In my notebook i have 7 FloatSlider widgets. I want to have the product of these 7 widgets displayed at all times in a way that, as the user moves the sliders, the value displayed is updated. Currently i am trying to display the product of the SliderWidgets in a Widgets.Text (n), but i am not sure if it is the best solution.
import ipywidgets as widgets
caption = widgets.Label(value='Play around with the variables to see how N changes!')
r = widgets.FloatSlider(value=1,
min=1.0,
max=3.0,
step=0.1,
description="R*")
fp = widgets.FloatSlider(value=1,
min=0.35,
max=1.0,
step=0.05,
description="fp")
ne = widgets.FloatSlider(value=1
min=0.2,
max=3.0,
step=0.1,
description="ne")
fl = widgets.FloatSlider(value=1,
min=1.0,
max=1.3,
step=0.05,
description="fl")
fi = widgets.FloatSlider(value=1,
min=0.5,
max=1.5,
step=0.05,
description="fi")
fc = widgets.FloatSlider(value=0.20,
min=0.10,
max=0.30,
step=0.05,
description="fi",)
l = widgets.FloatSlider(value=60000000.0,
min=5000000.0,
max=1000000000.0,
step=5000000,
description="fi")
n = widgets.Text(
value= str(int(r.value * fp.value * ne.value * fl.value * fi.value * fc.value * l.value)) + " civilizations" ,
description='Estimated N:',
disabled=True)
left_box = VBox([r, fp, ne,fl])
right_box = VBox([ fi,fc,l,n])
HBox([left_box, right_box])
This code that i used displays the widgets, but does not update the widget n automatically. What is the best way for me to do it, that does not involve printing a new value everytime?
You can use an observe and a callback function on value change for each slider
def on_value_change(change):
n.value = str(int(r.value * fp.value * ne.value * fl.value * fi.value * fc.value * l.value)) + " civilizations"
r.observe(on_value_change)
fp.observe(on_value_change)
# ...