Mapping Routines

MAP

Plots a map.

MAP_CONTOUR, z [, x, y]

Draws a contour plot from longitude/latitude data stored in a 2D array.

MAP_LAND(r)

For each map pixel, identify longitude, latitude, and cover type.

MAP_PLOTS, x, y

Plots vectors or points (specified as longitude/latitude data) on the current map projection.

MAP_POLYFILL, x, y

Fills the interior of a region of the display enclosed by an arbitrary 2D polygon.

MAP_REVERSE, x, y, lon, lat

Converts output from routines like CURSOR and WtPointer from device, normal, or data coordinates to longitude and latitude coordinates.

MAP_VELOVECT, u, v, [, x, y]

Draws a two-dimensional velocity field plot on a map, with each directed arrow indicating the magnitude and direction of the field.

MAP_XYOUTS, x, y, string

Draws text on the currently selected graphics device starting at the designated map coordinate.

USGS_NAMES ( [name] )

Queries a database containing names, FIPS codes, and longitude/latitude values for cities and towns in the United States. Plots a map.