![]() That the hidden side can be seen, potentially revealing more from a single graphic.Ĭontour is similar to surf and mesh in that it takes three arguments, x, y and z if it differs in that it produces a 2D plot.Ĭontour(x,y,z,N) where N instructs MATLAB how many contours to produce if omitted, MATLAB will determine the number of contours based on the variance of the z data. Mesh produces a graphic similar to surf but with empty space between grid points. In the code above, i is the row iterator which corresponds to y and j is the column iterator, corresponding to x.This is true of all 3D plotting functions that draw matrix data.If =size(z), then length(y) must be M and length(x) must be N.The x and y arguments of surf must match the dimensions of the z argument.Shading interp changes how the colors are applied from a discrete to grid to a continuous grid. We will use a bivariate gaussian pdf with mean 0 and covariance. In the next graphics (surf, mesh contour) tools all plot a matrix of z data against vector of x and y data. Title('Scatter plot of correlated normal random variables') įormatting, such as color or market shape can only be changed by either using handle graphics or manually editing the plot. ![]() It produces a scatter plot of the elements of a vector x against the elements of a vector y. With “figure(2)” we are creating a new figure graphics object where to plot. Plot3 plots a series against two other series in 3-space. If we type only plot(y), it will plot the data in vector y against a simple series which labels each observation 1, 2. If not use format string MATLAB will automatically create on.
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