MATLAB 2D Semilogy()

The MATLAB function semilogy() is used to plot data with a logarithmic y-axis. This function is particularly useful for visualizing data that spans a large range of magnitudes.

Syntax

The syntax for using semilogy() in MATLAB is as follows:

semilogy(X, Y)

where X and Y are vectors of the same length representing the x and y coordinates of the data points.

Example

% Create some sample data
x = linspace(0, 10, 100);
y = 10.^(-x);

% Plot the data with semilogy()
semilogy(x, y);

% Add axis labels and a title
xlabel('x');
ylabel('y');
title('Example of a Semilogarithmic Plot');

This example creates a vector x with 100 equally spaced values between 0 and 10, and a corresponding vector y with values that decrease exponentially with x. The semilogy() function is then used to plot this data with a logarithmic y-axis. The resulting graph shows the exponential decrease in y over a wide range of magnitudes.

Conclusion

In conclusion, the semilogy() function in MATLAB is a powerful tool for visualizing data with a logarithmic y-axis. Its simple syntax and flexibility make it a great choice for a wide range of applications.