👉 Topline, also known as a vertical line graph or a straight line graph, is a type of data visualization that plots data points on a horizontal or vertical line. The x-axis represents the independent variable(s) and the y-axis represents the dependent variable(s). Topline graphs are used for visualizing trends in time-series data, where each point on the graph represents a specific value over time. Toline graphs can be created using various programming languages such as Python, R, or Excel. They