问题
I have a plot like this using wgnuplot:
the green and blue are on y2 axis.
Question 1:
When I zoom using right mouse button I get:
The black line on yaxis is to compressed near top. How can I get the y scale to fit the data for this window at this point AUTOMATICALLY. I.e.e without me having to type range commands?
Questions 2:
Again, is there anyway to rescale/zoom the y2axis ALONE, by mouse?
回答1:
Just press 'a' or click the autoscale button to adjust the y-scale. Maybe you want to use set autoscale xfix before that.
Its not by mouse, but you can use the bind command to rescale only the y2-axis with the hotkeys 'alt-z' and 'alt-y':
bind 'alt-z' 'set y2range[GPVAL_Y2_MIN*2:GPVAL_Y2_MAX*2]; replot'
bind 'alt-y' 'set y2range[GPVAL_Y2_MIN*0.5:GPVAL_Y2_MAX*0.5]; replot'
来源：https://stackoverflow.com/questions/20423794/gnuplot-how-to-zoom-y-y2-axis