How can the data point, where values start to increase for the first time in a data, be found, as this increase continues at the following 30 values?

1 次查看（过去 30 天）

Canan Yuksel 2021-5-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/826095-how-can-the-data-point-where-values-start-to-increase-for-the-first-time-in-a-data-be-found-as-th

评论： Canan Yuksel 2021-5-11

Hi,

I have 1*1630 data. I want to find the first data point where the values in this data start to increase. However, to accept this as the value I am looking for, this increase should continue in the next 30 values after the first increase.

How do I find this data point? Can you help me with that, please?

Regards

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Matt J 2021-5-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/826095-how-can-the-data-point-where-values-start-to-increase-for-the-first-time-in-a-data-be-found-as-th#answer_695845

编辑：Matt J 2021-5-10

在 MATLAB Online 中打开

This uses the File Exchange contributions groupTrue and groupFcn (Download):

G=groupTrue( diff(data)>0 );
g=find(  groupFcn(@numel,G,G)>=30 , 1);
if isempty(g), error 'No increasing region of length 30 found'; end
start=find( G==g , 1)