Detailed explanation of the MATLAB plotyy function.

2 years ago
Isabella Edwards
2 minutes

The plotyy function in Matlab is used for plotting two different datasets on the same graph, allowing them to be displayed on separate y-axes.

The basic syntax of the plotyy function is:

plotyy(x1, y1, x2, y2)

Here, x1 and y1 are the x and y-axis data of the first dataset, and x2 and y2 are the x and y-axis data of the second dataset.

The plot created using the plotyy function will automatically generate two y-axes, with the first dataset plotted on the left y-axis and the second dataset plotted on the right y-axis.

In addition to basic grammar, the plotyy function also supports some optional parameters for setting the style and properties of the graph, for example:

  1. ‘LineStyle’: specifies the type of line for the curve, which can be solid (“-“) or dashed (“–“) and so on.
  2. ‘Color’: Define the color of the curve.
  3. ‘Marker’: The symbol used to represent points on a curve, such as a circle (“o”) or asterisk (“*”).
  4. ‘Set the size of the marker symbols for the curve.’
  5. ‘Parent’ refers to the specified parent object for drawing, which can be a figure object or an axes object.

Here is an example code utilizing the plotyy function to plot two data sets.

x = linspace(0,10,100);
y1 = sin(x);
y2 = cos(x);

[ax, h1, h2] = plotyy(x, y1, x, y2);
xlabel('x');
ylabel(ax(1), 'sin(x)');
ylabel(ax(2), 'cos(x)');
title('Plotyy Example');

This code will plot a graph with two curves, where the left y-axis shows the curve of sin(x) and the right y-axis shows the curve of cos(x). The graph also includes x-axis labels, y-axis labels, and a title.

In summary, the plotyy function in Matlab is used to plot two sets of data on separate y-axes. Different styles and properties of the curves can be set using optional parameters.

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