How do you plot a line 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.

How do you plot equations 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 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 do you hold on in octave?

Toggle or set the “hold” state of the plotting engine which determines whether new graphic objects are added to the plot or replace the existing objects. Retain plot data and settings so that subsequent plot commands are displayed on a single graph. Line color and line style are advanced for each new plot added.

How do I plot a sine wave in Matplotlib?

Example:

1. import numpy as np.
2. import matplotlib.pyplot as plot.
3. # Get x values of the sine wave.
4. time = np.arange(0, 10, 0.1);
5. # Amplitude of the sine wave is sine of a variable like time.
6. amplitude = np.sin(time)
7. # Plot a sine wave using time and amplitude obtained for the sine wave.
8. plot.plot(time, amplitude)

How do you make a scatter plot in octave?

If the first argument hax is an axes handle, then plot into this axis, rather than the current axes returned by gca . The optional return value h is a graphics handle to the created scatter object. Example: x = randn (100, 1); y = randn (100, 1); scatter (x, y, [], sqrt (x.

What are some examples of plots in octave?

Note that the last semicolon is required and Octave will generate an error if it is left out. Here are some plot examples: plot (x, y, “or”, x, y2, x, y3, “m”, x, y4, “+”) This command will plot y with red circles, y2 with solid lines, y3 with solid magenta lines, and y4 with points displayed as ‘ + ’.

What are the properties of a line in octave?

Multiple property-value pairs may be specified, but they must appear in pairs. These arguments are applied to the line objects drawn by plot. Useful properties to modify are “linestyle” , “linewidth”, “color”, “marker” , “markersize”, “markeredgecolor”, “markerfacecolor” . See Line Properties .

Do you need to plot legend in octave?

If the handles, hobjs, are not specified then the legend’s strings will be associated with the axes’ descendants. legend works on line graphs, bar graphs, etc. A plot must exist before legend is called. The optional parameter pos specifies the location of the legend as follows:

How to plot a sine wave in octave?

Octave has lots of simple tools that we can use for a better understanding of our algorithm. In this tutorial, we are going to learn how to plot data for better visualization and understanding it in the Octave environment. Example 1 : Plotting a sine wave using the plot () and and sin () function: