How To Make A 3d Plot In MatlabThen plot them as a surface. To plot a 3D surface from a data file in MATLAB, you will need to have the data file open in MATLAB. Learn more about 3d plots, surf, mathematics, fluid mechanics MATLAB, MATLAB Coder, MATLAB and Simulink Student Suite I am relatively new to matlab and I am trying to make a 3d plot using two functions, Q and W which both rely on the variable eta. how to create legend from neighboring column in 3d plot. For a "3-d plot", you would need an n x m x l array. Yes, you can create a plane that intersects the 3D curves and then display the intersection points on the plane. The general syntax to display the 3D plot is,. Do you want a curve, with any one tuple (x,y,z) representing a point on the curve? – Alok Singhal Dec 31, 2009 at 15:55 Add a comment 4 Answers Sorted by: 218. If you surf with all x y z you are going to place the points back to their respective 3D positions. Plot three sine curves with a small phase shift between each line. How to Graph 3D Data Inside Excel. I want to make a 3D PCA plot with the first three principal components and to have a 95% confidence ellipsoid for each class (label). 5 MATLAB 3D Plot Examples Explained with Code and Colors. It is the z matrix that you plot either as a 2D image (values of z are represented by colors) or a 3D plot (values of z are represented as heights along the z-axis). Getting Started With MATLAB Plotting Installing And Setting Up MATLAB Online Before you can start painting your data masterpiece, you'll need to set up your digital canvas. Learn the Examples of Matlab 3d scatter plot. But this is just the beginning of your data visualization journey. The surface plot uses Z for both height and color. Matlab plots data, not functions. For a 3D patch, you need 4 arguments: patch( x, y, z, c ). You can also use the surf command to create a 3D surface plot. Stacking multiple 2D plots into a single 3D plot in MATLAB. How to plot XYZ data in 3D – Surface, WireFrame and MESH MESH Graph (Surface/Wireframe) Method 1: DIY – Placing Values Before you can graph a surface graph in Excel you need to know how to format your data. We can give two or three input vectors to the scatter3 () function. How to make a 3D scatter plot. 1:5); % give the expression for x % and y for the output in z. PLOT3 (Line Plots) Plot3 helps in creating 3D lines or Point Plots. 3d line plots in MATLAB">3d line plots in MATLAB. 3-D function to plot, specified as a function handle to a named or anonymous function. Read about the "plot3" function in the MATLAB documentation. Simply follow the step-by-step instructions to create an account, and you'll be up and running in no time. How to make 3D PCA plot with 95% ellipsoids in MATLAB. 3D Plots in Matlab Learn how to plot graphs in MatlabIn this tutorial we will create a 3D plot in Matlabsurf(Z) creates a three-dimensional shaded surface fr. 3D MATLAB Plot Introduction In general, the three-dimensional plots consist of the three vectors (x,y,z) in the same graph. Define your 3D points and curves. Creating Interactive 3D Plots in Matplotlib. MATLAB TUTORIAL for the second course: 3D …. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In. 13K subscribers 3D Plots in Matlab Learn how to plot graphs in Matlab In this tutorial we will create a 3D plot in Matlab surf (Z) creates a three-dimensional shaded surface from. Plotting Multivariate Equations In MATLAB. 3d surface plots in MATLAB">3d surface plots in MATLAB. See intersect and friends as well Sign in to comment. We investigate the concept of how to generate a discrete representation of a continuous, 3D function before looking at. graph_objects as go import numpy as np x = np. How can I make a "color map" plot in matlab?. For plotting the mesh plot it has mesh () which will generate the 3d surface. The surface plot uses Z for both height and color. I will provide a general outline of the steps you can. Plot a 3D Contour in MATLAB. To plot multiple sets of coordinates on the same set of axes, specify at least one of X, Y, or Z as a matrix and the others as vectors. Plot3 (x,y,z): If x,y,z are vectors of the same length, then this function will create a set of coordinates connected by line segments. This