MATLAB exponent problem

  1. I am trying to do a very simple problem on MATLAB, but I do not know much about MATLAB so this is challenging. Here is the code:

    Code (Text):

    y=0:50:300;
    D=0.210;          % D is the mean sediment diameter
    w=14*D^(1.1);     % w is the particle fall speed
    A=0.067*w^(0.44); % A is the sediment parameter
    h=A*y^(2/3);      % h is the shoreline depth under water
    plot (y,h);
     
    What I would like to happen is produce a graph of h=1.005*y^(2/3) with coordinates of h from 0 to 5 in increments of 0.5 and coordinates of y from 0 to 300 in increments of 50. The error I get is:

    ??? Error using ==> mpower
    Inputs must be a scalar and a square matrix.

    Error in ==> beachprof at 5
    h=A*y^(2/3); % h is the shoreline depth under water


    What is going on here and how can I fix it?
     
  2. jcsd
  3. Your problem is in this line:

    Code (Text):

    h=A*y^(2/3);
     
    What you want is:

    Code (Text):

    h=A*y.^(2/3);
     
    To understand the difference, read the docs:

    Code (Text):

    doc mpower
    doc power
     
     
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