Issue with loading datetime from table

Hi, I have a simple 3 column CSV file with column 1 = names, column 2= address column = dates. I load the CSV using readtable()

Data= readtable(‘FileMaker.csv’);
C = table2cell(data) 
Dates = C(:,3)
DateId = datetime(dates)

However I keep getting the error using datetime(639) input data must be numeric array, string array, cell array containing character vectors, or char matrix.

The cell for dates is showing up as a datetime when I look at the workspace but I’m not sure how to overcome the error message. Any help would be greatly appreciated!

[madhan ravi]

FYI , the below is not a valid MATLAB syntax

Dates = C(:,)

[Sue MM]

Typo in the question meant C(:,3)

Answer 1

[Eric Sofen]

There's no reason to go through cell to pass the datenums into datetime:

Data = readtable(‘FileMaker.csv’);
Dates = datetime(Data.Var3, 'ConvertFrom', 'datenum') % assuming default variable names in the table.

Answer 2

[Joel Handy]

There appears to be two issues with your code. The first is that datetime doesn't take a cell array of numbers so you need to convert the cell array containing datetimes to a numeric array. The second issue is that datetime needs you to explicitly tell it that you are giving it datenums. I think the following code will work for you.

Dates = [C{:,3}];
% OR
Dates = cell2mat(C(:,3));
DateId = datetime(Dates, 'ConvertFrom', 'datenum')