Credit: BoredPanda Theyâre called HB rings and theyâre created by TheTouch. The minimalist designs are made from stainless steel and thereâs also a solid ros... Skip navigation
Contour lines normally connect areas with equal data values, so may generally be called isolines or isopleths-lines of the same value. Normally, the primary set of contour lines is displayed as a solid line, while the secondary contour is displayed as a &shed line. For example, a standard 850-hPa, 24-hour prognosis chart has height contours in solid lines, temperature contours in dashed lines, and wind speed and direction as plotted data.
The contour interval of a contour map is the difference in elevation between successive contour lines. More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value.The gradient of the function is always perpendicular to the contour lines. contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value.