Plotting charts on Rebol View?
[1/5] from: slok00:yaho:o at: 26-Nov-2001 19:09
Is it possible to plot charts on Rebol View?
A client has approached me to build a system, of
which,
one of the requirements is to extract data and plot a
chart (much like those you see for stock markets).
I have seen IOS having a reblet called Plotter, but
there
is no further screen shot nor do I recall anyone doing
similiar stuffs on the list.
Any suggestion is appreciated.
Thanks
Yek Soon
[2/5] from: james::mustard::co::nz at: 27-Nov-2001 16:27
Hi there,
Desktop / docs / Easy Draw demo covers how to build any of those sort of
graphs by using the draw dialect.
James.
[3/5] from: carl:cybercraft at: 27-Nov-2001 17:56
On 27-Nov-01, James Marsden wrote:
> Hi there,
> Desktop / docs / Easy Draw demo covers how to build any of those
> sort of graphs by using the draw dialect.
An alternative way, if it's just pixel-plotting you want, is to 'poke
directly to an image. Example...
rebol []
plot: func [image x y color][
x: to-integer x + .5
y: to-integer y + .5
poke image y * image/size/1 + x color
]
pic: to-image 200x200
y: 50
for x 0 199 1 [
plot pic x y red
y: y + .5
]
view layout [image pic]
I could've used a pair for the xy values, but it seemed simplier not
to.
> James.
> ----- Original Message -----
<<quoted lines omitted: 14>>
>> Thanks
>> Yek Soon
--
Carl Read
[4/5] from: greggirwin:mindspring at: 27-Nov-2001 9:14
Hi Yek Soon,
<< Is it possible to plot charts on Rebol View? >>
Absolutely. I did a little biorhythm program to find that out myself and
line charts are easy. Someone also recently posted a nifty way to do bar
charts.
--Gregg
[5/5] from: arolls:idatam:au at: 30-Nov-2001 17:50
I built a graphics library, which I use for
many scripts on my rebsite "Anton".
http://anton.idatam.com.au/rebol/library/graphics.r
It contains a BAR function and others (line, ellipse
etc). It may be useful.
(I thought I had a nice fill function somewhere).
Someone else was making a nice graph program...
Check escribe for that.
Anton.
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