From p.dalgaard at biostat.ku.dk  Sat Jul 26 10:24:39 2008
From: p.dalgaard at biostat.ku.dk (Peter Dalgaard)
Date: Sat, 26 Jul 2008 10:24:39 +0200
Subject: [Rd] the C function drawing a rectangle: heatmap() -> image()->
 do_image() -> GRect() -> GERect() -> rect()
In-Reply-To: <200807261616094217204@163.com>
References: <200807261055078432709@163.com>,
	<488AD845.7040200@biostat.ku.dk> <200807261616094217204@163.com>
Message-ID: <488ADF47.1020309@biostat.ku.dk>

Zhaoyuan Fang wrote:
> But rect() still seems to call -> do_rect() -> GRect(), and thus turns back?? How do you consider this strange thing? Thanks!
>   
GRect/GERect do NOT call rect()!!!!! Please read what I wrote....
> ------------------				 
> Best wishes,
> Zhaoyuan
>
> -------------------------------------------------------------
> ????Peter Dalgaard
> ?????2008-07-26 15:56:39
> ????fangzy2007 at gmail.com
> ???R-devel Mailing List
> ???Re: [Rd] the C function drawing a rectangle: heatmap() -> image()->	do_image() -> GRect() -> GERect() -> rect() 
>
> Zhaoyuan Fang wrote:
>   
>> Hello anyone used to do similar things: search for the final C function that corresponding to the drawing of a rectangle? 
>>
>> As listed in the subject, I started from heatmap() in R and after several steps reached the GRect() in C. However, then it refers to rect() which further seems to refer to do_rect(), and then, surpringly, do_rect refers to GRect()!!! A dependency circle! How can it work if no functions soly taking the job for drawing a rectangle?  
>>
>> I know there must be somewhere wrong in my above function "chain", and can you help me to find it out? Many thanks!
>>  				
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>   
>>     
> I see GRect() calling GERect() calling dd->dev->rect(), i.e. a function 
> in the current device structure. This will typically have been set to 
> something like X11_Rect() or Cairo_Rect() or ....
>
>   


-- 
   O__  ---- Peter Dalgaard             ?ster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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[Rd] the C function drawing a rectangle: heatmap() -> image()-> do_image() -> GRect() -> GERect() -> rect()
Peter Dalgaard