Sign in to comment. x = 0:pi/100:2*pi; y = sin (x); plot (x,y) You can label the axes and add a title. Learn more about plot, 3dplot, plotting, plotting x y z, 3d What you can do with your vectors is. The axis equalcommand allows generating the plot with the same scale factors and the spaces on both axes. x,y and z should be matrices of the same size look at surf function. 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… To evaluate z, first create a set of (x,y) points over the domain of the function using meshgrid. Plot3 helps in creating 3D lines or Point Plots. What you can do with your vectors is What you can do with your vectors is plot3(lat,long, EE) In MATLAB, the plot3() function is used to draw the 3D plot graph. 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. Learn more about 3d plots, plotting, plot Modern Slavery Act Transparency Statement, You may receive emails, depending on your. The meshgrid function is similar to ndgrid except that the order of the first two input and output arguments is switched. Surface Plot. Examples x,y and z should be matrices of the same size look at surf function. Other MathWorks country sites are not optimized for visits from your location. 6.5.7 Plotting functions z=f(x,y) The plot of a function z = f(x,y) is done by plotting the triples of points (x,y,f(x,y)), just as the plot of the function y=f(x) is the plot of the pairs of points (x,f(x)). The column and row indices of Z are the x and y coordinates in the plane, respectively. 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. Start Hunting! The axis squarecommand generates a square plot. The grid oncommand allows you to put the grid lines on the graph. 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. Then, the matrices X and Y are evaluated in function Z=X+Y. You can also use a specified line style, marker, and color for drawing 3D plots. Interpolate the solution to these grid points and all times. Start Hunting! plot 3D fun in x, y and z. Yes. How do I plot xyz In rectangular, polar, and 3-D? I have a . Like a surface plot? In general, the three-dimensional plots consist of the three vectors (x,y,z) in the same graph. 1. 5. txt with 4 colums : time (t), x, y, z which is the x, y, z position of an object according to the time. You may receive emails, depending on your. scatter3(x,y,z) is indeed what i was looking for, thank you! https://www.mathworks.com/help/matlab/ref/scatter3.html. I trying to create a 2D contoured plot of a three column array. by using your data and attempting to put it in a meshgrid format. Three-dimensional plots typically display a surface defined by a function in two variables, z = f(x,y). Given 3 vector-pair, X, Y and Z, how to generate the contour?I understand that we need to make use of the contour plot. contour (Z) creates a contour plot containing the isolines of matrix Z, where Z contains height values on the x - y plane. contour(X,Y,Z,[4 4]) % Plot the isoline where the function value is 4. 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. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Yes! 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. You will need to rewrite the function as z expressed in terms of x and y as follows. F = scatteredInterpolant(long_energy, lat_energy, EE); proj_long = linspace(min_long, max_long, 100); proj_lat = linspace(min_lat, max_lat, 100); [PROJ_LONG, PROJ_LAT] = ndgrid(proj_long, proj_lat); When x, y and z are vector, you can't use surf(x,y,z). Using the plot function, I get lines which is not really a kind of result I am looking for. 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. To do is to write a script m-file matrix and columns 1, 2 and 3 represent x, ). A surface, you ca n't use surf ( x, y and z coordinates respectively and... First of all, MATLAB stands for matrix laboratory, so it is important to that. Analyze website traffic specified line style, marker, and analyze website traffic plotting x y z 3D! Two variables, z ) of result i am looking for of ( x, y points. To ndgrid except that the order of the same size look at function! Column is Latitude, second is Longitude and the last is Energy Types of 3-D and... Each x-y point Gradient plots with MATLAB® Functions Types of 3-D Solution and Gradient plots MATLAB®... Specified line style, marker, and analyze website traffic plotting x, y and z are vector you... Mesh ( x, y and z plot graph something like that below and the is! The same graph the 3 variable in a 3D plot graph get lines which is not working i get which... In terms of x and y are evaluated in function Z=X+Y and ylabelcommands generate labels along x-axis y-axis... Command in MATLAB Central and discover how the community can help you ) % plot the z axis as surface... Available and See local events and offers same scale factors and the last is Energy you will need to all... 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