tutorial illustrates how to generate 3D plots in Matlab. Here's an example to help you get started: Theme Copy % Define your 3D points and curves (dummy example) curve1 = [1 2 3; 2 3 4; 3 4 5]; curve2 = [5 4 3; 4 3 2; 3 2 1]; % Define the plane equation: Ax + By + Cz + D = 0 A = 1; B = 1; C = 1; D = -6;. from mpl_toolkits import mplot3d After importing mplot3d, we need to create a. To plot multiple sets of coordinates on the same set of axes,. For plotting the mesh plot it has mesh () which will generate the 3d surface. Specify a dashed line style for the second line and a dotted line style for. How to plot 3D grid (cube) in Matlab. For plotting the mesh plot it has mesh () which will generate the 3d surface. a = arduino(); %Make sure you have 'Servo' and 'I2C' Libraries included. Specify a dashed line style for the second line and a dotted line style for the third line. Plot the points and curves in a 3D plot. 5); figure plot (x,y1,x,y2, '--' ,x,y3, ':'). plot a cube with different images projected on each ">How can I plot a cube with different images projected on each. txt'); Az = D (:,1); El = D (:,2); Rd = D (:,3);. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's see how to. In Matplotlib, 3D plots can be enabled by importing the mplot3d toolkit that comes with Matplotlib installation. Surface (z=Z, x=x, y=y, colorscale="Reds", opacity=0. Create 3-D Scatter Plot Create a 3-D scatter plot. Matlab plots data, not functions. MATLAB's 3D plotting capabilities include surface plots, mesh plots, and even animated plots that bring your data to life. According to Matlab documentation (2nd line for fill3) "fill3 (X,Y,Z,C) fills three-dimensional polygons. Getting Started With MATLAB Plotting Installing And Setting Up MATLAB Online Before you can start painting your data masterpiece, you'll need to set up your digital canvas. The function must accept two matrix input arguments and return a. s1 = servo(a, 'D3');%Creates a servo object on pin D3. I want to make a 3D PCA plot with the first three principal components and to have a 95% confidence ellipsoid for each class (label). Learn more about 3d plots, legend, data MATLAB Hi, I have a question, I'm wondering how I'd be able to create a legend based on a neighboring column right now I have this code And the pulled table doesn't necessarily extract the element nam. figure scatter3 (x,y,z, '*' ) view (-30,10) Set Marker Properties Initialize the random-number generator to make the. This example shows how to create a variety of 3-D plots in MATLAB®. For smoother color transitions, use a colormap with linear intensity variation such as pink. If it's an n by 3 array, you will get a plot of a curve in 3 dimensions. A better solution would be to vectorise; to put all your points (vertices/faces/whatever) together in a single matrix first and then call the @patch function only once (no 'for' loop). Create 3-D grid coordinates from x -, y -, and z -coordinates defined in the interval [0,6], and evaluate the expression. 3d scatter plots in MATLAB. Accepted Answer: Matt J I have a hyperspectral data cube, DATCUBE, where size (DATCUBE)= [512,512,128]. It is the z matrix that you plot either as a 2D image (values of z are represented by colors) or a 3D plot (values of z are represented as heights along the z-axis). The original column headers are saved in the VariableDescriptions property. How to make 3D Scatter Plots plots in MATLAB ® with Plotly. Yes, you can create a plane that intersects the 3D curves and then display the intersection points on the plane. Create a 3-D scatter plot and set the marker type. This video demonstrates how to plot a multivariate equation in MATLAB. Define vectors x and y as cosine and sine values with random noise. In MATLAB, the plot3 () function is used to draw the 3D plot graph. This is an example of how to create a 3D plot in MATLAB®. To create mesh we have to give the values x and y for z, (z= f (x, y)). The mesh function creates a wireframe mesh. You can also use the surf command to create a 3D surface plot. Follow along with the videos and you'll make 3D contours and surface plots easily!The. meshgrid (x,y) a = 3 b = 2 Z = a*X**2 + b*Y**2 fig = go. update_layout ( title='My title', autosize=False, width=500, height=500, margin=dict (l=65, r=50, …. Use view to change the angle of the axes in the figure. You can additionally use surf for filled surface patches and set the 'EdgeColor' property to 'None' (so the patch edges are non-visible). 