Line drawing

3 次查看（过去 30 天）
K BV
K BV 2012-4-11
Hi,
I would like to draw 12 lines linking two endpoints pt_orth_int and pt_orth_ext, for that I wrote this part of code :
for i=1:12
xx(i,:) = [pt_orth_int(i,2) pt_orth_ext(i,2)];
yy(i,:) = [pt_orth_int(i,1) pt_orth_ext(i,1)];
line(xx(i,:),yy(i,:),'LineWidth',2,'Color','y');
end
The problem I have is only the 12th line was drawn in my figure and not the totality of them. I think it is a problem of overwriting, would you please help me to fix it ?
Thank you !

请先登录，再回答此问题。

回答（3 个）

Image Analyst
Image Analyst 2012-4-11
Try putting this code in the loop after the call to line().
if i == 1
hold on;
end
Jan
Jan 2012-4-11
The line command handles matrices also:
xx = [pt_orth_int(1:12, 2), pt_orth_ext(1:12, 2)];
yy = [pt_orth_int(1:12, 1), pt_orth_ext(1:12, 1)];
line(xx, yy, 'LineWidth', 2, 'Color','y');
Perhaps xx and yy must be transposed - I cannot test this currently.
K BV
K BV 2012-4-11
I added the "hold on" statement where did suggest Image Analyst and used the matrices xx and yy as suggested by Jan Simon.
Now I have all my lines and I can finish my tracking program :)
Thank you again !

类别

在 Help Center 和 File Exchange 中查找有关 Creating, Deleting, and Querying Graphics Objects 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by