importing excel file time format

suppose the following cell array being imported from the excel file
'Date' 'Time'
'Date' 'Time'
'Mon, Apr-25-16' 0.0763888888888889
NaN NaN
'Mon, Apr-25-16' 0.0763888888888889
'Fri, Mar-25-16' 0.0347222222222222
'Wed, Feb-24-16' 0.0347222222222222
'Tue, Jan-26-16' 0.0347222222222222
'Fri, Dec-25-15' 0.0347222222222222
'Wed, Nov-25-15' 0.0347222222222222
Column two represents time. in the originally excel file it looks like this.
Date Time
Date Time
Mon, Apr-25-16 01:50
Thu, May-26-16 01:50
Mon, Apr-25-16 01:50
Fri, Mar-25-16 00:50
Wed, Feb-24-16 00:50
Tue, Jan-26-16 00:50
Fri, Dec-25-15 00:50
Wed, Nov-25-15 00:50
How can I convert the column 2 into the original time format. Once I have the original time format I want to convert the time into minutes the following way:
Y(:,2)= hour(numFormat)*60 + minute(numFormat);

1 Commento

Could you attach a sample file? Doing this right might depend on exactly how the data is stored.
Also, which MATLAB version are you using, and which operating system?

Accedi per commentare.

 Risposta accettata

In R2014b or later, assuming you have a cell array of strings for the date and a vector of doubles for the time,
>> datetime({'Mon, Apr-25-16';'Fri, Mar-25-16'},'InputFormat','eee, MMM-dd-yy') ...
+ days([0.0763888888888889;0.0347222222222222])
ans =
2×1 datetime array
25-Apr-2016 01:50:00
25-Mar-2016 00:49:59

Più risposte (4)

AA
AA il 1 Nov 2016
Modificato: Walter Roberson il 1 Nov 2016
matlabtime=[datestr(numOnly(:,1),'HH:MM')];
that gives me a char file.
i cannot convert it using the formula below.
numFormat = datenum(X{:,1},'yyyymmdd HHMMSS');
Y(:,1)= floor(numFormat);
Y(:,2)= hour(numFormat)*60 + minute(numFormat);
Y(:,3:6)= x{:,2:5};
AA
AA il 2 Nov 2016

0 voti

Can anyone help me?
AA
AA il 2 Nov 2016
I have attached a sample. when I import the file then i get decimals instead of time numbers hh:mm. My purpose is to convert the time into minutes.
numFormat = datenum(sample{:,1},'HHMMSS');
Y(:,1)= floor(numFormat);
Y(:,2)= hour(numFormat)*60 + minute(numFormat);
Y(:,3:6)= x{:,2:5};

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