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iPlots is a package which provides interactive statistical graphics, written in Java. You can find many interesting plots such as histograms, barcharts, scatterplots, boxplots, fluctuation diagrams, parallel coordinates plots and spineplots. The amazing part is that all of these plots support querying, linked highlighting, color brushing, and interactive changing of parameters.

Look at the examples given and try to understand the logic behind them. Then try to solve the exercises below using R and without looking at the answers. Then check the solutions.

Exercise 1

Install and call the packages `iplots` and `MASS` in your working environment and then attach the dataset “Cars93”.

Exercise 2

Create a mosaic plot of the variables “AirBags”, “Cylinders” and “Origin” of the “Cars93” dataset. HINT: Use `imosaic()`.

Exercise 3

Create a barchart of the variable “Fuel.tank.capacity” of the “Cars93” dataset. HINT: Use `ibar()`.

Exercise 4

Get a spineplot of the barchart you created in Exercise 3. HINT: Use `spineplot`.

Exercise 5

See how the variable “Type” is ordered. HINT: Use `levels()`.

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• Work extensively with different packages to visualize your data
• Learn what visualizations exist for your specific use case
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Exercise 6

Reverse the order of the variable “Type”, name it “Type2” and check the order of “Type2”. HINT: Use `ordered()` and `levels()`.

Exercise 7

Plot the barcharts of “Type” and “Type2” and spot the difference. HINT: Use `ibar()`.

Exercise 8

Make a Parallel Coordinate Plot for all the continuous variables of “Cars93”. HINT: Use `ipcp()`.

Exercise 9

Make a parallel boxplot for all “price” variables. HINT: Use `ibox()`.

Exercise 10

Split the boxplot for “Wheelbase” by number of “Cylinders”. HINT: Use `ibox()`.