Hi,
The @interact command does not seem to work correctly in Sage 7.3 (See
Example 1)
I also tried the following import which I found online:
from ipywidgets import interact, interactive, fixedimport ipywidgets as widgets
The result was better but didn't contain a slider! See the attached figure.
Note it still works with the old style notebooks in Sage 7.3!
------------------------------------------------------------------------------------------------------------------
Example 1:
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)
----------------------------------------------
<html><!--notruncate-->
<div padding=6 id="div-interact-0">
<table width=800px height=20px bgcolor="#c5c5c5" cellpadding=15>
<tr>
<td bgcolor="#f9f9f9" valign=top align=left>
<table>
<tr><td colspan=3><table><tr><td align=right><font
color="black">n </font></td><td>
<table>
<tr>
<td>
<div id="slider-n-0" style="margin:0px; margin-left: 1.0em;
margin-right: 1.0em; width: 15.0em;"></div>
</td>
<td>
<font color="black" id="slider-n-0-lbl"></font>
</td>
</tr>
</table><script>
(function() {
var values =
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setTimeout(function() {
$('#slider-n-0').slider({
step: 1,
min: 0,
max: 499,
value: 0,
change: function (e, ui) {
var position = ui.value;
if (values != null) {
$('#slider-n-0-lbl').text(values[position]);
interact(0, {variable: 'n', adapt_number: 1, value:
encode64(position)}, 1);
}
},
slide: function (e, ui) {
if (values != null) {
$('#slider-n-0-lbl').text(values[ui.value]);
}
}
});
if (values != null) {
$('#slider-n-0-lbl').text(values[$('#slider-n-0').slider('value')]);
}
}, 1);
})();
</script></td>
</tr></table></td></tr>
<tr><td></td><td style='width: 100%;'>
<div id="cell-interact-0"><?__SAGE__START>
<table border=0 bgcolor="white" width=100%>
<tr>
<td bgcolor="white" align=left valign=top>
<pre><?__SAGE__TEXT></pre>
</td>
</tr>
<tr>
<td align=left valign=top><?__SAGE__HTML></td>
</tr>
</table><?__SAGE__END>
</div></td><td></td></tr>
<tr><td colspan=3></td></tr>
</table></td>
</tr>
</table>
</div></html>
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