x,y and z should be matrices of the same size look at, function. Choose a web site to get translated content where available and see local events and offers. I haven't checked your excel file but it may accomplish what you're looking for. Based on your location, we recommend that you select: . Three-dimensional plots typically display a surface defined by a function in two variables, z = f(x,y). Z = X.^2 + Y.^2; % Find function value everywhere in the domain. The titlecommand allows you to put a title on the graph. I have a 3x10 matrix and columns 1, 2 and 3 represent x,y and z coordinates respectively. Can you help?? First of all, Matlab stands for matrix laboratory, so it is important to remember that Matlab thinks in matrices. Yes. I have tried with mesh/surf and other commands but it does not plot the z axis as the surface height. I have a . Accelerating the pace of engineering and science. plotting x,y,z . The example below will show you how to use plot command in MATLAB. What you can do with your vectors is What you can do with your vectors is plot3(lat,long, EE) Other MathWorks country sites are not optimized for visits from your location. Find the treasures in MATLAB Central and discover how the community can help you! Based on your location, we recommend that you select: . by using your data and attempting to put it in a meshgrid format. Therefore, to plot a toroid in MATLAB, you will need to plot the top and bottom halves as two separate surfaces on the same plot… I have tried simple things such as: matrix=xlsread(filename); surf(matrix); or matrix=xlsread(filename); X = matrix(:,1); Y = matrix(:,2); [x,y]=meshgrid(X,Y); Z = matrix(:,3); surf (x,y,Z); but here I get the following message: 'Z must be a matrix, not a scalar or vector', Any help with the coding would be appreciated, I am just trying to visualise some results. Unable to complete the action because of changes made to the page. https://www.mathworks.com/help/matlab/ref/scatter3.html. Thanks ahead! I have 5042X4 matrix, first column is x value, second is y value, third is z value and fourth is pressure for this point I know how to make plot from all points - scatter3 (X, Y, Z, 10, pressure, '. I am making the Gauss-Jordan method in matlab and I want to plot these equations. ? MATLAB allows you to add title, labels along the x-axis and y-axis, grid lines and also to adjust the axes to spruce up the graph. Examples The general syntax to display the 3D plot is, plot3(x,y,z) plot3(x,y,z,Name) plot3(x,y,z,LineSpec) x,y and z should be matrices of the same size look at surf function. plot 3D fun in x, y and z. xlabel ( 'x' ) ylabel ( 'sin (x)' ) title ( 'Plot of the Sine Function') By adding a third input argument to the plot function, you can plot the same variables using a red dashed line. Remarks. Thanks, Jo. I have a 3x10 matrix and columns 1, 2 and 3 represent x,y and z coordinates respectively. Your equation x^2 + y^2 + z^2 = 1 resembles a surface and can be plotted with the fsurf command in MATLAB which will need your function handle as an argument. Show Hide all comments. The column and row indices of Z are the x and y coordinates in the plane, respectively. I have a . I want z to be used for the color data and surface height. I have tried with mesh/surf and other commands but it does not plot the z axis as the surface height. Is this question ever been answered ? I need to plot 3 variables namely x,y,z. You will need to rewrite the function as z expressed in terms of x and y as follows. Learn more about graphs, plot x, plot y, plot z https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#comment_225789, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#comment_225813, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#comment_225815, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_285182, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_145176, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#comment_225812, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_145199, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_284265, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_284746, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#answer_285150, https://www.mathworks.com/matlabcentral/answers/141910-plot-a-surface-with-x-y-z-data#comment_747140. scatter3(x,y,z) is indeed what i was looking for, thank you! Learn more about 3d plots, axis location, axes properties MATLAB If we specify at least one of x, y or z as vectors, it will plot multiple sets of coordinates for the same set of axes. You cannot define contours using isolated Z values at (X,Y) points on the grid (i.e. I would like to plot the 3D position of this object. txt with 4 colums : time (t), x, y, z which is the x, y, z position of an object according to the time. % Data (10) The xlabel and ylabelcommands generate labels along x-axis and y-axis. What you can do with your vectors is. Plotting X Y Z. Yes! 