markers not getting joined in plot

I came across strange problem in matlab, i did a simple line plot using following code in a loop. i want to draw the line joining the markers. in principal it ishing , but the plot is just showing markers not joined by the line. I also t style property seperately, but did not work. Wonder what is preventing matlab to draw the line in plot

plot(x,y,'--o')

[Bjorn Gustavsson]

When trying your example I get the expected dashed line. Perhaps try:

plot(x,y,'o-')

for a solid line.

[Sumera Yamin]

somehow, i am not getting any line, solid or dashed, i tried other way round like 'o-', but does not work. with a simple data, it does work, but in my lengthy code, it dont join the points. I wonder if something is preventing plot command to draw a line.

[Stephen23]

"I wonder if something is preventing plot command to draw a line."

Your code. My guess is that you are plotting scalar values in a loop, which will show individual markers unconnected by a line.

If you want to have markers joined by lines then you must provide plot with vectors/matrices of data.

In the unlikely event that you really are calling plot just once then please click the paperclip button to upload the exact data vectors/matrices that you call it with, all saved in one .mat file. And show us the exact code used.

[Sumera Yamin]

i see your point. It is true, i am plotting scalar values in a loop. Many thanks for your answer. @ Stephen, i am not getting the option to accept your answer

Answer 1

[Stephen23]

You are plotting scalar values in a loop, which will show individual markers unconnected by a line.

If you want to have markers joined by lines then you must provide plot with vectors/matrices of data.

In practice this means

• within the loop use indexing to add the data to a vector/matrix,
• after the loop call plot once with that complete vector/matrix.

[Sumera Yamin]

Thanks

[Steven Lord]

Another alternative would be to create an animatedline before the loop and addpoints to it inside the loop.

axis([0 360 -1 1]);
h = animatedline;
for x = 0:360
    addpoints(h, x, sind(x))
    drawnow expose
end

You can specify property values for animatedline like Marker, LineStyle, Color, etc. when you create it.

Answer 2

[KSSV]

plot(x,y,'o',x,y,'-')

Or

plot(x,y,'-o')

Or

plot(x,y,'o')
hold on
plot(x,y)

[Sumera Yamin]

thanks, tried this. doesnt help

[KSSV]

x = 1:10 ;
y = rand(size(x)) ;
plot(x,y,'-o')

Show the output.