Anyway to plot one point

Is there anyway in Matlab to plot one point?

For example: plot(1,2) returns simply a blank plot

[per isakson]

Try

plot(1,2,'d')

Answer 1

[Nicholas Ayres]

I'm a bit late to the party, BUT...

The issue this person is having is that the default plot type is just a "line" which connects points together. If there is only one point, it has nothing to connect it to. You need to add a marker.

Using any of the following characters after your x,y coordinates will produce these markers on your plot:

'o','+','*','.','x','s','d','^','v','>','<','p',h'

E.g.

plot(1,2,'.')

will just plot a dot at (1,2). You can combine this with line styles and colors to get a lot of variety in your plots. (my favourite is '.-', which puts dots at all the points and connects them together)

Read the documentation: https://uk.mathworks.com/help/matlab/ref/plot.html

Specifically the section on "LineSpec" if you're short on time. It's worth the read as this provides a very simple way to pretty up your graphs a bit (and explains what the character inputs I listed above represent. This is the most common plotting method you're going to use and the syntax for the "LineSpec" works with a myraid of other plotting types, so it's worthwhile to know what's going on.

Answer 2

[Sajeer Modavan]

scatter(1,2)

Answer 3

[MathWorks Support Team]

By default, “plot” displays a line between two or more points with no markers. When there is only one point, nothing displays unless you specify a marker. To display a marker at one point, call the “plot” function and specify the marker using the “LineSpec” argument. For example, display the point (1,2) using a circular marker:

x = 1; 
y = 2; 
plot(x,y,"o")

You can select from a variety of different markers. For a full list, see the "Marker" property of the “Line” object.

Alternatively, call the “scatter” function, which displays a circular marker at the specified location by default:

scatter(x,y) 

Answer 4

[MathWorks Support Team]

By default, “plot” displays a line between two or more points with no markers. When there is only one point, nothing displays unless you specify a marker. To display a marker at one point, call the “plot” function and specify the marker using the “LineSpec” argument. For example, display the point (1,2) using a circular marker:

x = 1; 
y = 2; 
plot(x,y,"o")

You can select from a variety of different markers. For a full list, see the "Marker" property of the “Line” object.

Alternatively, call the “scatter” function, which displays a circular marker at the specified location by default:

scatter(x,y)