public void clear() {
        for (Section section : mSections) {
            section.title = "";

            for (Column column : section.columns) {
                column.timings.clear();
            }
        }
        invalidate();
    }
Hacked together barchart view for this demo. Please do not take this as an example of a good way to do things.
BenchmarkDemo/app/src/main/java/com/bluelinelabs/logansquare/demo/widget/BarChart.java