RE: [amibroker] convert Prices coordinates to Pixel coordinates

["Jerry Gress" <pleasenospamplease@xxxxxxxxxxx>]

I do not know what message number it the below was so just copied it from my
favorites under low level graphics. 



Begin:

Patrick,

No, it is not on to-do list. 
Low-level graphics uses pixels because it is natural co-ordinate system on
the computer.

You can easily transform from your "values" to pixels using linear
transformation:

MinY = ...your minimum y
MaxY = ...your maximum Y
MinX = ...your minimum X
MaxX = ...your maximum X

function GetPixelY( value )
{
 global MinY;
 global MaxY;

 return Status("pxheight") * ( value - MinY ) / (MaxY - MinY); }


function GetPixelX( value )
{
 global MinX;
 global MaxX;

 return Status("pxwidth") * ( value - MinX ) / (MaxX - MinX); }



Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "vlanschot" <vlanschot@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, October 07, 2007 12:55 PM
Subject: [amibroker] Re: Looking for Gfx XY Charting template


> Herman, sorry that this won't help you, but I think many people, like 
> myself who've experimented with the custom charting functions, are 
> waiting for TJ to upgrade this functionality to chart along specified 
> values of the variables, instead of (currently the non-intuitive) 
> screen pixels. My guess is that this is why you see so few Gfx 
> examples, whereas potentially it's such a great tool. Fortunately, 
> unless I'm misinformed, this is on TJ's "to-do" list (along with 
> 15000000000000 other enhancements ;-)).
> 
> PS
>

End:

Jerry Gress
Stockton, Ca.

-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of Herman
Sent: Saturday, March 01, 2008 10:51 AM
To: AmiBroker User Group
Subject: [amibroker] convert Prices coordinates to Pixel coordinates

Hello, 




I remember seeing an example to convert Prices coordinates to Pixel
coordinates, but i can't find it. 




Would anyone remember how to do it?




Many thanks!

herman

 



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