Simple Matrix Looping Problem

Hello everyone,

I have a matrix:

B = zeros(10, 2);

B =

     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0

I want to fill the matrix with values in order:

%step 1 value = 15.654

B =

   15.654     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0

%step 2 value = 16.378

B =

   15.654     16.378
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0

%step 3 value = 17.478

B =

   15.654     16.378
   17.478     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0
     0     0

and so on until the matrix is full. Value is updated in a pushbutton callback. I know obviously that I have to loop through the matrix i'm just not sure of the exact syntax necessarily to step through each element in that order.

Thanks in advance!

Answer 1

[bym]

you can transpose B and then loop through and fill in values then transpose back

B = zeros(2,10)
for k = 1:20
%update value here
end
B = B.'

[B_Richardson]

what does the last line do?

B = B.'

And I'm not familiar with the term "transpose?"

[Fangjun Jiang]

try this to understand it.

a=1:3

b=a'

or b=a.'