Unfortunately, the layout calculations are not exposed to the end user, so
there is no direct way to associate a pixel position with a data point.
There is a global "Plot" that has the results of the layout calculations,
and you may be able to get the relevant numbers from it, e.g. the following
shows the pixel positions for the plot line:
load'plot'
plot 2 3 5
$Plot_jwplot_
11 9
_2{Plot_jwplot_
┌─┬────┬──┬─┬─┬─┬───────┬─┬───────────────────────────┐
│1│line│28│1│0│0│0 0 255│0│37 36 248.5 135.333 460 334│
└─┴────┴──┴─┴─┴─┴───────┴─┴───────────────────────────┘
Perhaps Plot should support ternary graphs. If I were doing this myself, I
might draw the graphs without using Plot.
On 22 August 2016 at 21:29, Fraser Jackson <[email protected]>
wrote:
> I have constructed a large number of ternary plots in J, but have not been
> able to find a way of labelling tic marks on the boundaries of the plot.
> All of the defaults for grids and tics are inappropriate and eliminated
> with pd 'frame 0;axes 0 0; grids 0 0;tics 0 0;labels 0 0;'. All has been
> done within Jqt.
>
> I think what I need to do is find a way of conveniently determining the
> coordinates a specified point will map to in the graphbox Gxywh. and of
> locating text relative to that point.
>
> Using the capabilities of 'plot' may not be the best tool but has worked
> well so far.
>
> Any help would be appreciated.
>
> Fraser
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
