MATLAB: IF argument question I am seriously new to coding.

if statement

Ok, Im trying to output c1 for x from 0 to 10. Im looking for it to return c1=0 0 0 0 0 0 0 0 1 2 but it keeps giving me c1=-8 -7 -6 -5 -4 -3 -2 -1 0 1 2

if the function c is less than zero I am trying to tell it to make c1=0, and if c is greater than zero to make c1 whatever c would be.

function beam_displac(x)
L=0:x
c=(L-8)
if c <= 0
    c1= 0
else c1=c
end

What am I doing wrong? How might I do this? Thanks

Best Answer

You mean like this:

c1 = max(0,x-8)

???

Related Solutions

MATLAB: How to modify a matrix to change the entries >=0 and multiply it by 5 AND to change the entries <0 and add 2 to those entries

Start with "If an entry in B is greater than or equal to zero": You can either run a loop over all elements of B or use "logical indexing":

% Linear indexing:
for k = 1:numel(B)
   if B(k) >= 0
     ...
   end
end

Or two indices for rows and columns:

for r = 1:size(B, 2)
  for c = 1:size(B, 1)
    if B(r, c) >= 0
       ...
    end
  end
end

Or "logical indexing":

index = (B >= 0);
disp(B(index))

Now try to use this to modify B. Use the mentioned terms to search in the documentation and in the internet.

MATLAB: Curve fitting with an if statement

y = @(x) ((a0*(1-exp(-b0*(x-c0)))).*(x>=c0)) + ((a1*(1-exp(-b1*(x-c1)))).*(x>=c1))

Best Answer

Related Solutions

MATLAB: How to modify a matrix to change the entries >=0 and multiply it by 5 AND to change the entries <0 and add 2 to those entries

MATLAB: Curve fitting with an if statement

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