trying to compare between matrixes

[EDIT: 20110512 23:42 CDT - incorporate duplicate post - WDR]

hello!!!

I'm trying to compare between 2 matrices the first matrix is 8X4 so there is 8 users that gets a random variables '0' or '1' so I'm trying to compare all the lines to the maximum combinations (2^4)

this is part of my program but its doesn't running i would like to read yours comments about it and maybe someone can help me to solve this problem

thank u very much!

this is the program (i wrote only 2 lines of the compare but i might sure u understand the idea... :D ) and as u can see if the compare is right then C will get some number if not it will jump to the other line

clear all
for i=1:4 %data
for q=1:8 %users

      a=rand(q,i)

      if (a(i) <=0.5)
          b(q,i)=0
      else 
        if( a(i) >0.5)  
              b(q,i)=1
        end
      end
  end
  end

for  q=1:8
 if  b(q,1:4)~={[0,0,0,1]|[0,0,1,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(0,1)
 else 
     if  b(q,1:4)~={[0,0,0,0]|[0,0,1,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(pi/8,1)

EDITOR: the duplicate post expanded the "if" cascade to:

for  q=1:8
 if  b(q,1:4)~={[0,0,0,1]|[0,0,1,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(0,1)
 else 
     if  b(q,1:4)~={[0,0,0,0]|[0,0,1,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(pi/8,1)
     else
         if  b(q,1:4)~={[0,0,0,1]|[0,0,0,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(2*pi/8,1)
         else
             if  b(q,1:4)~={[0,0,0,1]|[0,0,1,0]|[0,0,0,0]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[1,1,1,1]}
          c=pol2cart(3*pi/8,1)
             else.
.
.
.
.
.
 [1,1,0,0]|[1,1,0,1]|[0,0,0,0]|[1,1,1,1]}
          c=pol2cart(14*pi/8,1)
                                                          else
                                                              if b(q,1:4)~={[0,0,0,1]|[0,0,1,0]|[0,0,1,1]|[0,1,0,0]|[0,1,0,1]|[0,1,1,0]|[0,1,1,1]|[1,0,0,0]|[1,0,0,1]|[1,0,1,0]|[1,0,1,1]
              [1,1,0,0]|[1,1,0,1]|[1,1,1,0]|[0,0,0,0]}
          c=pol2cart(15*pi/8,1)
                                                              end
                                                          end 
                                                      end

Answer 1

[bym]

I don't think you are initializing 'a' properly. Try this:

a=rand(8,4);
a(a<=.5)=0;
a(a>.5)=1;

Answer 2

[Walter Roberson]

Comparing a numeric array to a cell array will give you an error. You need something like,

if ismember(b(q,1:4), [0,0,0,1;0,0,1,0;0,0,1,1;0,1,0,0;0,1,0,1;0,1,1,0;0,1,1,1;1,0,0,0;1,0,0,1;1,0,1,0;1,0,1,1;1,1,0,0;1,1,0,1;1,1,1,0;1,1,1,1], 'rows')

[itsik]

thank u for your answer

but what "is member" and 'rows' means in this program?

i try to take random matrix 8X4 and to search for any line 1:8 to see where to find the same line on all the 16 options of lines

like

0000=1

0001=2

0010=3

0011=4

0100=5

,

,

,

1111=16

so i need to find in my random matrix the spacific number 1:16 from all the options

thank u!

[Walter Roberson]

F = [0, pi/8, .....] %appropriate values for other combinations

a = rand(8,4) > 0.5;

c = pol2cart(F(1+ sum(bsxfun(@times,a,[8 4 2 1]),2)), ones(size(a,1),1));

[Walter Roberson]

Looking at your other post for the values you wish to use, the code reduces to

a = rand(8,4) > 0.5;

c = pol2cart(Pi/8 * sum(bsxfun(@times,a,[8 4 2 1]),2), ones(size(a,1),1));

[Walter Roberson]

As to what ismember() and rows means in context, here is the link to the documentation: http://www.mathworks.com/help/techdoc/ref/ismember.html