Develop a tool that reads a table of data and produces a scatterplot using two userdefined variables similar to the scatterplot shown in Fig. 7.3. Allow the user to interactively change the variables...

Develop a tool that reads a table of data and produces a scatterplot using two userdefined variables similar to the scatterplot shown in Fig. 7.3. Allow the user to interactively change the variables that are mapped to the x and y axes. Allow the user to select a third variable to map to the size or color of the scatterplot points. Describe an alternative method to encode a fourth variable in the scatterplot visualization. What issues would do you expect to encounter by encoding 4 or more variables in a single visualization?

Fig. 7.3