[Tutor] plotting pixels

[Bill Allen]

On Sat, Sep 18, 2010 at 10:44 AM, Bill Allen <wallenpb at gmail.com> wrote:

>
>
> On Fri, Sep 17, 2010 at 3:38 AM, Alan Gauld <alan.gauld at btinternet.com>wrote:
>
>>
>> For plotting pixels I would not use turtle graphics.
>> That would be a fairly complicated option I'd have thought.
>> A simple canvas would be easier.
>>
>> Alan G.
>>
>>
> Oh, I see!  I did not realize that Tk had a canvas widget.  That is nice.
> I will have to play with that and see if I can get everything done in the
> code I am working with.  What I am doing is just trying to do a simple
> Mandelbrot set plot.  It is another bit of coding that I do when learning a
> new language to get a handle on some of the graphics capabilities, and I am
> to that point.
>
> -Bill
>
 It appears that the Tk canvas widget does not support simply plotting a
pixel.  However, I can plot a line only one pixel long.   I wonder why they
do not simply provide the pixel plot primitive?  I have seen very many
graphics packages that do this and I have always wondered why.  The
primitive obviously exists in the underlying code, because that is what
everything else is built upon.  Does Tk actually have a something like a
create_pixel method in the canvas widget that I have missed?

-Bill
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