Plotting TP/FN Bar Chart from Confusion Matrix

This code provides an alternative view of confusion matrix data by plotting as a bar chart.

This function will produce a bar plot to show the true positives (TP) versus the false negative (FN) for each target class. Both correct and incorrect classifications are color-coded to show the predicted class.

Inputs:

C - an integer matrix of the confusion data to plot, with ground truth labels in rows and predicted labels in columns

c_labels - a cell array of class labels, given in the same order as in C

cmap - [optional] a colormap matrix specifying colors to use in displaying each class from c_labels

max_y - [optional] integer maximum value for y axis in the produced plot

Outputs:

b_fig - a handle to the figure produced