contourf Filled two-dimensional contour plot Syntax contourf(Z) contourf(Z,n) contourf(Z,v) contourf(X,Y,Z) contourf(X,Y,Z,n) contourf(X,Y,Z,v) = contourf(...) Description A filled contour plot displays isolines calculated from matrix Z and fills the areas between the isolines using constant colors. The color of the filled areas depends on the current figure's colormap. contourf(Z) draws a contour plot of matrix Z, where Z is interpreted as heights with respect to a plane. Z must be at least a 2-by-2 matrix. The number of contour lines and the values of the contour lines are chosen automatically. contourf(Z,n) draws a contour plot of matrix Z with n contour levels. contourf(Z,v) draws a contour plot of matrix Z with contour levels at the values specified in vector v. contourf(X,Y,Z) , contourf(X,Y,Z,n) , and contourf(X,Y,Z,v) produce contour plots of Z using X and Y to determine the x - and y -axis limits. When X and Y are matrices, they must be the same size as Z, in which case they specify a surface as surf does. = contourf(...) returns the contour matrix C as calculated by the function contourc and used by clabel, a vector of handles h to patch graphics objects, and a contour matrix CF for the filled areas. Remarks If X or Y is irregularly spaced, contourf calculates contours using a regularly spaced contour grid, then transforms the data to X or Y. Examples Create a filled contour plot of the peaks function. = contourf(peaks(20),10); colormap autumn See Also clabel , contour , contour3 , contourc , quiver Contour Plots for related functions 土壤湿度等值线