Countour plot vs parametir cplot plus#

The system variables involving graphics and their corresponding keywords are detailed in !PI. Changing the value of a system-variable field changes the default for that particular parameter and remains in effect until explicitly changed. When specifying a keyword parameter name and value in a call that value affects only the current call, the corresponding system-variable field is not changed. Note: Many of the keyword parameters correspond directly to fields in the system variables !P, !X, !Y, or !Z. MIN_CURVE_SURF interpolates the entire surface to a relatively fine grid before drawing the contours. This function replaces the older SPLINE keyword to CONTOUR, which was inaccurate and is no longer supported. The MIN_CURVE_SURF function can be used to smoothly interpolate both regularly and irregularly sampled surfaces before contouring. Smoothing ContoursĬontours can be smoothed by using the MIN_CURVE_SURF function on the contour data before contouring. CONTOUR draws contours by searching for each contour line and then following the line until it reaches a boundary or closes. Using various keywords, described below, it is possible to specify contour levels, labeling, colors, line styles, and other options. In more sophisticated applications, the output of CONTOUR can be projected from three dimensions to two dimensions, superimposed over an image, or combined with the output of SURFACE.

Countour plot vs parametir cplot plus#

In more complicated forms, CONTOUR accepts, in addition to z, arrays containing the x and y locations of each column, row, or point, plus many keyword parameters. In its simplest form, CONTOUR makes a contour plot given a two-dimensional array of z values. To create a contour plot with both filled contours and outlines, first create the filled contour plot, then add the outline contours by calling CONTOUR a second time with the OVERPLOT keyword. Note that outline and fill contours cannot be drawn at the same time. Both line contours and filled contour plots can be created. The CONTOUR procedure draws a contour plot from data stored in a rectangular array or from a set of unstructured points. Note: Please see the CONTOUR function, which replicates the functionality of this routine and offers an interactive interface.