Continuous plot(x,y) for discrete data points

When using plot(x,y) function, [say for example x = 1X20 matrix and y=sin(x), which means that there are only 20 data points), matlab plot comes out to be a continuous one. Is this always the case? I just started using matlab.

[Chandeesh]

Select the functions to represent the graph of a continuous and a discrete function.

Answer 1

[Azzi Abdelmalek]

You can use plot for continuous plot, or stem function for discrete plot. You can also use scatter function

Example

x=0:10
y=sin(x)
plottx,y);
figure
stem(x,y);
figure
scatter(x,y)

[Vineet]

Thank you Azzi. The stem plot is cool, especially for statistics!

[Azzi Abdelmalek]

for statistics, maybe you need to look at

doc hist
doc bar

Answer 2

[Sean de Wolski]

plot is just connecting the points with lines. If you don't want this, you can specify the marker. For example, for a red *

>> plot(0:0.1:2*pi,sin(0:0.1:2*pi),'r*')

And for more info:

doc plot

[Vineet]

Thank you, Sean. That was very helpful. I tested with and without markers (default). Works great!

Answer 3

[Anil]

i only have one point for x and y how can i generate a continuous plot for this