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Date: Thu, 12 Jun 2014 13:33:35 -0700 (PDT)
From: Pedro Izecksohn <izecksohn@yahoo.com>
Subject: Re: Lines on a tkinter.Canvas
To: Gregory Ewing <greg.ewing@canterbury.ac.nz>, "python-list@python.org" <python-list@python.org>
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----- Original Message -----=0A=0A> From: Gregory Ewing=0A> To: python-list=
@python.org=0A> Sent: Thursday, June 12, 2014 8:38 AM=0A> Subject: Re: Line=
s on a tkinter.Canvas=0A> =0A> Pedro Izecksohn wrote:=0A>>  The Canvas' met=
hod create_line turns on at least 2 pixels. But I want =0A> to turn=0A>>  o=
n many single pixels on a Canvas.=0A> =0A> You could try using a 1x1 rectan=
gle instead.=0A=0Apedro@microboard:~/programming/python/tk/canvas$ diff old=
/testing.001.py testing.py=0A19c19=0A<=A0=A0=A0=A0 self.canvas.create_line =
(p.x, p.y, p.x, p.y, fill =3D color)=0A---=0A>=A0=A0=A0=A0 self.canvas.crea=
te_rectangle (p.x, p.y, p.x, p.y, fill =3D color)=0A=0A=A0 The result that =
I got is: The line drawn by it is not shown.=0A=0A> However, be aware that =
either of these will use quite a=0A> lot of memory per pixel. If you are dr=
awing a very large=0A> number of pixels, this could cause performance probl=
ems.=0A> In that case, you might want to use a different approach,=0A> such=
 as creating an image and telling the canvas to display=0A> the image.=0A=
=0A=A0 I did not try this yet.