How to extracy table rows by date?

How can one extract table rows by unique dates? If there is a data set where the first column is the date (MM/dd/yyyy), can one create a matrix with unique dates and then extract for each only the rows containing that date?

ExpirationDates = quotedata(:,1); %extract expiration dates

uniqueDates = unique(ExpirationDates); %build expiration dates table

quotedata = table2timetable(quotedata);

for k=1:height(uniqueDates)

thisDate = (uniqueDates(k,:));

indexesWithThisDate = (ExpirationDates == thisDate);

% Extract all rows with this date and put into a cell array.

theseData = array(indexesWithThisDate, 12); % Get col 12

% Assign to a new cell

ca{k} = theseData;

end

I get the following error message:

"Undefined operator '==' for input arguments of type 'table'.

Error in QuotesProcessor (line 13)

indexesWithThisDate = (ExpirationDates == thisDate);"

Answer 1

[Peter Perkins]

Looking at your code, you seem to be creating a timetable with no data, just row times. That doesn't seem useful. But then "array" is, maybe, a table or something with data? This doesn't seem the right way to go about things.

The answer to your specific question is, (ExpirationDates.Time == thisDate). But there have to be better ways to go about whatever it is you are doing.