Re: Tweak for interactive SVGs?

[James R. V. Z. <jr...@co...>]

Peter <pl...@pi...> writes:

> In the mean time it would be good to start defining what functionality
> to add and how to integrate this into gnuplot command structure.
>
> I would strongly recommend a well thought out and extensible structure
> because the possibilities that this kind of technique opens up are vast.
> It should be anticipated from the outset that this will develop over
> time to be a very full featured extension quite likely with the need to
> user definable elements.

I think these would be useful functions for a selected curve:

 - Toggle visibility (as Bill demonstrated).

 - Move to front/back.

 - Dim (partially desaturate, or just turn light gray) / restore.  

 - Highlight (move to front, and dim all the other curves) / restore.

 - If X2 or Y2 axes are in use, then when you select a curve, it would
   be nice to have the corresponding axes automatically highlighted.

I would also like a way to select a data point on the graph and
display information about it.  In particular:

 - The X, Y (Z, T, U, V) data value, with full precision (not
   transformed to integer screen coordinates then transformed back).
   Also DX and DY for errorbars graphs.

 - Where it came from (file name, line, index, line within index,
   etc.).  Useful for tracking down an outlier.

If there are several data points very close together (say, within an
eight pixel radius), I would like a way to cycle among them.


                - Jim Van Zandt