Ed -
the following is rather crude but may be good enough for your purposes. The
basic assumption
I make is that the plot window is 1000 by 1000 units and I scale everything
accordingly. In the
example that follows, I'm trying to label the high and low points as well as
a line representing
the mean.
pd 'reset'
rr=. _100+50?201 NB. Random points to plot
whhl=. rr i. (>./,<./)rr NB. Find highest and lowest and
rr=. (10 _10+whhl{rr) whhl}rr NB. exaggerate each to stand out
'hp lp'=. (>./,<./)rr NB. High and Low points to label
xhi=. ":<.0.5+(1000*(#rr)%~rr i. hp) NB. Estimate x-position of high
yhi=. ":1000-50 NB. Guess near top
xlow=. ":<.0.5+1000*(#rr)%~rr i. lp NB. Estimate x-position of low
ylow=. ":50 NB. Guess near bottom
NB. Place text for high point:
pd 'textfont Courier 12 Bold;textcolor GREEN'
pd 'text ',xhi,' ',yhi,' High=',":hp
NB. Place text for low point:
pd 'textfont Courier 12 Bold;textcolor RED'
pd 'text ',xlow,' ',ylow,' Low=',":lp
NB. Draw line at mean value
mp=. mean rr
span=. (>./-<./)rr
xmn=. ":<.0.5*1000 NB. Horizontally in middle
ymn=. (mp-lp)%span NB. Estimate distance from lowest
ymn=. ":<.0.5+1000*ymn NB. Estimate height of line
pd 'textfont Courier 14 Bold;textcolor BLACK'
pd 'text ',xmn,' ',ymn,' Mean=',":mp
pd 'pensize 3'
pd rr,:(#rr)$mp
pd 'show'
Hope this helps,
Devon
On 6/27/07, Ed Cox <[EMAIL PROTECTED]> wrote:
The problem I have is that I want to add text to a plot. However, Plot
Text
uses the coordinate system of the window whereas I want to use the graph
coordinates to plot text so that it can be aligned with plotted points.
Since I don't see any functions that convert from one coordinate system to
the other I need to find a way to plot text using another method. The
only
method that seems like it might work is Plot Type Symbol. The
documentation
implies that this plot characters. But I can not find ANY information on
how to actually do that. I've tried a few more obvious versions of what I
think the command might look like, but nothing works.
Can anyone confirm that plot type symbol actually can be used to plot
characters in the graph coordinate system, and if so, tell me how to do
it?
- Ed Cox
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--
Devon McCormick, CFA
^me^ at acm.
org is my
preferred e-mail
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