title: How can I draw a graph or plot with 4 quadrants using Python matplotlib?
body: <p>My objective is to draw a graph with 4 quadrants and plot points in the same. And also, how can I divide a quadrant into several sectors? How can I do the same in matplotlib: a graph/plot with 4 quadrants. With x axis (1-9) and y-axis(1-9)?</p>