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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Lines on a tkinter.Canvas
Date: Thu, 12 Jun 2014 13:44:04 -0400
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On 6/12/2014 7:38 AM, Gregory Ewing wrote:
> Pedro Izecksohn wrote:
>> The Canvas' method create_line turns on at least 2 pixels. But I want
>> to turn
>> on many single pixels on a Canvas.
>
> You could try using a 1x1 rectangle instead.
>
> However, be aware that either of these will use quite a
> lot of memory per pixel. If you are drawing a very large
> number of pixels, this could cause performance problems.

Pedro, the tkinter canvas is a vector graphics canvas, not a bitmap 
image canvas as in paint programs.

> In that case, you might want to use a different approach,
> such as creating an image and telling the canvas to display
> the image.

-- 
Terry Jan Reedy