Some provide more detail and may require larger sets of detailed information (e.g. isopleth-based maps).

For example, a GIS can quickly generate a map with lines that indicate rainfall amounts.

For example, a GIS can easily generate a map with isopleth or contour linesthat indicate different amounts of rainfall.

The Tanaka method applies a northwest light source to a contour map.

For example, a GIS can quickly generate a map with isopleth or contour lines that indicate differing amounts of rainfall.

Contour lines facing the light source are drawn in white while those in the shadow are drawn in black.

(d) for each contaminant, maps showing the modeling calculation results in the form of isopleth curves for each year of calculation;

Once plotted on a map, an analysis of isotachs (lines of equal wind speeds) can be accomplished.

Already before this time a few contours had occurred in maps, but Cruquius was the first to bring the so-called isolines method in practice to link up a complex of bathymetric contours.

A two-dimensional contour map created from the surface modeling of rainfall point measurements may be overlaid and analyzed with any other map in a GIS covering the same area.