[cl-pdf-devel] Adding options to x-axis

[Marc Battyani]

"Jonathon McKitrick" <jcm at FreeBSD-uk.eu.org> wrote:

> There are 3 features I was wondering about.  Either I could try to subclass
> and add them myself, or I could see if they are hidden somewhere I've missed
> or even being implemented right now.
>
> 1.  Text labels rather than numbers for x-axis
> 2.  Vertical lines on chart for x-axis.
> 3.  Exact length for x-axis, rather than rounding.
>
> I have a chart showing the values of 21 characteristics.  I need to label the
> axis with the characteristic abbreviations, and I'd like the axis to end with
> the last one, rather than round up to 25.
>
> Is this possible at the moment, or should I subclass and add an :after?

For 1, use a format string with the Tilde Slash directive:
http://www.lisp.org/HyperSpec/Body/sec_22-3-5-4.html

For 2, use pre-draw-chart-fn of post-draw-chart-fn to draw before or after the chart.

For 3 you will have to change some code.

Marc