An introduction to the Noise Rating (NR) curves developed by the International Organization for Standardization (ISO).

These contour lines are composed of portions of parallel curves and arcs of circles, and are interesting because they form a partition of the plane, as opposed to parallel curves.

In order to avoid large earthworks, the building sits along level lines.

Sometimes, this “problem” is solved by adding interval lines between the contour lines.

Detailed topographic maps show the terrain, level curves and steet names.

As mentioned above, the contour lines are brown-colored, as are their respective elevation numbers.

This perspective is accentuated by the orientation of the ridge - typical of the region, parallel to contour lines.

This village whose houses align the contour is typical of the architecture of the uplands.

A floor covering where undulations evoking of the level lines shapes recovers the whole of the mezzanine.

The invention further relates to a method for providing different gray level curves (33-36) representing different voltage characteristics supplied to a display device (11).

The Domaine Belles Courbes owes its name to the planting method used in curves (courbes) on levels, snaking around three hills, with the goal of avoiding soil erosion and achieving maximum sun exposure.

Photogrammetrists can collect data on everything they see (hydrography, roads, houses, contour lines, etc.).

Mr. Mpawenayo asked the people to draw the contour lines and plant fixing herbs.

If nz is an integer, its value gives the number of level curves equally spaced from zmin to zmax as follows:

contour2d draws level curves of a surface z=f(x,y) on a 2D plot.