MATLAB: I’d like to delete 24th one of “for 1:1:30”

forfunction

Hi.
I'd like to delete 24th one of "for 1:1:30" Actually, I can run twice to simulate it as below.
for 1:1:23 and for 24:1:30
However, I'd like to do it in one loop.
I have one more question. Can you let me know a function to return number 1( or zero) when an input is negative value like -5.
a= somefuntion (-5)
ANSWER : 1 (or 0)
Thank you.
Best regards,
Jaeyoung Park

Best Answer

There are a number of different ways:
for K = 1 : 30   %#1

  if K == 24; continue; end
  ...
end
for K = setdiff(1:30,24)  %#2

  ...
end
KV = 1:30; KV(24) = [];  %#3

for K = KV
  ...
end
For your second question, again there are multiple ways:
function r = somefunction(v)  %#1
  if v < 0
    r = 1;
  else
    r = 0;
  end
end
function r = somefunction(v)  %#2
  r = 0 + (v < 0);
end
somefunction = @(v) v < 0;    %#3
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