MATLAB Answers

Add various horizontal lines to a plot

조회 수: 5,202(최근 30일)
FC93
FC93 2016년 10월 7일
댓글: Steven Lord 2021년 2월 11일
How can I add various horizontal lines to a plot?
I have a plot and now I want to add several horizontal lines. I would like to draw a horizontal line between x=-6 to x=-2 and another horizontal line between ×=3 and x=10.
Could someone show me a way to do it? Thank you.

채택된 답변

Marc Jakobi
Marc Jakobi 2016년 10월 7일
편집: MathWorks Support Team 2018년 11월 28일
If you want the line to have specific end points, you can use the line function. For example, this code draws a horizontal line at y = 5 between the points x = -6 and x = -2.
y = 5;
line([-6,-2],[y,y])
Starting in R2018b, you can use the xline and yline functions to draw vertical and horizontal lines, respectively. For example, this code draws a horizontal line at y = 5. The horizontal line extends in both the positive and negative directions with no end points.
yline(5)
For more information on the yline function, see: https://www.mathworks.com/help/matlab/ref/yline.html
  댓글 수: 5
Steven Lord
Steven Lord 2021년 2월 11일
plot(1:10)
h = yline(5, 'r--', 'LineWidth', 4);
You can change various properties of the line using its handle, or you can set those properties when the line is constructed like I did with the linespec ('r--') and the property names (LineWidth).

댓글을 달려면 로그인하십시오.

추가 답변(2개)

Massimo Zanetti
Massimo Zanetti 2016년 10월 7일
Horizontal line at what y coordinate? Fix y and then plot the line, for example if y=5:
x=1:12;
y=5;
plot(x,y*ones(size(x)))
  댓글 수: 2
Rolando Murilli
Rolando Murilli 2020년 8월 16일
Thanks!!

댓글을 달려면 로그인하십시오.


KSSV
KSSV 2016년 10월 7일
x=linspace(-6,-2,M) ;
%%y range
N = 50 ;
y = linspace(-5,5,N) ; % you have to select y range
for i = 1:N
xi = x ;
yi = y(i)*ones(size(xi)) ;
plot(xi,yi,'r')
hold on
end
x=linspace(3,10,M) ;
%%y range
N = 50 ;
y = linspace(-5,5,N) ;
for i = 1:N
xi = x ;
yi = y(i)*ones(size(xi)) ;
plot(xi,yi,'r')
hold on
end
xlim([-10 40])
  댓글 수: 1
FC93
FC93 2016년 10월 7일
Thank you for your help.

댓글을 달려면 로그인하십시오.

Community Treasure Hunt

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

Start Hunting!

Translated by