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Matlab beginner needs help

  1. Apr 9, 2010 #1
    dear all, i am matlab new user and i have some problems about it.

    I generated a code as below:

    function data = findtext(redc,greenc,bluec)
    txt=0;
    if bitand(redc,4)== 4
    txt=bitor(txt,128);
    end
    if bitand(redc,2)== 2
    txt=bitor(txt,64);
    end
    if bitand(redc,1)== 1
    txt=bitor(txt,32);
    end
    if bitand(greenc,4)== 4
    txt=bitor(txt,16);
    end
    if bitand(greenc,2)== 2
    txt=bitor(txt,8);
    end
    if bitand(greenc,1)== 1
    txt=bitor(txt,4);
    end
    if bitand(bluec,2)== 2
    txt=bitor(txt,2);
    end
    if bitand(bluec,1)== 1
    txt=bitor(txt,1);
    end
    data=txt;
    return

    I save it as findtext.m file but i get the error as below:

    ??? Input argument "redc" is undefined.

    Error in ==> findtext at 3
    if bitand(redc,4)== 4

    could anyone help to answer my question ? how to solve my problem ?

    thanks so much
     
  2. jcsd
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