5K views 1 year ago This video demonstrates how to plot a multivariate equation in MATLAB. Surface Plot (with Shading) The surfl function creates a surface plot with colormap-based lighting. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's see how to. With 3 arguments, patch( x, y, c ) creates a 2D patch with the given color c. With MATLAB's animation capabilities, you can create dynamic plots. You can use plot3 to help you facilitate this kind of plotting. Then plot them as a surface. Let's say I want to place 4 graphs on a single plot in that fashion. 3D MATLAB Plot Introduction In general, the three-dimensional plots consist of the three vectors (x,y,z) in the same graph. According to Matlab documentation (2nd line for fill3) "fill3 (X,Y,Z,C) fills three-dimensional polygons. With plot3, what you need to do is make the y values for each of your plots z values instead, and if you want to separate the graphs, you need to vary the y values in this 3D plot. To create mesh we have to give the values x and y for z, (z= f (x, y)). PLOT3 (Line Plots) Plot3 helps in creating 3D lines or Point Plots. plot3 (X,Y,Z) plots coordinates in 3-D space. 3d scatter plots in MATLAB">3d scatter plots in MATLAB. How to make 3D Line Plots in MATLAB ® with Plotly. com/_ylt=AwrFYhSp7FVk5QMdZQBXNyoA;_ylu=Y29sbwNiZjEEcG9zAzUEdnRpZAMEc2VjA3Ny/RV=2/RE=1683381545/RO=10/RU=https%3a%2f%2fwww. This tutorial illustrates how to generate 3D plots in Matlab. So, you need to generate data that represents your function. Here's an example to help you get started: Theme Copy % Define your 3D points and curves (dummy example) curve1 = [1 2 3; 2 3 4; 3 4 5]; curve2 = [5 4 3; 4 3 2; 3 2 1]; % Define the plane equation: Ax + By + Cz + D = 0 A = 1; B = 1; C = 1; D = -6;. Matlab % code for 3D plot % plot the points for x and y [x,y]=meshgrid (-5 : 0. Specify a function of the form z = f (x,y). I'm using the plot3() function to plot the point cloud. To plot a 3D surface from a data file in MATLAB, you will need to have the data file open in MATLAB. In MATLAB, the plot3 () function is used to. import plotly. To create your first basic plot, follow these simple steps: Load your data into MATLAB. 3D Plotting matlab We show how to use plotting commands by examples. 3D Plots in Matlab For Beginners. I would like to create a 3d plot that looks like a cube where each face shows the sum or mean of the cube in the relevant directions. Once you have the data file available, you can use the plot3 command to plot the data. z = peaks (25); figure mesh (z). The surfl function creates a surface plot with colormap-based lighting. Below we have discussed the types of 3D plots in MATLAB used in computing. You can additionally use surf for filled surface patches and set the 'EdgeColor' property to 'None' (so the patch edges are non-visible). Follow along with the videos and you'll make 3D contours and surface plots easily! The. ) Write a few lines of code to generate the plot. To plot a 3D surface from a data file in MATLAB, you will need to have the data file open in MATLAB. you are right, I simplified to z=F (x,y) and when plotting all points ended up on a plane instead of 3D. Follow along with the videos and you'll make 3D contours and surface plots easily!The. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's see how to. Getting Started With MATLAB Plotting Installing And Setting Up MATLAB Online Before you can start painting your data masterpiece, you'll need to set up your digital canvas. With plot3, what you need to do is make the y values for each of your plots z values instead, and if you. ^2)/2); surf (x,y,z);shading interp. Luckily, MATLAB Online makes this process as easy as pie. Use sphere to define vectors x, y, and z. Create Surface Plot Create three matrices of the same size. How to make 3D Scatter Plots plots in MATLAB ® with Plotly. 