[REBOL] Re: Plotting charts on Rebol View?
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 -----
> From: "Lok Yek Soon" <[slok00--yahoo--com]>
> To: <[rebol-list--rebol--com]>
> Sent: Tuesday, November 27, 2001 4:09 PM
> Subject: [REBOL] Plotting charts on Rebol View?
>> 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
--
Carl Read
