Re: Plans for gnuplot version 5

[Ethan A M. <sf...@us...>]

On Wednesday, 05 March, 2014 19:18:24 Liu Guibin wrote:
> I expect that gnuplot can have the following several functions:
[multiple keys]
[multiple files in the same using spec]
[arrays]
[control over dashed lines]

In general adding a new feature does not break older scripts or familiar usage.
So in general a new feature can be added at any time; it does not need to 
wait for a transition from one major release to the next, in this case version 4
to version 5. 

The four features you mention are reasonable suggestions.
That does not mean that it would be easy to implement, but if someone
someone contributes code for any or all of them I don't see any
obvious reason why they couldn't be added  when ready without breaking
backward compatibility.

Two of these, more control over key placement and multiple files contributing
to a single plot, are already tracked in the Feature Requests section on
the project development site on SourceForge.  The other two, arrays and
dashed lines, have been discussed on the mailing list but I do not see
Feature Request entries for them.  Feel free to add them.

	Ethan




> 
> <1>.
> 
> I expect that the keys (legends) can be manipulated in groups in stead 
> of as a whole objects.
> 
> e.g.
> 
> set key 1 top right
> set key 2 bottom left
> plot 'data' t 't1a' key 1, '' t 't1b' key 1, '' t 't2a' key 2, '' t 
> 't2b' key 2
> 
> Thus, if I have many legends and there's no space to put them together, 
> I can divide them into two groups
> "key 1" and "key 2" and put them at different places.
> 
> 
> <2>.
> 
> Columns from different files can be calculated together. e.g. I have two 
> files that have the same format, say, 100 row of (x, y) data, named 
> 'file1' and 'file2'. Now I want to plot the different between y columns 
> from the two files.
> 
> plot 'file1' u 1:($2-column('file2',2)) w lp
> 
> 
> <3>.
> 
> I expect gnuplot to have arrays.
> 
> 
> <4>.
> 
> I want to set the style of dashed line, that is, how dashed the line is.
> e.g. - - - - or - - - - or -- -- -- ....
> 
> 
> 
> gbliu
> 
> 
> 于 2014-03-05 12:51, sfeam 写道:
> > Important note:  If there is some behaviour or syntax in gnuplot
> > that has been annoying you for the last 20 years, please speak up.
> > This is the best chance you will have to get it changed!
> 
> 
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