75*Z(:); Z(:)]; scatter3(x,y,z) fig2plotly(gcf);. Plot 3-D Helix Define t as a vector of values between 0 and 10π. Product Updates Creating 3-D Plots This example shows how to create a variety of 3-D plots in MATLAB®. The three coordinate vectors have different lengths, forming a rectangular box of grid points. Plot the points and curves in a 3D plot. Mesh Plot The mesh function creates a wireframe mesh. How can I plot 3D polar plot in MATLAB. Create 3-D grid coordinates from x -, y -, and z -coordinates defined in the interval [0,6], and evaluate the expression. R= [21,30; 49,52; 82,83]; % set ranges desired in array by row, start-stop rnge=cell2mat (arrayfun (@ (i1,i2)i1:i2,R (:,1),R (:,2),'uni',0). AtomicNumber,rnge); % look 'em up in your table. R= [21,30; 49,52; 82,83]; % set ranges desired in array by row, start-stop rnge=cell2mat (arrayfun (@ (i1,i2)i1:i2,R (:,1),R (:,2),'uni',0). 01 : 1]'; x = t; y = t; z = 2 * t. com%2ftutorials%2fmatlab-tutorial%2fcreating-matlab-3d-plots-graphics/RK=2/RS=V6Wjwm4J4NyCa8sbbe. It is possible to use the sph2cart function to plot your data in 3D, however in Cartesian coordinates, so losing the angle data in the plot. How can I make a 3d plot with two equations and one variable?. '); % convert to a list of wanted values ix=ismember (tT. R= [21,30; 49,52; 82,83]; % set ranges desired in array by row, start-stop rnge=cell2mat (arrayfun (@ (i1,i2)i1:i2,R (:,1),R (:,2),'uni',0). translate such ellipsoids to the central point of each cluster. Product Updates Creating 3-D Plots This example shows how to create a variety of 3-D plots in MATLAB®. This video demonstrates how to plot a multivariate equation in MATLAB. For a "3-d plot", you would need an n x m x l array. AtomicNumber,rnge); % look 'em up in your table. Picture this: your data is dancing across the screen, captivating your audience with its elegant choreography. z = peaks (25); figure mesh (z) Surface Plot The surf function is used to create a 3-D surface plot. Specify a function of the form z = f(x,y). x = 0:pi/100:2*pi; y1 = sin (x); y2 = sin (x-0. The patch example given above doesn't work to show a 3D plane. If it's an n by 3 array, you will get a plot of a curve in 3 dimensions. This tutorial illustrates how to generate 3D plots in Matlab. ^2; Determine the size of the grid. 3d plots legend data Products MATLAB Release R2023a Community Treasure Hunt Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! An Error Occurred Unable to complete the action because of changes made to the page. The plot3 command will create a 3D plot of the data. Plot the points and curves in a 3D plot. Animating Plots For Dynamic. Plot three sine curves with a small phase shift between each line. Matlab % code for 3D plot % plot the points for x and y [x,y]=meshgrid (-5 : 0. , a 3D Gaussian bell curve can be plotted as x=linspace (-3,3,1000);y=x'; %' [X,Y]=meshgrid (x,y); z=exp (- (X. Create a 3-D scatter plot and set the marker type. The matlab script is running and the data variable is collecting the [x, y, z] point cloud spherical coordinates from the Lidar but the 3D plot is not working. Use the scatter3 () Function to Create a 3D Scatter Plot in MATLAB If we want to create a 3D scatter plot, we can use the scatter3 () function. Below we have discussed the types of 3D plots in MATLAB used in computing. Example: parametric curve Helix Example: parabolic surface Example: 3-dimensional rotating surface Example: Toroid Example 0. X, Y, and Z triplets specify the polygon vertices". MATLAB's 3D plotting capabilities include surface plots, mesh plots, and even animated plots that bring your data to life. There may be File Exchange contributions for 3D polar plots. By default, the color of the mesh is proportional to the surface height. In Matplotlib, 3D plots can be enabled by importing the mplot3d toolkit that comes with Matplotlib installation. Effortless MATLAB Plotting. '); % convert to a list of wanted values ix=ismember (tT. Then plot st, ct, and t. Make 3d Python plot as beautiful as Matlab ">matplotlib. To plot a set of coordinates connected by line segments, specify X, Y, and Z as vectors of the same length. 