tasokäyristä
Tasokäyristä refers to the process of creating contour lines on a map or diagram. These lines connect points of equal value, representing a continuous surface. In cartography, tasokäyristä is primarily used to depict elevation, with contour lines showing areas of the same altitude above sea level. The closer the contour lines are to each other, the steeper the terrain. Conversely, widely spaced lines indicate gentler slopes.
Beyond topographical maps, tasokäyristä can be applied to various fields. In meteorology, isobars are contour lines