Re: [ gnuplot-Feature Requests-927249 ] Allow filledcurve color to based on whether above/below axis

[Petr M. <mi...@ph...>]

> I had in mind a further extension to allow both
> 	plot sin(x) with filledcurve below y1=f(x)
> 	plot 'data' using 1:2 with filledcurve above y1=f(x)
>
> But your suggestion above is a better idea, at least for
> the data case, because it uses existing function evaluation
> code:
> 	plot 'data' using 1:2:(f($1)) with filledcurve
>
> That leaves a few questions:
>
> Do we allow "above" and "below" in this case?

Yes

> I think it reasonable that
> 	plot 'data' using 1:2:(f($1)) with filledcurve above
> would fill only those areas where $2 > f($1)

Ys

> What exactly should be filled if f(x) is undefined at a given x?
> Or in the case of two datasets, what if one of the datasets
> has a missing value?

It should be equivalent to the case when the y-axis point (like $2 above)
data point is undefined or missing.


---
PM