[Scilab-users] Plotting time (hours) in scilab

[Stefan Du Rietz]

On 2014-06-05 12:41, Stefan Du Rietz wrote:
--------------------
> On 2014-06-05 11:29, Edmund Okoroigwe wrote:
> --------------------
>> I want to plot time  (8:00,9:00,10:00,11:00, 12:00, 13:00,14:00) as
>> x-axis. How can I achieve this. The data is saved in excel file.
>> Thanks
>>
>> Edmund
>>
> Maybe like this:
>
> t = 8:14;
> a = gca();
> // Set the x-axis limits to the first and last element of t
> a.tight_limits = "on";
> a.data_bounds(:, 1) = t([1 $])';
> // Set the ticks and format the labels
> a.x_ticks = tlist(["ticks","locations","labels"], ...
>    t, msprintf("%02i:00\n", t'));
>
> Here the x-axis is scaled in hours. If you have each time (date and
> time) as a vector [year month day hour minute second] you can convert
> them with datenum() to get numbers with one day = 1.0 (and one hour =
> 1/24).  See the help on datenum() and msprintf().

Sorry, I mishandled the transpose operators!

t = (8:14)';
a = gca();
// Set the x-axis limits to the first and last element of t
a.tight_limits = "on";
a.data_bounds(:, 1) = t([1 $])';
// Set the ticks and format the labels
a.x_ticks = tlist(["ticks","locations","labels"], ...
   t, msprintf("%02i:00\n", t));

> Regards
> Stefan