find the number of seconds between two times

2 次查看（过去 30 天）
captainmariah
captainmariah 2016-8-8
评论： captainmariah 2016-8-8
One time comes from a vector, date (which I only want the first date) and the other one is a string form.
time0 = datenum(date(1),'HH:MM:SS.FFF');
time1 = datenum('12:35:00','HH:MM:SS');
past_time1=etime(time1,time0);
but I get an error when I run this: Index exceeds matrix dimensions.
Error in etime (line 40)
t = 86400*(datenummx(t1(:,1:3)) - datenummx(t0(:,1:3))) + ...
Error in processdata (line 107)
past_time1=etime(time1,time0);
Why isn't this working?
date(1) contains the value '12:31:45.115'

请先登录，再回答此问题。

回答（1 个）

Adam
Adam 2016-8-8
编辑：Adam 2016-8-8
date(1) cannot contain a full string. If date is that string then date(1) is just '1'. Alternatively if date is a cell array you want data{1} instead.
Also do not call your string 'date', you are obfuscating a builtin function which may also be the cause of your error if it is being called from inside another function.
  1 个评论
captainmariah
captainmariah 2016-8-8
I think I solved the problem with 'datevec'. date(1) contains a string with format hh:mm:ss.fff.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Dates and Time 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by