How to insert arrows at the middle of each of the parallel lines

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In the follwoing I want to insert arrows at the middle of each of the parallel lines
p = 0.01:.05:1;
figure(1)
plot([0; 1],[p; p], 'color','b');
x = [0.3,0.5];
y = [p,p+0.1];
a = annotation('arrow',x,y);
How to do that ? But my code does not work
  3 Commenti
Atom
Atom il 7 Lug 2020
Modificato: Atom il 7 Lug 2020
The example is like this. I have to draw parallel lines to x-axis and insert arrows like the fig in the middle of the each line.

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KSSV
KSSV il 8 Lug 2020
Modificato: KSSV il 8 Lug 2020
Why annotation for this? You can use quiver. Play around with the below code.
clc; clear all ;
p = 0.01:.05:1;
x =[0;1] ;
y = [p ;p] ;
x1 = repmat(0.5,1,20);
y1 = p ;
u1 = -0.2*ones(size(y1)) ;
v1 = zeros(size(x1)) ;
figure(1)
hold on
plot(x,y, 'color','b');
quiver(x1,p,u1,v1)
quiver(x1+0.1,p,u1,v1)
  3 Commenti
KSSV
KSSV il 8 Lug 2020
That would be tough using quiver...but you can try changing the width of the arrow, read the documentation.

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Più risposte (1)

Mehmed Saad
Mehmed Saad il 7 Lug 2020
Modificato: Mehmed Saad il 7 Lug 2020
  2 Commenti
Atom
Atom il 7 Lug 2020
Thank you but it is not what I need. I have to draw parallel lines to x-axis and insert arrows like the fig in the middle of the each line as shown in the fig above.

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