use subplot for ploting multiple graph in matlab

Question

i can't understand what is reason for following error?here is given code

for i=1:20 
      x(i) = i-10; 
      squared(i) = x(i) ^ 2; 
      cube(i) = x(i) ^ 3; 
      linear(i) = x(i); 
      log_of(i) = log(x(i)); 
      sqrt_of(i) = sqrt(x(i)); 
    end 
    subplot(2,3,1); 
    plot(x,squared); 
    title('square'); 

        subplot(2,3,4); 
    plot(sqrt_of,cube); 
    title('sqrt'); 

    subplot(2,3,5); 
    plot(linear,cube); 
    title('linear'); 

    subplot(2,3,6); 
    plot(log_of,cube); 
    title('log'); 


    subplot(2,3,3); 
    plot(x,cube); 
    title('cube');

and error says

subplot1
Attempt to execute SCRIPT subplot as a function:
C:\Users\D.Datuashvili\Desktop\subplot.m

Error in subplot1 (line 9)
    subplot(2,3,1);

it seems everything ok in code, but why is following error?could you help me? EDITED:

for i=1:20 
      x(i) = i-10; 
      squared(i) = x(i).^ 2; 
      cube(i) = x(i).^ 3; 
      linear(i) = x(i); 
      log_of(i) = log(x(i)); 
      sqrt_of(i) = sqrt(x(i)); 
    end 
    subplot(2,3,1); 
    plot(x,squared); 
    title('square'); 

        subplot(2,3,4); 
    plot(sqrt_of,cube); 
    title('sqrt'); 

    subplot(2,3,5); 
    plot(linear,cube); 
    title('linear'); 

    subplot(2,3,6); 
    plot(log_of,cube); 
    title('log'); 


    subplot(2,3,3); 
    plot(x,cube); 
    title('cube');

error:

 subplot1
Error using plot
Vectors must be the same lengths.

Error in subplot1 (line 10)
    plot(x,squared);

fatihk · Accepted Answer · 2013-04-10 12:27:57Z

3

Probably there is a file named subplot in your workspace

answered Apr 10, 2013 at 12:27

fatihk

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6 Comments

fatihk Over a year ago

what is C:\Users\D.Datuashvili\Desktop\subplot.m ? is it matlab's own function or your file?

user466534 Over a year ago

i have changed directory now,but whenever i run it shows me only one figure

user466534 Over a year ago

it says that vector should be same length,i have done some changes, and upload now

fatihk Over a year ago

x and squared arrays have different lengths, you can try clearing those variables by adding clear all to the begining of the m file

user466534 Over a year ago

now it works,thanks a lot,so it is better to use clear all always when writing M-file?

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Arkadi Sim · Accepted Answer · 2013-05-15 12:03:55Z

0

As noted above, the first error most comes from your file C:\Users\D.Datuashvili\Desktop\subplot.m which shadows the Matlab default.

the second error comes from the fact that the length of array squared is longer, probably because you changed it earlier.

just add the following line before your script and it will be fine

 clear squared cube linear log-of sqrt_of

answered May 15, 2013 at 12:03

Arkadi Sim

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