interpolate data in matlab

In MATLAB, data can be interpolated using the interp1 function. This function uses various methods such as Linear, Cubic, and Spline to interpolate data as per our requirement. The syntax for this function is as follows:

main.m
Vq = interp1(X,V,Xq)
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where X and V are the domain and range of the data points, Xq is the query points where we need to interpolate the data, and Vq is the interpolated data points.

Here's an example:

main.m
% Define the data points
X = 1:10;
V = sin(X);

% Define the query points
Xq = 1:0.1:10;

% Interpolate the data and plot the results
Vq = interp1(X,V,Xq,'spline');
plot(X,V,'o',Xq,Vq);
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This code generates the following plot:

Here, we have used the 'spline' method for interpolation. We can change it to other methods such as 'linear' or 'cubic', depending upon the nature of our data.