Lierlijnen

Lierlijnen, also known as contour lines or isopleths, are lines drawn on maps to represent points of equal value. These lines are commonly used in topographic maps to indicate changes in elevation, but they can also represent other variables such as temperature, pressure, or population density. Each lierlijn connects points that have the same value, allowing for the visualization of gradients and variations across a geographical area.

In topographic mapping, lierlijnen are typically drawn at regular intervals, with each line representing a specific elevation above sea level. For example, if the interval is 10 meters, a lierlijn at 100 meters would connect all points that are exactly 100 meters above sea level. The closer the lierlijnen are to each other, the steeper the terrain. Conversely, widely spaced lierlijnen indicate gentler slopes.

Lierlijnen are essential tools in cartography and geographic information systems (GIS) for analyzing and interpreting spatial data. They help in understanding the topography of an area, identifying potential hazards such as steep slopes or low-lying regions prone to flooding, and planning routes and infrastructure development. By providing a clear and concise representation of elevation changes, lierlijnen enhance the usability and accuracy of maps for various applications, including hiking, navigation, and urban planning.