Error using stem (line 44) X must be same length as Y while using eigen values.

Hello, i am trying to recognize the characters using eigen values concept, but im getting the following error.

Error using stem (line 44) X must be same length as Y.

Error in recognition_e (line 205) stem(ll,InImWeight)

Please find my attached code and help to solve this issue.(i have 7 input images) here are the input images

first image

second one :

third one:

fourth one:

fifth one:

sixth one:

seventh one:

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/matlab_prog/debugging-process-and-features.html