How to connect two plot line together?
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How to link the red line and blue line together?
3 个评论
Walter Roberson
2019-10-31
hold on
plot([last_x_of_red, first_x_of_blue], [last_y_of_red, first_y_of_blue])
hold off
for appropriate values of those variables.
If you do not have those values available, then it is possible to retrieve them from the existing graphics objects, but it is easier just to use values from existing variables.
Zeng Zhi Tee
2019-10-31
Walter Roberson
2019-10-31
Add last y of red minus first y of blue to all blue y.
It is difficult to tell by eye; there just might be a small x gap ae well that requires an x adjustment.
回答（1 个）
Subhadeep Koley
2019-11-4
编辑：Subhadeep Koley
2019-11-4
Hi, you can use the code below to connect the red line with the blue line directly without adding any third line.
% Demo figure for example
x =1:10;
y1 = 1:3;
figure;plot(x(1:3),y1,'r');
hold all;
y2 = 1:-1:-10;
plot(x(3:10),y2(1:8),'b');
axis([1 10 -5 5]);
hold off;
% Extract datas from the figure if you dont have the original data
fig = gcf;
axObjs = fig.Children;
dataObjs = axObjs.Children;
y1_fig = dataObjs(2).YData;
y2_fig = dataObjs(1).YData;
x1_fig = dataObjs(2).XData;
x2_fig = dataObjs(1).XData;
% Calculate the difference
differ = abs(y1_fig(end) - y2_fig(1));
y2_fig = y2_fig + differ;
% Plot the connected graph
figure;plot(x1_fig,y1_fig,'r');
hold all;
plot(x2_fig,y2_fig,'b');
axis([1 10 -5 5]);
hold off;
Hope this helps!
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2019-10-31
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