Creating a web chart

Since many of the data fields are categorical, you can also try plotting a web chart, which maps associations between different categories.

Figure 1. Web node
Web node
  1. Place a Web node on the canvas and connect it to the drug1n.csv Data Asset node. Then double-click the Web node to edit its properties.
  2. Select the fields BP (for blood pressure) and Drug. Click Save, then right-click the Web node and select Run. A web chart is added to the Outputs pane.
    Figure 2. Web graph of drugs vs. blood pressure
    Web graph of drugs vs. blood pressure

From the plot, it appears that drug Y is associated with all three levels of blood pressure. This is no surprise; you have already determined the situation in which drug Y is best.

But if you ignore drug Y and focus on the other drugs, you can see that drugs A and B are also associated with high blood pressure. And drugs C and X are associated with low blood pressure. And normal blood pressure is associated with drug X. At this point, though, you still don't know how to choose between drugs A and B or between drugs C and X, for a given patient. This is where modeling can help.