Re: [Gnuplot-info] Multiple sources on a common X axis

[Hans-Bernhard B. <HBB...@t-...>]

Am 29.07.2016 um 09:12 schrieb Robert von Knobloch:

> I _think_ that I _do_ want multiplot.

Then gnuplot cannot figure out the shared axis range all by itself, like 
you said you wanted.  It's a case of either having the cake, or eating it.

The individual plots in a multiplot are done independently, so there's 
just no way for the x data range of later plots to have any influence on 
the x axis range of earlier ones, because by the time the second plot is 
made, the first one is completely done.  No going back to make its x 
axis range match the latter ones.

> I want the temperature plot to be framed in its own axes, just on the
> same page (screen), with the same x-axis (date/time) as the other data.
> My screen has then 3 (or more with each having different Y units) plots
> with their own y axes, but with the same x scale and labels, one above
> the other, so that it is easy to see correlations.

In that case you'll have to decide on an x axis range beforehand, tell 
gnuplot about your choice, fix the left and right margins, and then you 
can use
	
	set multiplot layout 3, 1

But for plots with at most two incommensurable types of y data, a 
single, multi-dataset plot with a secondary y axis will make better use 
of the available plotting surface, and allow for a much clearer view of 
correlations, and it'll be a whole lot easier to create.