How does @interact work in Sage 7.3 Jupiter notebook?

[ahaus...@umassd.edu]

Hi,

the Interact command does not seem to be working in Sage 7.3 Jupyer Notebook!

Here is the code from a notebook cell:

-----------------------------------------------------------------

from ipywidgets import interact, interactive, fixed

import ipywidgets as widgets

def plotNthRoots(n):

    # Create a unit circle

    c = circle((0,0), radius=1, rgbcolor=(1,0,0))

    # Combine the circle with points on the circle representing the roots of unity

    theta = 2.0*pi/float(n)

    p = c + point([(cos(t), sin(t)) for t in srange(0, 2.0*pi, theta)],frame=True,size=60)

    # Add in vectors from the origin to the roots of unity.

    p = p + sum([arrow2d( (0,0), (cos(t),sin(t)) ) for t in srange(0, 2.0*pi, theta)])

    show(p)

    print("The Principle %d-Root: (%5.3f)+(%5.3f)I"%(n,cos(theta), sin(theta)) )

    

@interact

def _(n=(1,20)):

    plotNthRoots(n)

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Rather than creating a slider, it generates a plot for the case n=20.

Any suggestions?

Adam Hausknecht

[Emmanuel Charpentier]

This post might help... Note that this solution is different of Sage's (@)interact function(s).

HTH,

--
Emmanuel Charpentier