i want to save my phote in computer,so i add
canvas.postscript(file="mystock.eps")
there is a file named mystock.eps,but nothing in it!I want to know how to
save my canvas as an image file.
------------------ Original ------------------
From: "johnmc"<joh...@velseis.com>;
Date: Sun, Sep 4, 2011 11:26 AM
To: "contro opinion"<contropin...@gmail.com>; "John
McMonagle"<jmcmona...@velseis.com>;
"Tkinter-discuss"<tkinter-discuss@python.org>;
Subject: Re: [Tkinter-discuss] scrolled canvas ,strange problem
On Sat, 3 Sep 2011 17:31:24 +0800, contro opinion wrote
> i have written a program in tkinter to draw stock graph,there are two
> strange thing i can't understand
> the attachment is 'AAU' data file(attachment 1).when you download it
> ,please save it in /tmp/AAU
> there is a scrolled canvas in it ,
>
> 1.strang long line,please see my attachment.
> i have see my data ,my formulation ,no wrong,but the line is so long!!
>
I haven't analysed it thoroughly, but your horizontal scale for the data does
not match
the horizontal scale for your labels or motion reporting. The "long line" you
see
actually matches the data on line 1089 in your data file. The date on this
line is
2007-02-27.
> 2.there is no motion event reaction in the right of canvas,only
> motion event reaction in the left of canvas.
The IS a motion event throughout the entire canvas. Again, your problem seems
to be
with your horizontal scale. The far right coordinate is 5710, yet you only
report the
motion to 2764, the upper limit of self.xsqueen.
> 3.i have round function ,but the output is still more fractions than 2.
Whether you round a float or not has no impact on how it is displayed as a
string. You
need to use the appropriate string formatting. If you want two decimal places
try the
following format:
%.2f rather than %f. The rounding will also be properly handled by the string
formatting, so there will be no need to use the round function.
Regards,
John
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