How do you extract the actual name of your input variable in a function?

5 Ansichten (letzte 30 Tage)
I need to extract the actual name of my input variable for naming a file. Here is my simple script.
function bmp=array2bmp(a)
bmp=uint8(a);
nam=strcat(varname(a),'.bmp');
imwrite(bmp,nam,'bmp');
end
and varname is a function defined as such
function n=varname(var)
n=inputname(1);
end
so if I have an array named 'testbmp' and I type
bmp=array2bmp(testbmp);
My output is a .bmp file named 'a.bmp' not 'testbmp.bmp'. This does not make sense to me. Is there a way I can call the actual name of my actual input variable instead of whatever dummy variable I wrote in the function?

Akzeptierte Antwort

Geoff Hayes
Geoff Hayes am 30 Okt. 2014
Alex - it does make sense since you are passing a variable named a into your function varname. To get the variable name testbmp, you would have to call inputname(1) from the within the function that "receives" this variable as an input I.e. array2bmp.
  1 Kommentar
Alex
Alex am 30 Okt. 2014
This worked. Thank you for your detailed explanation which helped me understand the reasoning behind the problem.

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (1)

Robert Cumming
Robert Cumming am 30 Okt. 2014
can you not just do this:
function bmp=array2bmp(a)
bmp=uint8(a);
nam=strcat(inputname(1),'.bmp');
imwrite(bmp,nam,'bmp');
You dont need your sub function varname

Kategorien

Mehr zu Multidimensional Arrays finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by