simple math on fityk

[Nader Amadeu]

Hi,    I am new to fityk!

Wanna restric plot range, need to set values first. Pls correct this:

$signal_starts = -100

$signal_ends =  100

# now add margins left and right from signal in the plot

$margin = 0.2 * ( $signal_ends - $signal_starts)

$plot_starts = min (X,  ($signal_starts - $margin)  )

$plot_ends = max (X,  ($signal_starts + $margin)  )

.... SXNTAX ERROR on last 2 commands

How would you do that?

Thanks!

Fityk 1.2.3 on Linux (debian repo)