Date numbers in double to datestring matrix

Question

Evan Watts 2018-4-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397369-date-numbers-in-double-to-datestring-matrix

评论： Peter Perkins 2018-4-26

I have a 31x3 double with the first column being date serial numbers from low to high, and the next 2 columns being X an Y. I would simply like to create a matrix that is more user friendly, so that someone can click on it and see actual date strings corresponding with the X and Y values. Is there any effective way of doing this? I have been battling with datestr, as it doesn't like putting things back into a double. Thoughts?

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。

Answer 1

njj1 2018-4-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397369-date-numbers-in-double-to-datestring-matrix#answer_317184

在 MATLAB Online 中打开

You cannot put date strings and numerical data into a single matrix. You could use a cell if you wanted. For example:

X_new{1,1} = datestr(X_old(:,1)); %first cell array is the date strings
X_new{1,2} = X_old(:,2:end); %second cell is the X,Y data matrix

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Peter Perkins 2018-4-26

You will be much happier with a table or (in R2016b or later) a timetable than with a cell array. You'll also be happier if you use datetimes rather than datenums and datestrs.

请先登录，再进行评论。

Answer 2

Steven Lord 2018-4-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397369-date-numbers-in-double-to-datestring-matrix#answer_317186

If you're using release R2016b or later, consider representing your times as a datetime vector and storing your data in a timetable with that datetime vector as its time vector.