I have an excel sheet with different date formats (in excel some are in General format, some in date format totally random)
example: 10/05/2005 , 10/5/2005, 10/05/05, 05/12/2005 and so on.
I read the XL file into MATLAB as follows:
[dta_num , dta_txt , dta_raw] = xlsread(...)
I need to work with the dates in the excel sheet subsequently.
I tried out the following commands
All of them return the same answer. (732590) But I realized that 732590 is read as 05-Oct-2005 when I ran
However the dates in my data sheet needs to be read as dd/mm i.e 10-May-2005.
If I choose to specify the format,
- * datenum('10/5/2005','dd/mm/yyyy') ans = 732442
- * datenum('10/05/2005','dd/mm/yyyy') ans = 732442
- * datenum('10/05/05','dd/mm/yyyy') ans = 1957
Originally I thought I will convert the dates using datenum and the after my manipulations using functions such as month(datenum(dta_txt(2,2),'dd/mm/yyyy')) I will use datestr and I will have all the dates in the same format. But now I am back to square 1 since datestr(1957) gives me a 2 digit year.
Also I want to make sure that date formats are not mixed up i.e dd/mm/yyyy and mm/dd/yyyy are mixed up. For this I plan to go over the date and see if the previous date belongs to the same month or one month earlier and no month is greater than 12 assuming a dd/mm format. If it is, then it is to be decoded as mm/dd/yyyy and appropriately changed to dd/mm/yyyy.
Is the only solution is to go over the length of the dta_txt contents using cellfun('length',dta_txt(:,2)) and change it to 4 year format (I guess there are very few in 2 year digit YY format)
To summarize my requirements are;
1. date format which takes less resource and easy to manipulate as I might want to extract and make comparisons of the the month and year later. 2. Have a consistent date format preferably dd/mm/yyyy.