How to plot this kind of bar using whatever plot tools?

Question

I want to plot this kind of figure to show the progress of an event. The highlighted parts show detected instances (Here's an example of what I want to plot). As you can see, there're in total 3 models and one ground truth, and I want to compare their performances. Do you know any tool that can help me plot this kind of bar-like figure?

Here's another example.

Answer 1

Mathematica:

PairedBarChart[{4, 0, 3, 6, 5, 1}, {4, 0, 3, 6, 5, 1},
 BarSpacing -> {0, 0, 0},
 ChartStyle -> {Red, Green, Blue, Orange, Purple, Black, Yellow}]

(Includes $0$ and $1$.)