# CDF Interactivity

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3D Graphics

rotate, scale, and zoom 3D graphics

icosahedron, truncated icosahedron
Klein bottle image
visualize the structure of a molecule

space filling structure of ATP
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Plots & Maps

hover over a plot to see data values

Chad population
USA national debt per capita/USA GDP per capita
resize plots, maps, and other graphics

earthquakes near Tokyo
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Physics Demonstrations

manipulate variables to change plots in real time

damped harmonic oscillator with forcing
view an animation of a computed trajectory

double pendulum
spring pendulum
elastic collision
view an animation of a thermodynamic cycle

Stirling cycle
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Image Processing

adjust image processing parameters interactively

binarize grey wolf image with threshold x
edge detect Abraham Lincoln image with radius x
gaussian blur monkey image radius x
sharpen map of London with radius r
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Interactive Math Plots

interactively adjust plot ranges

plot x sin x
visualize solutions to an equation with a parameter

vary a in x^3+y^3=a^3
interactively trace a curve by varying the parameter

parametric plot (sin 10t, sin 7t), t=0..2pi
polar plot sin(8t), t=0 to 2Pi
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Differential Equations

interact with differential equation plots

w"(x)+w'(x)+w(x)=0
y"(z) + sin(y(z)) = 0
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Differential Geometry

analyze a function with interactive visualizations

t cos(t)
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Complex Analysis

interactively visualize a complex map

sin(z)
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Quaternions

visualize the rotation associated with a quaternion

quaternion 1-12i-7j-k