Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Matlab help - alignment

  1. Oct 22, 2004 #1
    Hi all

    I'm new to matlab and am having trouble with a certain function, called score. I've looked at this for a while now and can't see where im going wrong?!

    The fucntion scores the similarities of two matrices,
    1 for a match
    -1 for a non match

    the code:

    function s = Score(x,y,d)

    % Score matirx for x and y in {1,2,3,4}
    % Mismatch penalty = d

    s = ((x==1)'*(y==1)+(x==2)'*(y==2)+(x==3)'*(y==3)...
    +(x==4)'*(y==4))*(1+d) - d;


    x = ceil(4*rand(1,5))
    y = ceil(4*rand(1,7))
    [0 y; x' Score(x,y,1)]

    ..and that error...

    ??? Error using ==> _times_transpose
    Function '*' is not defined for values of class 'logical'.

    Error in ==> C:\MATLAB6p5p1\work\Score.m
    On line 6 ==> s = ((x==1)'*(y==1)+(x==2)'*(y==2)+(x==3)'*(y==3)...

    .. i;m not sure what it is?! i'm sure its something dumb.

    Can you suggest a learning resource, my curernt approach is to go through online tutorials.

    Thanks for your time

  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Threads for Matlab help alignment Date
MATLAB MATLab: Not enough inputs for nlinfit Nov 16, 2017
MATLAB Help needed to fix a matlab code Nov 8, 2017
New to Matlab, help with vectors Feb 20, 2016
Need help with integral Dec 23, 2015
MATLAB 2D diffusion equation, need help for matlab code. Nov 7, 2015