搜搜考试网matlab利用公式绘图
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matlab利用公式绘图
画出C=4,2,1.5,1.2,1.15,1.10,1.05,1.026,0.95,0,9,0.8,0.6,0.4,0.2,0.1时的等值线图（contour函数）,画出来的图与下图类似：
[c,h]=contour(x,y,C[0.01,0.2,0.4,0.6,0.8,0.9,0.95,0.974,1.026,1.05,1.1,1.15,1.2,1.2105,1.3,1.4,1.5,2,4]);
clabel(c,h）;
画出C=4,2,1.5,1.2,1.15,1.10,1.05,1.026,0.95,0,9,0.8,0.6,0.4,0.2,0.1时的等值线图（contour函数）,画出来的图与下图类似：
[c,h]=contour(x,y,C[0.01,0.2,0.4,0.6,0.8,0.9,0.95,0.974,1.026,1.05,1.1,1.15,1.2,1.2105,1.3,1.4,1.5,2,4]);
clabel(c,h）;
clc,clear
close all
x = 1; y = 1;
n = -2:2;
x =1 ;y = 1;
[x y ] = meshgrid(0:.01:0.32,-0.4:.01:0.6);
k = 0;l = 0;
[row col] = size(x);
for ii = 1:row
for jj = 1:col
c(ii,jj) = sum(su(-2:2,x(ii,jj),y(ii,jj)));
end
end
[c,h] = contour(c,8);figure(gcf);
set(h,'ShowText','on','TextStep',get(h,'LevelStep')*2)
colormap cool