Surface plot - MATLAB surf (2024)

FAQs

How to plot response surface in MATLAB? ›

To create a response surface plot, you have to provide Z as a matrix. Specifically, if two vector arguments X & Y defined such that length(X) = n and length(Y) = m then, size(Z) should be [m,n]. In order to plot the vertices of the surface patches as the triples (X(j), Y(i), Z(i,j)).

The ezsurf function does not plot points where the mathematical function is not defined. These points are set to NaN so that they do not plot. Use surf to plot the same data without filtering discontinuities.

The reason you get a surface that's all black is that the grid is too fine, so all you see are the black lines between grid cells. To fix it you can use a coarser grid, if that's an option, or you can turn the grid lines off by specifying 'EdgeColor','none' when the surface is created (or after it's created).

mesh produces wireframe surfaces that color only the lines connecting the defining points. surf displays both the connecting lines and the faces of the surface in color. The figure colormap and figure properties determine how MATLAB colors the surface.

Set the properties to a scalar value in the range [0,1] . A value of 0 means completely transparent, a value of 1 means completely opaque, and values between 0 and 1 are semitransparent. Patch, surface, scatter, and image objects support using alpha data to vary the transparency across the object.

Introduction. Surface plots are diagrams of three-dimensional data. Rather than showing the individual data points, surface plots show a functional relationship between a designated dependent variable (Y), and two independent variables (X and Z). The plot is a companion plot to the contour plot.

Create Chart

Choose the 'Type' of trace, then choose '3D Surface' under '3D' chart type. Next, fill out the necessary 'X', 'Y' and 'Z' values from their respective dropdown menus. This will create a 3D surface, as seen below.

MATLAB^® graphics defines a surface by the z-coordinates of points above a rectangular grid in the x-y plane. The plot is formed by joining adjacent points with straight lines. Surface plots are useful for visualizing matrices that are too large to display in numerical form and for graphing functions of two variables.

What is the surface plot of a function? ›

A Surface Plot is a representation of three-dimensional dataset. It describes a functional relationship between two independent variables X and Z and a designated dependent variable Y, rather than showing the individual data points. It is a companion plot of the contour plot.

Default 2-D and 3-D Views

MATLAB automatically selects a viewpoint that is determined by whether the plot is 2-D or 3-D: For 2-D plots, the default is azimuth = 0° and elevation = 90°. For 3-D plots, the default is azimuth = -37.5° and elevation = 30°.

MATLAB® uses a default color scheme when it displays visualizations such as surface plots. You can change the color scheme by specifying a colormap. Colormaps are three-column arrays containing RGB triplets in which each row defines a distinct color.

To create impulse plots with default options or to extract impulse response data, use impulse . h = impulseplot( sys ) plots the impulse response of the dynamic system model sys and returns the plot handle h to the plot. You can use this handle h to customize the plot with the getoptions and setoptions commands.

H = plotCCDF(___,Name=Value) , additionally you can use the name-value arguments of the plot function to customize the configuration of the CCDF plot. For example, plotCCDF(meter,LineWidth=2) plots the CCDF curves with a line width of 2 points.

surfc( X , Y , Z ) creates a three-dimensional surface plot with a contour plot underneath. A surface plot is a three-dimensional surface that has solid edge colors and solid face colors. The function plots the values in matrix Z as heights above a grid in the x-y plane defined by X and Y .

Fit a response surface model to the data by clicking the Analyze button below the trial-and-error data or the Response Surface button below the experimental data. Both buttons load the data into the Response Surface Tool rstool .