How to create moving text

Is it possible to create a moving text along with a line??

Answer 1

[Jonas]

you can move the text every now and then by changing the coordinates. e.g.

data=randi(42,100,1);
m=mean(data);

plot(data);
yline(m);
tx=text(1,1.1*m,'some text','Color','r');

for xCor=2:80
    tx.Position=tx.Position+[1 0 0];
    pause(0.1)
end

[Rajawarman Thiruselvam]

for example this is program below, how can i add moving text along with animated line

clear all

close all

clc

figure

h = animatedline('marker','o','color','b');

axis([1 10 1 7])

axis ij

grid on

x=1:4;

n = 100;

xx=linspace(x(1),x(end),n);

y = [1 1 2 1];

yy = interp1(x,y,xx);

for ci=1:n

addpoints(h,xx(ci),yy(ci));

pause(0.03);

drawnow

end

[Jonas]

similarily to this

h = animatedline;
axis([0,4*pi,-1,1])

x = linspace(0,4*pi,1000);
y = sin(x);
tx=text(x(1),1.1*y(1),'lead');
for k = 1:length(x)
    addpoints(h,x(k),y(k));
    tx.Position=[x(k),1.1*y(k)]
    drawnow
end

[Rajawarman Thiruselvam]

tx=text(x(1),1.1*y(1),'lead')

can you please explain this??

[Rajawarman Thiruselvam]

and this ??

tx.Position=[x(k),1.1*y(k)]

[Jonas]

tx=text(x(1),1.1*y(1),'lead');

creates the text label 'lead' near x(1) and y(1). i used 1.1*y(1) to be sure that the label is not exactly on the point of the curve i want to label but a bit above

similarly i use a slightly bigger y when i move the label according to the further points of the curve