calculating most days with gain

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John Jamison 2017-2-18

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关闭： MATLAB Answer Bot 2021-8-20

Screen Shot 2017-02-17 at 7.47.58 PM.png

Hi,

I am having some trouble calculating this...I am started with a for loop, iterating over 1:length of my data set, put don't know where to go to get the setup for tracking streaks and days in a row for gains...please help.

THANKS

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Answer 1

Walter Roberson 2017-2-18

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在 MATLAB Online 中打开

mask = [0,closing > opening,0];

Now have a look at

find(mask(1:end-1) & ~mask(2:end))

This tells you about the end of streaks. You can likewise find the beginning of streaks. Each beginning has an end. You can figure out lengths by matching positions

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John Jamison 2017-2-18

how does this help with the problem I attached above? where would i enter this

Walter Roberson 2017-2-18

Your task does not depend on how much gain is made, just that some gain is made. So you can calculate a vector of 1 (gain made) and 0 (not a gain ) and now the task is to find the place with the greatest streak of 1s.