MATLAB: Assigning values to vector

assignmentcriteriavaluesvector

Hi everyone,
I have a vector A containing a range of values
A = [   0  25  50  75 100 125 150 ]
and I want to assign values to a second vector B with the same size than A, depending on the following criteria:
% B(i) = 1  for         A(i) <= 50
% B(i) = 2  for   50 <  A(i) <= 100
% B(i) = 3  for  100 <  A(i)
these are stored in the variables X and Y:
X = [     1     2     3     ] % values to be assigned to B
Y = [   0    50   100   inf ] % range limits for X
the result should be:
A = [   0  25  50  75 100 125 150 ]
B = [   1   1   1   2   2   3   3 ]
Is there any short way to do this?

Best Answer

Read about discretize. It does exactly what you want.
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