adding lines to a contour plot with labels

I want to produce something like this

But I'm not sure how- how might one add lines and labels to contor plots?

[Aakash]

Hi,

What I understand from your question is that you want to add line plots in a contour plot, for that:

1. Use the contour or contourf function to create the contour plot of your data.
2. To add lines to the contour plot, you can use the hold on command to enable multiple plot overlays. Then, use the plot function to draw the desired lines. (do this for each line)

for example:

hold on;

x_line = [x1, x2]; % x-coordinates of the line endpoints

y_line = [y1, y2]; % y-coordinates of the line endpoints

plot(x_line, y_line, '--');

3. To add labels to the contour plot, you can use the text function to place text at specific coordinates on the plot.

for example:

x_label = x_coordinate; % x-coordinate of the label

y_label = y_coordinate; % y-coordinate of the label

label_text = 'a'; % Text for the label

text(x_label, y_label, label_text, 'FontSize', 12, 'Color', 'black');

Answer 1

[KALYAN ACHARJYA]

x1 = -10:0; 
y1=10:-1:0; 
x2 = 0:10; 
y2=0:10; 
x3=zeros*(0:10);
y3=0:10;
plot(x1,y1,x2,y2,x3,y3,'--'); 
text(x1(round(length(x1)/2)),y1(round(length(y1)/2))+1,'a');
text(x2(round(length(x2)/2)),y2(round(length(y2)/2))+1,'c');
text(x3(round(length(x3)/2)),y3(round(length(y3)/2))+1,'b');

You can also create the corresponding function equation as per requirement since it have simple linear relationship.