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How to selected a variable point on the y-axis?

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Sam
Sam 2014-12-22
关闭： MATLAB Answer Bot 2021-8-20
I've got 5 subjects who walk up the stairs. And I want to select the starting point for each subject. The starting point on the y-axis. The y-axis gives the distance. (look figure).

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回答（2 个）

Joseph Cheng
Joseph Cheng 2014-12-22
well there isn't a figure in your question. But a quick assessment would say you have some equation that would be distance = stair climb rate * time + constant. where your constant would be the initial stair position. you can use the rand() or randi() functions to generate your starting points
Image Analyst
Image Analyst 2014-12-22
How about using ginput() to let the user specify the starting points?
  2 个评论
Sam
Sam 2014-12-22
I used ginput to select 2 datapoints. But the problem is that there are 5 subjects which each are measured minimum 4 times... So that are 20 figures... That a lot of clicking for the user. So I was looking for solutions to select datapoints without using ginput().
Image Analyst
Image Analyst 2014-12-22
Hard to say since you're making us work blind. Maybe just select 2 and put the remaining three on a line extrapolated from the first two????

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