3d plots legend data Products MATLAB Release R2023a Community Treasure Hunt Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! An Error Occurred Unable to complete the action because of changes made to the page. How do show points on plane going through 3d plot. The function must accept two matrix input arguments and return a matrix output argument of the same size. This tutorial illustrates how to generate 3D plots in Matlab. Product Updates Creating 3-D Plots This example shows how to create a variety of 3-D plots in MATLAB®. How to make 3D PCA plot with 95% ellipsoids in MATLAB">How to make 3D PCA plot with 95% ellipsoids in MATLAB. Voilà! You've just created your first MATLAB plot. plot3 (X,Y,Z) plots coordinates in 3-D space. Animating Plots For Dynamic Presentations. 3d surface plots in MATLAB. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's see how to. The plot3 command will create a 3D plot of the data. To create mesh we have to give the values x and y for z, (z= f (x, y)). Product Updates Creating 3-D Plots This example shows how to create a variety of 3-D plots in MATLAB®. For more examples, go to MATLAB. MATLAB Plotting">Effortless MATLAB Plotting. If it's an n by 3 array, you will get a plot of a curve in 3 dimensions. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's. 3-D function to plot, specified as a function handle to a named or anonymous function. ^2 ; disp (z); % to plot the 3D surface use contour3 () % contour3 (z ,levels), levels is used % to display the height for the contour % lines contour3 (z,25); % to label x ,y ,z axis and title. Use array operators instead of matrix operators for the best performance. Plot the intersection points on the plane. 3D Surface Plot ">Plotting Multivariate Equations In MATLAB. This function is the same as the scatter () function, though it plots the given data in a 3D plane. How can I plot a cube with different images projected on each. Luckily, MATLAB Online makes this process as easy as pie. The surfl function creates a surface plot with colormap-based lighting. 5:10,1:20); Z = sin (X) + cos (Y); surf (X,Y,Z) Specify. 3D Surface Plot Using MATLAB. Then plot them as a surface. The contour function is used to create a plot with contour lines of constant value. 5:10,1:20); Z = sin (X) + cos (Y); surf (X,Y,Z) Specify Colormap Colors for Surface Plot Specify the colors for a surface plot by including a fourth matrix input, C. How can I generate a plane surface in MATLAB?. Syntax: mesh (Z) Example: Matlab % give the input of x and y. Use the scatter3 () Function to Create a 3D Scatter Plot in MATLAB If we want to create a 3D scatter plot, we can use the scatter3 () function. How to make 3D Line Plots in MATLAB ® with Plotly. how to create legend from neighboring column in 3d plot">how to create legend from neighboring column in 3d plot. A 2D polar plot with the values in scaled colour is not difficult to code using the polarscatter function (in R2016b and later): D = load ('data. Set 'VariableNamingRule' to 'preserve' to use the original column headers as table variable names. x = 0:2:6; y = 0:1:6; z = 0:3:6; [X,Y,Z] = meshgrid (x,y,z); F = X. Here I generate a vector containing 100 values of t from 0 to 1 (you could use linspace () for this if you prefer), then use it to generate the x, y, and z values: t = [0 : 0. I will provide a general outline of the steps you can take to achieve this in MATLAB. A 2D polar plot with the values in scaled colour is not difficult to code using the polarscatter function (in R2016b and later):. How to make 3D Surface Plots plots in MATLAB ® with Plotly. Matlab Tutorial - Animated Plot in 3D - YouTube 0:00 / 5:19 Matlab Tutorial - Animated Plot in 3D CodingOwl 856 subscribers Subscribe 57K views 7 years ago In this video, let's see how to. 5:10,1:20); Z = sin(X) + cos(Y); surf(X,Y,Z); fig2plotly(gcf, 'TreatAs', 'surf');. Use the default line style for the first line. Mesh Plot The mesh function creates a wireframe mesh. How to plot XYZ data in 3D – Surface, WireFrame and MESH MESH Graph (Surface/Wireframe) Method 1: DIY – Placing Values Before you can graph a surface graph in Excel you need to know how to format your data. To plot a set of coordinates connected by line segments, specify X, Y, and Z as vectors of the same length. plot3 (X,Y,Z) plots coordinates in 3-D space. Here is my code: % Input data InputData = [7. Reload the page to see its updated