XLSTAT - Parallel Coordinates Visualization
Structure of a Parallel Coordinates plot
If you consider N observations described by P quantitative and Q qualitative variables, the chart consists of P+Q vertical axes each representing a variable, and N lines corresponding to each observation. A line crosses an axis at the value corresponding to the value that the observation takes for the variable corresponding to the axis.
Use of Parallel Coordinates Visualization
This visualization method is useful for data analysis when you need to discover or validate groups. For example, this method could be used after Agglomerative Hierarchical Clustering.
Using this method you are able to visually determine which variables are discriminative.
This analysis is available in the XLStat-Basic addin for Microsoft Excel™