompt version so I can implement it in a matlab function. This requires me to make a text file to run the solver.

Here is a website that explains how to use the cea solver with cmd: http://akrmys.com/public/cea/cea_install_cmd.html.en and http://akrmys.com/public/cea/cea_index.html.en

Once I am in the >fcea2m "directory", I can run the input file. This input file is a .inp file type (which I can edit in notepad, AND matlab through the editor). This solver outputs in .out and .plt (what I want) file types.

I hope this helps.

Answer 1

[dpb]

That's essentially trivial since they're just text files -- to upload one, just rename it ".txt" temporarily; what the name is doesn't matter a lick...

data=readmatrix('yourfile.plt','commentstyle','#');

will give you all the data in an array -- you can separate by what appears to be four rows/section.

Or

data=readlines('yourfile.plt');

will leave you with a string array including the comment lines; you can locate those and then convert the sections between to numeric to keep the sections separate.