Database Reference
In-Depth Information
There's more...
F
For an easy, visual explanation of PCA, see the
A layman's introduction to principle
F
For more details on PCA, see
A Tutorial on Principle Component Analysis
by Jonathon
Creating dynamic charts with Incanter
Charts are powerful tools to explore data, and dynamic charts—charts that react to user
input—are even more useful.
In this recipe, we'll create a simple chart that graphs the quadratic equation and lets us play
with the parameters and see the results in real time.
Getting ready
We'll use the same dependencies in our
project.clj
ile as we did in
Creating scatter plots
with Incanter
.
We'll use this set of imports in our script or REPL:
(require '[incanter.core :as i]
'[incanter.charts :as c])
How to do it...
It seems like creating a dynamic chart would be dificult, but it's not. We just deine a
dynamic-xy-plot
with the variables and relationships that we want, and Incanter
will do the rest:
(def d-plot
(let [x (range -1 1 0.1)]
(c/dynamic-xy-plot
[a (range -1.0 1.0 0.1)
b (range -1.0 1.0 0.1)
c (range -1.0 1.0 0.1)]
[x (i/plus (i/mult a x x) (i/mult b x) c)])))
(i/view d-plot)
