Logical lookup between two dates

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Richard Turner 2018-5-24

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https://ww2.mathworks.cn/matlabcentral/answers/402385-logical-lookup-between-two-dates

评论： Richard Turner 2018-5-25

I am trying to create a logical lookup between 3 date vectors. Vector a is the lookup value (a date), Vector b is a start date, c is an end date. a is a larger size than b and c, which are both the same size.

I want to return a logical response (1) when a is b<=>c.

The vector size seems to be the main problem when trying to write this. I know there is a simple way to do it, but cant find the answer.

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Jan 2018-5-24

What does "b<=>c" mean? What exactly is a "date vector"? Please provide some input data.

Richard Turner 2018-5-24

a is a 282x1 matrix containing sequential dates. b is a 50x1 matrix containing start dates. c is a 50x1 matrix containing end dates. I want to find out how many times the values in 'a' occur between a start date and end date - represented by the same row # in 'b' and 'c'. I don't have any code to share, I've tried indexing b and c using a, but I cant get anything but errors. I'm sure there is an elegant way of doing this...

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