A moving line plot between two points in MATLAB figure

Hi everyone, I need help to do an animated line for known coordinates

For example: (x1,y1),(x2,y2),(x3,y3) are known variables

here i want the point should be moving slowly from x1,y1 to x3,y3 via x2,y2

How can i do this??

Answer 1

[Amit Bhowmick]

For large number of iteration use loop accordingly.

clearvars
close all
clc

x1=0.1;y1=0.2;
x2=0.3;y2=0.4;
x3=0.5;y3=0.6;
hold on
frm=[];
axis([0 1 0 1])
plot(x1,y1,'o')
frm=[frm getframe()];
plot([x1 x2],[y1 y2])
frm=[frm getframe()];
plot(x2,y2,'o')
frm=[frm getframe()];
plot([x2 x3],[y2 y3])
frm=[frm getframe()];
plot(x3,y3,'o')
frm=[frm getframe()];
movie(frm,3,1)

[Rajawarman Thiruselvam]

can you please give me an another example using loops??

[Amit Bhowmick]

clearvars
close all
clc

hold on
frm=[];
axis([-2 12 -2 120])
x=0:0.5:10;
y=x.^2;
for ii=1:length(x)
    plot(x(ii),y(ii),'o')
    frm=[frm getframe()];
end
movie(frm,1,12)

Answer 2

[Rajawarman Thiruselvam]

frm=[];

frm=[frm getframe()];

can you please explain this??

[Amit Bhowmick]

frm=[] creats an emty varriable with size 0x0.

getframe() capture the current plot and store the frame adding one more extra column to frm with [frm getframe()].

check this following thing to understand this operation:

a=[1 2 3 4];

a=[a 3]