I'm using @interact to make a demo for my calculus students involving
area minimization:
@interact
def _(s=slider(-10,-0.1,0.1,default=-2.5,label='slope')):
html('Try to minimize the area of the triangle whose hypotenuse
passes through (2,3)')
G=line([(0,-2*s+3), (-3/s+2,0)]) #s*(x-2)+3,(x,-1,6))
G += polygon( [ (0,0), (0,-2*s+3), (-3/s+2,0) ],
rgbcolor=hue(0.75))
G += point([(0,-2*s+3),(-3/s+2,0),(2,3),
(0,0)],rgbcolor=hue(0.95),pointsize=25)
G.show(ymin=-1, ymax=10, xmin=-1, xmax=6, figsize=3)
html('Area = %f' % (1/2*(-2*s+3)*(-3/s+2)))
Everything works great on my local machine (Mac OSX 10.6, Sage 4.3.3)
and also works great on sagenb.org when I'm logged in, but the
published version only shows a slider, no graph:
http://sagenb.org/home/pub/1777/
It also seems to run excruciatingly slow. I don't know if that's
because of too many users on the server, or something in my example. I
thought maybe @interact is somehow turned off on the public server
because it could cause a huge server load, but couldn't find any posts
or notices to this effect. Thanks for any suggestions.
--
Benjamin F Jones
bjo...@math.uga.edu
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