how to reject of the next value less than the previous one

Question

Offroad Jeep 2016-10-23

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回答： Image Analyst 2016-10-23

Hi to all the Matlab users, I have made a program in which I want to accept the value in a loop which is less than the previous one. Kindly advise. e.g. if first value at the start of the loop is 10 then next value comes 10.3 next 9.6..... I want that 10.3 should be rejected and 9.6 gets accepted and so on......... Kindly suggest..... Regards.....

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Answer 1

michio 2016-10-23

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Not sure what you mean by reject, but will the following be of any help?

 x=10;
 while true
   newvalue = 20*rand;
   if newvalue > x
     x = newvalue;
   end
 end

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Answer 2

Image Analyst 2016-10-23

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You can try this:

value = 10;
oldValue = value;
maxIterations = 1000; % Failsafe
iteration = 1;
while value >= oldValue && iteration <= maxIterations
  value = value + rand - 0.5 % Whatever...however you calculate a new value.
  iteration = iteration + 1;
  if value < oldValue
    break;
  end
  oldValue = value;
end