matlab根据已知点数据绘制等⾼线,matlab中如何根据散点画
出等⾼线
A=[1.486,3.059,0.1;2.121,4.041,0.1;2.570,3.959,0.1;3.439,4.396,0.1;
4.505,3.012,0.1;3.402,1.604,0.1;2.570,2.065,0.1;2.150,1.970,0.1;
1.794,3.059,0.2;
2.121,
3.615,0.2;2.570,3.473,0.2;3.421,
4.160,0.2;
4.271,3.036,0.2;3.411,1.876,0.2;2.561,2.562,0.2;2.179,2.420,0.2;
2.757,
3.024,0.3;3.439,3.970,0.3;
4.084,3.036,0.3;3.402,2.077,0.3;
2.879,
3.036,0.4;3.421,3.793,0.4;3.953,3.036,0.4;3.402,2.219,0.4;
3.000,3.047,0.5;3.430,3.639,0.5;3.822,3.012,0.5;3.411,2.385,0.5;
3.103,3.012,0.6;3.430,3.462,0.6;3.710,3.036,0.6;3.402,2.562,0.6;
3.224,3.047,0.7;3.411,3.260,0.7;3.542,3.024,0.7;3.393,2.763,0.7];
x=A(:,1);y=A(:,2);z=A(:,3);
scatter(x,y,5,z)%散点图
figure
如何用matlab将已知点连线[X,Y,Z]=griddata(x,y,z,linspace(1.486,4.271)',linspace(1.604,4.276),'v4');%插值
pcolor(X,Y,Z);shading interp%伪彩⾊图
figure,contourf(X,Y,Z) %等⾼线图
x=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数
据.xls',1,'B4:B322');
y=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数
据.xls',1,'C4:C322');
z=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数
据.xls',2,'I4:I322');
[X,Y,Z]=griddata(x,y,z,linspace(0,28654)',linspace(0,18449),'v4');%插值
subplot(1,2,1),contourf(X,Y,Z) %等⾼线图
tri=delaunay(x,y);
subplot(1,2,2),trisurf(tri,x,y,z) %空间⽴体图
xlabel('x')
ylabel('y')
zlabel('元素Zn的含量')
title('元素Zn在整个城市的空间分布')
x=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数据.xls',1,'B4:B322');
y=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数据.xls',1,'C4:C322');
z=xlsread('C:\Documents and Settings\Administrator\桌⾯\cumcm2011A附件_数据.xls',1,'D4:D322');
[X,Y,Z]=griddata(x,y,z,linspace(0,28654)',linspace(0,18449),'v4'); %插值
[C,h] = contour(X,Y,Z);
clabel(C,h);

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。