---Sherlock, Ric wrote:
> --Oleg Kobchenko wrote:
> > There is also filled/hollow candlesticks charts.
>
> I thought these would be quite easy to implement by combining
> a hilo plot and a floating bar plot, but ran in to a couple of issues.
>
> A) The way the horizontal position of the bars and the hilo
> lines are calculated doesn't seem to be compatible so the
> bars are not centred on the lines except for the middle
> datapoint. There may be a way to force these to overlap?
>
> B) The floating bar plot type forces the y range to include
> 0 which means that small changes in values a long way from 0
> don't show up well. Manually specifying the yrange, (eg.
> yrange 60 80) only affects the max value not the minimum.
Solved issue A, but there is still the problem with yrange.
load 'plot csv'
Dmarkf=: jpath '~system\examples\data\dm0396.txt'
data2=: |: _50{. 0". >1 2 3 4{"1 readcsv Dmarkf
'yrange 0 10' plot_candlestick data2-65
Here is an example of adding custom x labels:
lbls=: ;:^:_1 (8!:0 lbl) (<:lbl=.(>:i.10)*50%10)} 50#<'""'
('yrange 0 10;xlabel ',lbls) plot_candlestick data2-65
plot_candlestick=: 3 : 0
''plot_candlestick y
:
hl=. 1 2{y
oc=. 0 3{y
oc=. (<./ , (] (|@:*"1) 0&> ,: 0&<)@:-/) oc
ntics=. {:$hl
pd 'reset'
pd 'xrange ',": _0.5+0,ntics
pd x
pd 'color blue'
pd 'type hilo'
pd hl
pd 'color white,blue'
pd 'barwidth 0.4'
pd 'type fbar'
pd oc
pd 'show'
)
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