William Stein wrote:
> On Mon, Apr 20, 2009 at 10:17 AM, Jason Grout
> <jason-s...@creativetrax.com> wrote:
>> William Stein wrote:
>>> On Mon, Apr 20, 2009 at 9:50 AM, Nick Alexander <ncalexan...@gmail.com>
>>> wrote:
>>>>> If there's not currently an easy way to do this,
>>> There isn't one.
>>>
>>>>> I think this could
>>>>> easily be accomplished by having the show command return the "<img
>>>>> src='cell://filename'/>" tag that we would normally do by hand,
>>>>> instead
>>>>> of just generating an image, returning None, and letting the notebook
>>>>> automatically pick up the image at the end of the output.
>>> Yes, that does seem like a good idea. Try it.
>>
>> Yep, I've been trying the last few minutes. Part of what messes things
>> up is that the output of a cell does not include anything but the last
>> command, so a cell like:
>>
>> show(graphic)
>> print "hi"
>>
>> will not print out the <img> tag returned by show.
>>
>> There was discussion about this a while ago, IIRC. Does anyone know if
>> anything was done about it? (it's obviously not fixed...)
>>
>> You can see the problem in a cell that looks like this:
>>
>> s="hi"
>> s
>> s
>>
>> It will only print out "hi" once (i.e., only display the result of the
>> last command)
>>
>> Jason
>
>
> I think you're confused. Try the following little demo worksheet, and
> all will be clear:
>
>
> {{{id=15|
> def myshow(G, *args, **kwds):
> filename = 'sage-%s.png'%randint(0,1000000)
> G.save(filename, *args, **kwds)
> html("<img src='cell://%s'>"%filename)
> ///
> }}}
>
> {{{id=14|
> print "First plot sin:"
> myshow(plot(sin,0,2),figsize=[2,1])
> print "And now for cos"
> myshow(plot(cos,0,2),figsize=[2,1])
> print "Cool, eh?"
> ///
>
> First plot sin:
> <html><font color='black'><img src='cell://sage-213578.png'></font></html>
> And now for cos
> <html><font color='black'><img src='cell://sage-462904.png'></font></html>
> Cool, eh?
> }}}
So apparently html() contains the print function? This worksheet
illustrates the problem with the approach:
{{{id=15|
def myshow(G, *args, **kwds):
filename = 'sage-%s.png'%randint(0,1000000)
G.save(filename, *args, **kwds)
html("<img src='cell://%s'>"%filename)
///
}}}
{{{id=14|
print "First plot sin:"
plot1=myshow(plot(sin,0,2),figsize=[2,1]) # Shows the plot anyway!
print "And now for cos"
plot2=myshow(plot(cos,0,2),figsize=[2,1]) # Shows the plot anyway!
print "Cool, eh?"
///
First plot sin:
<html><font color='black'><img src='cell://sage-558439.png'></font></html>
And now for cos
<html><font color='black'><img src='cell://sage-118258.png'></font></html>
Cool, eh?
}}}
{{{id=16|
plot1 # Should show the plot
///
}}}
{{{id=17|
plot2 # Should show the plot
///
}}}
{{{id=18|
///
}}}
--
Jason Grout
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