How to print results from damp() to text file

I was trying to print the results from the damp() function to a text file using fprintf, but fprintf doesn't support it.

I would like to be able to maintain that same format that you see in the command window when printing it to a text file as well.

The following is a sample of what I would like to be able to output into a separate txt file

 damp(tf(1,[12 16 560 180])

[dpb]

>> which damp
'damp' not found.
>>

Might you let us know which damp function might that be?

[Albert Garcia]

it would be the damp function.

damp(tf(num,den))

You input a transfer function and get the poles, natural frequency, time constant, and damping ratio by default.

[Walter Roberson]

>> which damp
/Applications/MATLAB_R2018b.app/toolbox/shared/controllib/engine/damp.m

[Albert Garcia]

I have no idea. I'm using R2017. I think that I am using the damp(sys). I see two options, one with damp(A,ts) and another with damp(sys), and the one that shows up in command window is damp(sys). Does this answer your question?

Answer 1

[Walter Roberson]

evalc() the function to capture the text.

[Albert Garcia]

so this is one of the lines of code I want to output, and I used evalc() as such...

A=evalc(damp(tf(1,[12 16 560 180]))
Undefined function 'evalc' for input arguments of type 'double'.

Am I supposed to use it differently?

[Walter Roberson]

A=evalc('damp(tf(1,[12 16 560 180])');

Note that this will result in a character vector stored in A that will have embedded newline (\n) characters in it, but not embedded carriage returns (\r) .

[Albert Garcia]

This works great, thank you :D

Answer 2

[Thomas Marcus]

To get more accurate numbers than what is printed on screen, use [wn, zeta, p] = damp(sys) to get the arrays.