mon
Posts:
46
Registered:
12/6/04
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Computation concerning 2-D arrays not compiling
Posted:
Oct 20, 2012 7:18 AM
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time_max = 20;
timestep = 0.1;
t = 0:timestep:time_max-timestep;
x = zeros(10,size(t));
for i=1:1:time_max/timestep
for index=1:1:20
Input = I(index);
if (i>(1/timestep))
Input=0;
end
w = x(index,i+1);
signal = 0;
for k=1:1:10
if (k ~= index)
signal = signal + x(k,i);
end
end
x(index,i+1) = -A*x(index,i)+(B-x(index,i))*(w+I)-x(index,i)*signal;
end
end
%plot(t,x(1,:))
%plot(t,x(2,:))
%plot(t,x(3,:))
Hey I'm writing this code and it won't compile correctly and I have no idea why. The basis of this code (in case it helps) is that there are ten columns to x with #rows=time/timestep. The loops go through each column for a row to compute a certain value and then move on to the next row. Also I is a 1-D array of size 10 with constants.
First there is a warning concerning the initialization x = zeros(10,size(t)); -- " Input arguments must be scalar."
Secondly, what I'm really concerned about, is that there is an error concerning the line x(index,i+1) = -A*x(....
which says -- " Undefined function 'plus' for input arguments of type 'cell' "
Anybody have some idea why this is happening? Thanks, in advance.
PS: First post, so not sure if this kind of 'debugging' posts is ok
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