Here's an example of an OHLC chart:
http://www.amcharts.com/stock/ohlc-chart/ .
I see how this is an attempt at something like this but the data doesn't
make sense as the first entry has a closing price lower than the low price.
On Thu, Nov 20, 2008 at 10:46 PM, Sherlock, Ric
<[EMAIL PROTECTED]>wrote:
> ---Tom wrote:
> > Does anybody know if plot can do OHLC (open/high/low/close) style
> > charting? I see it can do high/low, but not OHLC.
>
> Not out of the box, but you can pretty easily make a custom plot to do the
> job.
> This one is a start but could be improved.
>
> plot_olhc=: 3 : 0
> ''plot_olhc y
> :
> hl=. 1 2{y
> oc=. 0 3{y
> ntics=. {:$hl
> oc=. ,|:oc
> oc=. (2#i.ntics);oc
> pd 'reset'
> pd 'xticpos ',": i.ntics
> pd x
> pd 'type line'
> pd oc
> pd 'type hilo'
> pd 'color red'
> pd hl
> pd 'show'
> )
>
> NB. Example data
> data=: 0".> <;._2 ] 0 : 0
> 71.93 72.99 73.32 71.89 73.86
> 72 73 73.6 72.2 74.3
> 71.5 72.25 73.2 71.8 73.2
> 71 72 73 72 73
> )
>
> Note 'examples'
> plot_olhc data
> 'color red;pensize 2' plot_olhc data
> 'xlabel Feb Mar Apr May Jun' plot_olhc data
> )
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
Devon McCormick, CFA
^me^ at acm.
org is my
preferred e-mail
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