Hello:
Correct me if I'm wrong, but there's no way to avoid that an interaction
is rebuilt after any change in the controls. While I've been able to
live with that, I was now working in some examples using persistent data
(code is below), and I'd really love two or three things:
1) To choose which controls trigger an update and which ones don't
2) Buttons: very similar to current selectors with the option
buttons=true, the only difference that no one keeps selected after
hitting the button.
3) (?) Update values of the controls other than the one the user changed
I find there is room in the interact wiki for some examples using
persistence: "construct bezier curve introducing the points one by one",
"place queens in a board and watch the cells in the board that they
threaten", "play nim against a perfect oponent"... but I'd need at least
number one above.
I would like to put all the input data, and nothing to happen, and then
the plot would be rebuilt only after the button is hit. Maybe there's a
workaround, but I don't see it. Currently I can only do the following,
which has problems when trying to remove a point, as you will see:
#Idea: add points to a plot one by one, and they stay in the plot
#you chould also be able to remove them and clear them all
points=[(0,0)]
curva=plot(sin(x))
menu=['Restart','Add points','Delete points',]
@interact
def persistent_example_with_interact( option=selector(menu,
buttons=True), punto=input_box(default=(1,0)) ):
global points
print option
if option=='Restart':
points=[(0,0)]
elif option=='Add points':
points.append(points)
else:
points.remove(points)
print points
plot_points=[point2d(p,pointsize=30,rgbcolor=hue(random())) for p in
points]
show(sum(plot_points),aspect_ratio=1,xmin=-2,xmax=2,ymin=-2,ymax=2)
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