Level Curves and Contour Plots Level curves and contour plots are another way of visualizing functions of two variables If you have seen a topographic map then you have seen a contour plot Example To illustrate this we first draw the graph of z = x2 y2 On this graph we draw contours, which are curves at a fixed height z = constantGraphs of Surfaces and Contour Diagrams 3 Together they usually constitute a curve or a set of curves called the contour or level curve for that value In principle, there is a contour through every point In practice, just a few of them are shown The following is the contour diagram for the earlier surface 0 0 0 0 0 0 0 2 2You can create a contour plot with emphasis on selected contour lines by splitting the data and creating two overlapping contour plots Change Fill Colors for Contour Plot This example shows how to change the colors used in a filled contour plot Highlight Specific Contour Levels This example shows how to highlight contours at particular levels
Help Online Tutorials Contour Plots And Color Mapping
