Re: Expecting support for multiple keys

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

On Wednesday, 13 July, 2016 18:49:41 Liu Guibin wrote:
> I still expect the support for multiple keys.
> 
> Using labels is too complicated and inconvenient.
> Label is only suitable for adding text, but incapable of adding lines, 
> points, linepoints, histograms, etc.
> For example, I don't know how to use label to mimic the key in the 
> following plot statement:
> 
> plot  'data1'  t 'test1'  w p pt 7 ps 2, \
>          'data2'  t 'test2'  w l  lw 2 lt 3,\
>          'data3'  t 'test3'  w lp  lt 1 lw 2 pt 6 ps 2,\
>          'data4'  t 'test4'  w histograms
> 
> 
> 在 2015-12-11 7:43, Tait 写道:
> >> <1>.  Multiple keys
> >> ...
> >> set key 1 top right
> >> set key 2 bottom left
> >> plot 'data' key 1, '' key 1, '' key 2, '' 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.
> > Don't labels (as in, "help set label") offer a more flexible and
> > comprehensive solution to this problem?

Current cvs (version 5.1) supports individual placement of 
key items.

Demo is here:
	http://gnuplot.sourceforge.net/demo_cvs/custom_key.html

Help text is here:

gnuplot> help plot title

 By default each plot is listed in the key by the corresponding function or file
 name. You can give an explicit plot title instead using the `title` option.

 Syntax:
       title <text> | notitle [<ignored text>]
       title columnheader | title columnheader(N)
             {at {beginning|end}} {{no}enhanced}

 [...]

 The `at` keyword allows you to place the plot title somewhere outside the
 auto-generated key box. The title can be placed immediately before or after the
 line in the graph itself by using `at {beginning|end}`.  This option may be
 useful when plotting `with lines` but makes little sense for most other styles.

 To place the plot title at an arbitrary location on the page, use the form
 `at <x-position>,<y-position>`.  By default the position is interpreted in
 screen coordinates; e.g. `at 0.5, 0.5` is always the middle of the screen 
 regardless of plot axis scales or borders.  The format of titles placed in
 this way is still affected by key options.  See `set key`.

   Ethan