Using Datetiim to produce array of time points

I'm trying to use the Datetime function to produce an array of data points to use as input to an array of impedance values to process and plot. I have entered 8 points for Year, Month, and Day. MATLAB claims this is what it wants, even while it denies the Datetime function and won't work. How can I get this data entered into numerical Year,Month, Day for plotting and analysis?

The datetime function is described here:

https://www.mathworks.com/help/matlab/ref/datetime.html

Thanks.

Sincerely,

Del Ventruella

{ >> Y=[2000;2007;2009;2011;2012;2013;2014;2015]

Y =

        2000
        2007
        2009
        2011
        2012
        2013
        2014
        2015

>> M = [2;2;2;4;8;11;12;11]

M =

     2
     2
     2
     4
     8
    11
    12
    11

>> D = [12,17,14,16,8,11,13,14]

D =

    12    17    14    16     8    11    13    14

>> X = datetime(Y,M,D) Error using datetime (line 579) Data inputs must be the same size, or any of them can be a scalar.

>> len(Y)= len(Y)= ↑ Error: Expression or statement is incomplete or incorrect.

>> length(Y)

ans =

     8

>> length(M)

ans =

     8

>> length(D)

ans =

     8

>> x = datetime(Y,M,D) Error using datetime (line 579) Data inputs must be the same size, or any of them can be a scalar. }

Answer 1

[Steven Lord]

Look at the size of the variables Y, M, and D. One of these things is not like the others. Just because two arrays have the same number of elements or the same length does not mean they have the same size. Transpose your D variable and it will work.

Answer 2

[Del Ventruella]

That's what I did. I still have a problem in that I'm trying to use the dateTime array as in input for the X-axis components of curvefit toobox. It won't recognize the dateTime array. Is there some way I can convert dateTime to an array of numbers?

Answer 3

[Del Ventruella]

Perhaps the number of days that have passed since 2000?