How do i get Char into Double

Hello,

Does anyone know how i get timeinformation saved as a char into a double? I want to plot something over a time (HH:MM:SS) i got the information as a Workspace variable but as a class. I need it as an double to plot it.

thanks

Answer 1

[Image Analyst]

Use datenum(). From the help:

format long
t = [datetime('now');datetime('tomorrow')]
DateNumber = datenum(t)

t = 

     07-Jan-2016 15:42:14
     08-Jan-2016 00:00:00

DateNumber =

     1.0e+05 *

     7.363366543368312
     7.363370000000000

[Jelthe]

Ok so i do have the timeinformation in decimalform then. How do i get it back into timeform when i plot it? so that the x-axes says 16:40 ....

[Image Analyst]

You can make the tick marks whatever list of strings you want:

ax = gca;
ax.XTickLabel = yourCellArrayOfTimeStrings;

Example from the help:

ax.XTickLabel = {'-3\pi','-2\pi','-\pi','0','\pi','2\pi','3\pi'};

Answer 2

[Ilham Hardy]

Maybe this will help? str2num