## How do you plot a function in octave?

octave#:#> plot(x,y,’b–‘,’linewidth’,3) will plot x and y as a thick, blue, dashed line. The next example consists in plotting two different functions on the same axis. Specifically, we will plot the functions f1(x) = sin(x) and f2(x) = sin(x2) from x = 0 to x = 2π, using equally spaced points on the x-axis.

## How do you plot data in octave?

Plot using Octave When plotting in Octave you plot points having their x -values stored in one vector and the y -values in another vector. The two vectors must be the same size. Octave inserts lines between the points. If you want a smoother graph, make a longer x -vector.

Can you plot a function in Matlab?

1. Use the plot command to plot the function f ( x ) = x 2 − 10 √ x + 2 for 0 ≤ x ≤ 5 . 2. Use the plot command to plot the function f ( x ) = ( 0.5 x 4 + 1.1 x 3 − 0.9 x 2 ) e − 0.7 x for − 3 ≤ x ≤ 10 .

How do you plot two graphs in octave?

Octave can display more than one plot in a single figure. The simplest way to do this is to use the subplot function to divide the plot area into a series of subplot windows that are indexed by an integer. For example, subplot (2, 1, 1) fplot (@sin, [-10, 10]); subplot (2, 1, 2) fplot (@cos, [-10, 10]);

### How is Octave different from Matlab?

MATLAB vs Octave are mainly used for the same purpose. The main difference is syntax and other features. Matlab consist of specialized toolboxes which are not part of Octave. The main goal of the octave is to give freedom to users to choose which software to use run their code.

### How do you plot two graphs in Octave?

How do you write an exp function in MATLAB?

Description. e z = e x ( cos y + i sin y ) . Use expm to compute a matrix exponential.

How do you plot an XY graph in MATLAB?

MATLAB – Plotting

1. Define x, by specifying the range of values for the variable x, for which the function is to be plotted.
2. Define the function, y = f(x)
3. Call the plot command, as plot(x, y)

## How to use plot legends in Matlab / Octave?

Basic Use of Plot Legends. The legend() function in MATLAB/Octave allows you to add descriptive labels to your plots. The simplest way to use the function is to pass in a character string for each line on the plot. The basic syntax is: legend( ‘Description 1’, ‘Description 2’, … ).

How to plot a function with two variables in octave or MATLAB?

Plotting a function of two variables would normally mean a 3-dimensional plot – in MATLAB you would use the function plot3 for that. To plot your function f(x,y) in the interval [-10,10] for both X and Y, you could use the following commands: x = [-10:.1:10]; y = [-10:.1:10];

How to generate octave spectrum in MATLAB timetable XT?

p = poctave (xt) returns the octave spectrum of a signal stored in the MATLAB ® timetable xt.

### How to generate an octave spectrum using poctave?

p = poctave (pxx,fs,f,Name,Value,’psd’) performs octave smoothing by converting a power spectral density, pxx, to a 1/ b octave power spectrum, where b is the number of subbands in the octave band. The frequencies in f correspond to the PSD estimates in pxx.