may I ask why I cannot get the label [0.8 0.5 0.25 0.1]?

clc;%清理命令行窗口

clear all;%清理工作区

%读取excel数据，同目录下

tx=xlsread('co.xlsx');

tx(:,1)=[];

tx(32,:)=[];

z=tx;

figure(1)

pcolor(z)

shading interp;

colorbar; colormap(jet);

xlabel('W1');ylabel('W2');

hold on;

title('C0')

contour(z,[0.8 0.5 0.25 0.1],'b--');

clabel(z,'LabelSpacing',1, 'FontSize', 10, 'Color', 'k');

hold off;

Answer 1

[Ritish Sehgal]

It is my understanding that you want to label those data points [0.8 0.5 0.25 0.1] over your contour plot.

There is a property named ‘ShowText’ which needs to be set to ‘on’ in order to achieve that. So, you need to pass this name-value pair to you contour function as an argument to get those points labelled on your plot.

I have attached a link below which has a very similar example of how to pass that property to the contour function:

https://in.mathworks.com/help/matlab/ref/contour.html#mw_b151d85c-790a-473b-b27c-e6c68a9de0a3

Hope it helps!!