【MATLAB函数pcolor()】伪彩色图是单元格的矩形阵列, 其颜色由C保留。
句法
pcolor(C) // It draw a pseudocolor plot. The items of C are linearly mapped to an index into the current colormap.pcolor(X, Y, C) // It draw a pseudocolor plot of the items of C at the locations stated by X and Y. The plot is the logically rectangular, two-dimensional grid with vertices at the points [X(i, j), Y(i, j)]. h = pcolor(...) // It returns a handle to a surface graphic object.例子
z^2=x^2+y^2-5 sin?(xy)|x|≤2, |y|≤2.r=-2: .2:2;
[X, Y]= meshgrid (r, r);
Z=X.^2- 5*sin(X.*Y)+Y.^2;
pcolor(Z), axis('off')shading interp输出
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