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loglog - logarithmic plot

In this example we are going to demonstrate how to use the 'loglog' function included in Matlab to produce non-linear plots.

This term referrs to the fact that the plot is logarithmically scaled in both axes. There are other functions such as 'semilogx' and 'semilogy' which have one axis in linear scale and the other axis in logarithmic scale.

Example of a logarithmic graphic:

clear; clc; close all

% Define your independent variable
t = 0 : 2*pi/360 : 2*pi;

% Define values along your x-axis
x = exp(t);
% Define values along your y-axis
y = 50 + exp(3*t);

% Plot your function with a wider line and grid the figure
loglog(x, y, 'LineWidth', 2)
grid

% Use a title for the figure
title('Demonstration of logarithmic plots')

% Label your x-axis with a double line.
% Note the special characters
xlabel([{'e^{t}'}; {'0 \leq t \leq 2\pi'}])

% Label your y-axis
ylabel('50 + e^{3t}')

The produced figure is:

logarithmically scaled plot, produced with the Matlab function 'loglog'

From 'loglog' to home

From 'loglog' to '2D Plot Menu'

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2D summary

3D summary

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