Re: [Gnuplot-info] How to plot as function of weekday?

[BBands <bb...@gm...>]

Does this help?

https://stackoverflow.com/questions/17791828/gnuplot-date-time-in-x-axis

    John
On Fri, Oct 12, 2018 at 12:00 PM theozh <th...@gm...> wrote:
>
> Hello,
> is there a way to plot as function of the weekday or as function of weekday+daytime?
>
> I can plot as function of day and as function of daytime, but haven't yet found a way for weekday or weekday+daytime.
> Probably, I have to define a function to convert weekday into a number from 0 to 6 (or 1 to 7) and add the daytime as a fraction? Or maybe I overlooked a simple, obvious way?
> In the below example I get "warning: Bad time format in string". Could this be a conflict with locale/language settings?
>
> Thank you for hints.
> Theo.
>
> The following code should illustrate for testing purpose.
>
> ### plot as a function of weekday
> # generate some random test data
> set print $BirthData
> do for [i=1:100] {
>         RandomDate = rand(0)*1.5e9
>         RandomNumber = rand(0)*100
>         print(strftime("%a %d.%m.%Y %H:%M:%S", RandomDate)." ".sprintf("%g",RandomNumber))
> }
> set print
> print $BirthData
>
> set multiplot layout 3,1
>
> set xdata time
> set format x "%Y"
> plot $BirthData u (timecolumn(2,"%d.%m.%Y")):4
>
> set format x "%H:%M"
> plot $BirthData u (timecolumn(3,"%H:%M")):4
>
> set format x "%a"
> plot $BirthData u (timecolumn(1,"%a")):4    # does not work! "warning: Bad time format in string"
>
> unset multiplot
> ### end of code
>
>
>
>
>
>
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