Line diagrams are diagrams with which functional relationships are represented in a rectangular coordinate system. In the coordinates, several physical, organizational or economic variables can be represented over time
(x). For example, a line chart can be used to represent gauge values over time, or visitors to a website
over time of day, or monthly sales over the year, or temperature over the days of the month.The line chart is formed from the connecting lines between the respective measured values and thus represents the connecting line between the individual points.
. It graphically illustrates how certain physical, organizational or economic parameters develop. Line charts are drawn in rectangular, Cartesian coordinate systems.
They can also be used as a basis for area diagrams.