draw a line parallel to x-axis

How to draw line parallel to x-axis at a point (y = 1) and also find the area above that line.

Answer 1

[Jan]

line([0.2, 19.8], [1, 1], 'Color', [1,0,0]);

If you have a question about drawing a "line", look into the documentation:

docsearch line

To get the area, create a polygon at first by finding the points, where this line crosses the area. Perhaps this helps:

• FEX: curve-intersections
• FEX: find_cross
• FEX: findx

You can find such functions by searching in the FileExchange or in the internet. You are a long term user of the forum and should know, that you are wanted to search by your own at first.

Afterwards polyarea helps.