Why Does My MATLAB Plot Show a Line Instead of a Point?

  • Context: MATLAB 
  • Thread starter Thread starter theBEAST
  • Start date Start date
  • Tags Tags
    Matlab Plot Point
Click For Summary

Discussion Overview

The discussion revolves around a MATLAB plotting issue where a user encounters a straight line instead of a point when plotting a column vector. The conversation explores potential solutions and methods for visualizing points in MATLAB plots, particularly in the context of a specific assignment.

Discussion Character

  • Technical explanation, Homework-related

Main Points Raised

  • One participant describes their issue with plotting a column vector and asks for help in resolving it.
  • Another participant suggests using the 'o' marker to display points instead of lines in the plot.
  • A subsequent reply reiterates the suggestion to use the 'o' marker but notes that the original poster must plot the column vector obtained from a calculation, which they have not detailed.
  • Another participant proposes plotting individual elements of the column vector to achieve the desired point representation.

Areas of Agreement / Disagreement

Participants present multiple approaches to the problem, but there is no consensus on the best solution, as the original poster's constraints are acknowledged but not fully resolved.

Contextual Notes

The discussion highlights limitations related to the original poster's assignment requirements and their unfamiliarity with extracting numbers from the column vector.

theBEAST
Messages
361
Reaction score
0
I have attached a picture of my problem to this thread. When I plot the column vector
x=[1;1]
I get a straight line instead of a point, does anyone know how to fix this?
 

Attachments

  • Capture.PNG
    Capture.PNG
    10.7 KB · Views: 631
Physics news on Phys.org
Code: 
plot(x,y);
where (x,y) is a point.

To show points, also:
Code: 
plot(x,y 'o');
 
jhae2.718 said:
Code: 
plot(x,y);
where (x,y) is a point.

To show points, also:
Code: 
plot(x,y 'o');

Thanks but for this assignment I have to plot the x column vector that I get from doing another calculation that I did not show. Maybe I can extract the numbers out of the column but we have not been taught that.
 
plot(x(1),x(2));

for multiple elements,
plot(x(1, :), x(2, :))
 

Similar threads

MATLAB [~,~,~,~,~,~,~,~,spec] Too many output arguments...
  • · Replies 5 ·
Replies
5
Views
3K
MATLAB How to Plot y=sin(x)/log(x) in MATLAB Without Imaginary Errors?
  • · Replies 11 ·
Replies
11
Views
3K
MATLAB Plotting Reaction Rate vs Temperature with MATLAB
  • · Replies 4 ·
Replies
4
Views
2K
MATLAB How to Plot a 4th Degree Polynomial in MATLAB: Step-by-Step Guide
  • · Replies 7 ·
Replies
7
Views
2K
MATLAB Getting Error When Plotting Graph (Using Python w/ matplotlib.pyplot)
  • · Replies 5 ·
Replies
5
Views
3K
MATLAB FEM, Matlab and the modes of an element
  • · Replies 32 ·
2
Replies
32
Views
4K
MATLAB Forcing the best fit line to pass through a certain point (Octave)
  • · Replies 12 ·
Replies
12
Views
7K
MATLAB Closed form not the same as the discrete form
  • · Replies 1 ·
Replies
1
Views
3K
MATLAB Replacing the "quad" function with "integral" doesn't work in Matlab
  • · Replies 1 ·
Replies
1
Views
3K
MATLAB MATLAB: Fluid Flow - Curl of a Vector Field
  • · Replies 2 ·
Replies
2
Views
4K