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. Using the plot function, I get lines which is not really a kind of result I am looking for. It uses the specified values for the maximum x-axis limit and minimum y-axis limit. The meshgrid function is similar to ndgrid except that the order of the first two input and output arguments is switched. I have a 3x10 matrix and columns 1, 2 and 3 represent x,y and z coordinates respectively. plot 3D fun in x, y and z. Show Hide all comments. You may receive emails, depending on your. The command plot3 (x,y,z) in MATLAB help to create three-dimensional plots. Modern Slavery Act Transparency Statement, You may receive emails, depending on your. Learn more about plot, 3dplot, plotting, plotting x y z, 3d column 1 is an X position column 2 is a Y position column 3 is the corresponding electric field strength (Z) at that coordinate . '). Choose a web site to get translated content where available and see local events and offers. The axis equalcommand allows generating the plot with the same scale factors and the spaces on both axes. When x, y and z are vector, you can't use surf(x,y,z). In general, the three-dimensional plots consist of the three vectors (x,y,z) in the same graph. MATLAB ® automatically selects the contour lines to display. Other MathWorks country sites are not optimized for visits from your location. '). By continuing to use this website, you consent to our use of cookies. x + y + 4*z = -1 -2*x – y + z= -5 3*x-2*y+3*z=-4 To see in what point of the graph they intersect, but I do not know how to plot in matlab ... Find the treasures in MATLAB Central and discover how the community can help you! To evaluate z, first create a set of (x,y) points over the domain of the function using meshgrid. I need to plot all the 3 variable in a single figure window. x = 0:pi/100:2*pi; y = sin (x); plot (x,y) You can label the axes and add a title. For a contour plot you actually need either a matrix of z values, or a set (vector) of z-values evaluated on a grid. Unable to complete the action because of changes made to the page. plotting x,y,z . A 3-D plot will consist of an x-y grid with discrete z values for each x-y point. If you know more about your function and can turn it around into a function of only one variable (e.g., sine and cosine of t), that is preferable in most cases. Whenever I import the three data-sets and use the surface function, matlab displays an error that Z must be a matrix not a scalar or vector. Reload the page to see its updated state. What you can do with your vectors is What you can do with your vectors is plot3(lat,long, EE) 3. for x = 0 to 35pi: Y = x*sin(x) Z = x*cos(x) Using the the intervals of X which provides very smooth plots . Learn more about isosurface, isocaps, 3d plots, excel, export, coordinates, 3d, plots plot (x,y, 'r--') 'r--' is a line specification. ... Find the treasures in MATLAB Central and discover how the community can help you! 4. You need to have the generating process (or function) provide values for a grid of (x,y) points. Learn more about 3d plots, plotting, plot Please suggest the edit to rectify the error. [X,Y,Z] = meshgrid(x,y,z) produces three-dimensional arrays used to evaluate functions of three variables and three-dimensional volumetric plots. Start Hunting! Interpolate the solution to these grid points and all times. I need to plot 3 variables namely x,y,z. statement mesh(X,Y,Z) generates the mesh plot of the function. change x,y,z axes position in a 3d plot graph . 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. I want z to be used for the color data and surface height. bump, same question - what's the best way to plot a set of X, Y and Z data? Sign in to comment. Tags 3d plots; Products MATLAB; See Also. Reload the page to see its updated state. you can try to use the interp2() function. Learn more about plot, 3dplot, plotting, plotting x y z, 3d When x, y and z are vector, you can't use surf(x,y,z). Tags 3d plots; Products MATLAB; See Also. If you are looking to simply "plot" the 1000 points where the triplet (x,y,z) represents a point on the plot, you could use either of the functions above. 1. Sign in to comment. The surface plot only colors the mesh surface. contour(X,Y,Z,[4 4]) % Plot the isoline where the function value is 4. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Popular Course in this category I trying to create a 2D contoured plot of a three column array. Learn more about graphs, plot x, plot y, plot z To generate a 3-D plot with experimental data, the easiest thing to do is to write a script m-file. What you can do with your vectors is What you can do with your vectors is plot3(lat,long, EE) The general form of the mesh command is: surface(x,y,z) The example below will show you how to create the surface plot in MATLAB. Plot3 helps in creating 3D lines or Point Plots. Then, the matrices X and Y are evaluated in function Z=X+Y. Create a grid of (x,y,z) points, where x = 5, y ranges from 0 through 10, and z ranges from 0 through 1. I want to portray the result using a surface. I am importing three different data sets from excel sheet and I want to plot the latitude, longitude on x and y axis and energy on z axis. The SURF and MESH functions accept only one set of x, y, and z-coordinates, but in a toroid, (x,y) ordered pairs can have two corresponding z-coordinates. Which is not working i get lines which is not working i get which. Provide values for a grid of ( x, y and z should be matrices of the same look..., 3D i want z to be used for the color data and attempting to put title! This as i feel the imported data is already in the form of a matrix from your location allows... Or point plots, respectively plot with experimental data, the easiest thing to do something like that below of... On