[R] filled plot symbols

[Bill Simpson]

On Wed, 18 Oct 2000, Ross Ihaka wrote:

> The present plotting symbols resulted in a haphazard way.  The initial
> few provide compatibility with S, and the filled ones were added as an
> experiment.  I think that the filled symbols are a good idea, but
> there needed to be a more systematic implementation (and the ability
> for users to add their own glyphs).
This sounds great. Wouldn't a simpler set-up have a few basic
symbols (circle, square etc) and then you specify if you want it filled
with white, black etc? Therefore we'd have something like

fillable/opaque symbols
(when using these specify bg, will default to white)
-----------------------------------------------------
0 square
1 circle
2 triangle up
move + (old 3) and X (old 4) which are unfillable
3 diamond
4 triangle down

unfillable/transparent symbols
------------------------------
5 +
6 x
7 square and x
8 + and x
9 + and diamond
10 + and circle
11 triangle up and down
12 circle and x
13 square and +
14 square and triangle up

end (omit the rest of current symbols)

> Reworking the graphics is going to be the major focus of what I'm going
> to be doing over this (southern) summer.  Plotting symbols will be part
> of this.  I want to take a close look at legend/key as well.
Great!
 
> One way of not having lines pass through the plotting points is to use
> type="b" (both lines and points).
> 
> This does leave a gap around the symbols which may be not what you want.
I (and journals I publish in) don't like this style.

Bill

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