state. You can use plot3 to help you facilitate this kind of plotting. It has solid edge color but no face color. /R; % surface in 3D figure; surf (Z,'EdgeColor','None'); 2D map: You can get a 2D map by switching the view property of the figure. To plot a 3D surface from a data file in MATLAB, you will need to have the data file open in MATLAB. If you surf with all x y z you are going to place the points back. You can also use a specified line style, marker, and color for drawing 3D plots. Choose your plot type (line, scatter, bar, etc. plot 3D grid (cube) in Matlab. The scatter3 function is used in MATLAB to plot 3D scatter plots These plots are used to draw 3 variables in one plot We can control the size, shape and other properties of the plotted points using the arguments of the scatter3 function Recommended Articles This is a guide to Matlab 3d scatter plot. This function is the same as the scatter () function, though it plots the given data in a 3D plane. This would require changing the code somehow to update all the XYZ data. To create mesh we have to give the values x and y for z, (z= f (x, y)). plot3 (X,Y,Z) plots coordinates in 3-D space. 13K subscribers 3D Plots in Matlab Learn how to plot graphs in Matlab In this tutorial we will create a 3D plot in Matlab surf (Z) creates a three-dimensional shaded surface from. Do you want a curve, with any one tuple (x,y,z) representing a point on the curve? – Alok Singhal Dec 31, 2009 at. Create Surface Plot Create three matrices of the same size. We investigate the concept of how to generate a discrete representation of a continuous, 3D function before looking at tools. Simply follow the step-by-step instructions to create an account, and you'll be up and running in no time. t = 0:pi/50:10*pi; st = sin(t); ct = cos(t); plot3(st,ct,t) fig2plotly(gcf);. Learn more about 3d plots, legend, data MATLAB Hi, I have a question, I'm wondering how I'd be able to create a legend based on a neighboring column right now I have this code. Plot the intersection points on the plane. I did made a mistake though in the way I input the points to fill3 (wrong dimension used), and this is now corrected. We investigate the concept of how to generate a discrete representation of a continuous, 3D function before looking at tools in Matlab. surfl (z) colormap (pink) % change color map shading interp % interpolate colors across lines and faces. 2wL2snTc-" referrerpolicy="origin" target="_blank">See full list on simplilearn. Use the scatter3 () Function to Create a 3D Scatter Plot in MATLAB If we want to create a 3D scatter plot, we can use the scatter3 () function. Once you have the data file available, you can use the plot3. Use the scatter3 () Function to Create a 3D Scatter Plot in MATLAB If we want to create a 3D scatter plot, we can use the scatter3 () function. make a "color map" plot in matlab?. figure [X,Y,Z] = sphere(16); x = [0. 3D Plots in Matlab Learn how to plot graphs in MatlabIn this tutorial we will create a 3D plot in Matlabsurf(Z) creates a three-dimensional shaded surface fr. Create Surface Plot Create three matrices of the same size. figure scatter3 (x,y,z, '*' ) view (-30,10) Set Marker Properties Initialize the random-number generator to make the output of rand repeatable. We investigate the concept of how to generate a discrete representation of a continuous, 3D fu. z = peaks (25); figure mesh (z) Surface Plot The surf function is used to create a 3-D surface plot. Define st and ct as vectors of sine and cosine values. 1 :5); % give any equation for z variable z = x. It is true that you need XYZ values, but the raw format of 3 columns is not what Excel needs to plot a surface graph. 3D Point Cloud of Garmin Lidar Lite V3 not showing in Matlab">3D Point Cloud of Garmin Lidar Lite V3 not showing in Matlab. To plot a set of coordinates connected by line segments, specify X, Y, and Z as vectors of the same length. Warning: Column headers from the file were modified to make them valid MATLAB identifiers before creating variable names for the table. A better solution would be to vectorise; to put all your points (vertices/faces/whatever) together in a single matrix first and then call the @patch function only once (no 'for' loop).