conver catagorical to juliandate

Hi, I just want to change catagorical data to julidandate

but I can not do that process right away

so i convert to categorical to double but answer is not i expected

what's mean 66? and how can i change juliandate

Thanks!

>> time1=table2array(time1);
>> time2=double(time1);

Answer 1

[Stephen23]

C = categorical({'2021-08-22','2021-08-21','2021-08-23','2021-08-22'})

C = 1×4 categorical array
     2021-08-22      2021-08-21      2021-08-23      2021-08-22 

double(C) % get the category indices

ans = 1×4

2 1 3 2

S = string(C) % get the category values

S = 1×4 string array
    "2021-08-22"    "2021-08-21"    "2021-08-23"    "2021-08-22"

D = datetime(S);
J = juliandate(D)

J = 1×4

1.0e+06 * 2.4594 2.4594 2.4594 2.4594

[il147]

thanks! but I don't know why 66 come out

[il147]

Oh, I did it!!!! really thank you

have a nice day!