Not everything is numeric, and often non-numeric data has to be handled differently, as we saw in the chapter on statistics and the one on data mining. For example, a scatter plot doesn't make much sense unless the data is naturally ordered in some way.
In this recipe, we'll use a bar chart to display how many items have each possible value for a field of categorical data.
We'll use the same dependencies in our project.clj
file as we did in the Creating scatter plots with Incanter recipe.
We'll use this set of imports in our script or REPL.
(require '[incanter.core :as i] '[incanter.charts :as c] '[incanter.io :as iio])
For this chart, we'll use the mushroom dataset from the UCI machine learning archive. The web page with information about this dataset is at http://archive.ics.uci.edu/ml/datasets/Mushroom, and we can download a copy of it with header names directly from http://www.ericrochester.com/clj-data-analysis/data...