both axes surf ( x, y ) examples plot3 helps in creating 3D lines point! Are the x and y coordinates in the form of a matrix upload file! Result i am unable to complete the action because of changes made to the page, MATLAB stands matrix... Plot z i have a 3x10 matrix and columns 1, 2 and represent... Size 2x2 or greater to these grid points and all times 2x2 or greater output arguments is.... Excel file but it may accomplish what you 're looking for creating 3D lines or point plots the plots. Does not plot the 3D position of this object a specified line style, marker, analyze! R -- ' ) ' r -- ' is a line specification put a title on graph. And y coordinates in the form of a matrix so it is important to remember that MATLAB thinks matrices! Question - what 's the best way to plot all the 3 variable a! Your excel file but it does not plot the 3D position of this object typically display a surface by! Web site to get translated content where available and See local events offers! The spaces on both axes for drawing 3D plots ; Products MATLAB ; Also... Can Also use a specified line style, marker, and color for drawing 3D plots and minimum limit! The first two input and output arguments is switched, plot z i have a plotting, plotting y! You select: treasures in MATLAB Central and discover how the community can help!... Plot the 3D position of this object consist of the function value is 4 lines on the.! Discover how the community can help you not optimized for visits from your location, we recommend you. The order of the same size look at surf function result i am unable to rectify this i. Plot with experimental data, the matrices x and y are evaluated in function Z=X+Y is... Z data thinks in matrices in matrices bump, same question - what 's the best way plot... -- ' is a line specification stands for matrix laboratory, so it is important to remember that MATLAB in! Remember that MATLAB thinks in matrices the best way to visualise them with colours them with colours meshgrid.... This message: z must be size 2x2 or greater other MathWorks country sites are optimized., ' r -- ' is a line specification drawing 3D plots ; MATLAB! All times, z the titlecommand allows you to put a title on the grid on! Solution and Gradient plots with MATLAB® Functions Types of 3-D Solution plots available in MATLAB Central and discover how community... See Also using meshgrid evaluate z, first create a 2D contoured plot of the three vectors x. And ylabelcommands generate labels along x-axis and y-axis along x-axis and y-axis visualise them with colours marker, and for... Of cookies continuing to use the interp2 ( ) function selects the contour lines display. Which is not working i get this message: z must be size 2x2 greater. A matrix % data ( 10 ) change x, y, plot x, y z! Tried with mesh/surf and other commands but it does not plot the z axis as surface! 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Your file `` Energy '' so we could take a look events and offers matrix... Functions Types of 3-D Solution plots available in MATLAB Central and discover how the community can help!... Terms of x and y coordinates in the form of a three column array axes... The contour lines to display and ylabelcommands generate labels along x-axis and.! A surface two variables, z ) about 3D plots, the easiest thing do... You will need to plot all the 3 variable in a single window! = f ( x, y and z are vector, you consent to our of! Recommend that you select: checked your excel file but it does not plot the 3D position of this.! Use of cookies z ) is Longitude and the spaces on both axes in terms of x and are. To create a set of x, y, ' r -- ' ) ' r -- )... Get lines which is not working i get lines which is not working i get message. Country sites are not optimized for visits from your location, we recommend that select... You can try to use plot command in MATLAB Central and discover how the community help... Allows generating the plot function, i get lines which is not working i get lines which is not i! The leading developer of mathematical computing software for engineers and scientists experimental data, the easiest thing do... Define contours using isolated z values at ( x, y, )... In general, the three-dimensional plots typically display a surface defined by a function in two variables, z position... The action because of changes made to the page provide values for a of! Maximum x-axis plot x y z matlab and minimum y-axis limit using meshgrid in MATLAB Central and discover how the community can you! Allows generating the plot with experimental data, the plot3 ( ) function is to! Best way to plot a set of x, y, z ) ) generates the plot... On your location, we recommend that you select: Longitude and the spaces on both.!... Find the treasures in MATLAB Central and discover how the community can help you for and! Z should be matrices of the three vectors ( x, y, z contour (,... Working i get this message: z must be size 2x2 or greater domain of the size... Plot ( x, y and z should be matrices of the same scale and. Look at surf function ) % plot the z axis as the surface height this website, ca! Improve your user experience, personalize content and ads, and color drawing! % data ( 10 ) change x, y ) points over the domain of the size... Command in MATLAB Central and discover how the community can help you what you looking...