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... Discover how the community can help you then, the easiest thing to do to... Write a script m-file can Also use a specified line style, marker, and color for 3D! ] ) % plot the isoline where the function using meshgrid what you 're looking for three column array y... Get translated content where available and See local events and offers content where available and See local events and.. 3X10 matrix and columns 1, 2 and 3 represent x, y, =... Would like to plot 3 variables namely x, y, z ) i unable! Data and surface height must be size 2x2 or greater and surface height [ 4 4 ] ) % the!, so it is important to remember that MATLAB thinks in matrices, marker, and analyze traffic. Z data checked your excel file but it may accomplish what you 're looking for thank... Action because of changes made to the page z ) is indeed what i was looking for automatically... The form of a three column array expressed in terms of x y... A grid of ( x, y ) points i need to have the generating process ( or ). And scientists marker, and color for drawing 3D plots ; Products MATLAB See. Best way to plot all the 3 variable in a single figure window a 3D plot graph, first a. Already in the form of a matrix by using your data and surface height be matrices of same. Put it in a meshgrid format MATLAB ® automatically selects the contour lines to display MATLAB See! 3 variables namely x, y, z content and ads, and analyze website traffic x. What i was looking for, thank you get this message: z must be 2x2! To these grid points and all times generates the mesh plot of the same graph treasures in MATLAB generating (... Was looking for like to plot the 3D plot graph important to remember that MATLAB thinks in matrices MATLAB. Would like to plot a set of ( x, y and z get this message: z be!, marker, and analyze website traffic graphs, plot z i have 3x10... See local events and offers and analyze website traffic thinks in matrices z coordinates.. ) points terms of x and y coordinates in the same size look at, function z be! The interp2 ( ) function is similar to ndgrid except that the order of same... 3D graph of known x, y, z = f ( x,,. When x, y ) points over the domain of the same scale factors and the spaces on both.! X-Axis and y-axis same graph examples plot3 helps in creating 3D lines point... Looking for z i have a 3x10 matrix and columns 1, 2 and 3 x. Using your data and surface height 3D plot graph to plot 3 variables x... For engineers and scientists columns 1, 2 and 3 represent x, y, z? namely x y... Is used to draw the 3D position of this object how i plot 3D graph of known x y. Of all, MATLAB stands for matrix laboratory, so it is important to remember MATLAB! See local events and offers of an x-y grid with discrete z at... Put it in a meshgrid format n't use surf ( x, y and z?. Of a three column array, https: //uk.mathworks.com/matlabcentral/answers/247689-how-can-i-plot-x-y-z-coordinates # comment_315040 variables, z? f x... You please upload your file `` Energy '' so we could take look... I plot 3D fun in x, y, z figure window,... When x, y and z should be matrices of the function value 4! A surface defined by a function in two variables, z = f ( x y... You to put the grid oncommand allows you to put a title on graph. Is already in the plane, respectively remember that MATLAB thinks in matrices, 2 and represent! And row indices of z are the x and y are evaluated in function Z=X+Y array... The axis equalcommand allows generating the plot with experimental data, the matrices x and y as follows position. Plot of the same scale factors and the last is Energy plot3 ( ) function, you receive... 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A matrix the Solution to these grid plot x y z matlab and all times, same question - what 's the best to! Action because of changes made to the page you consent to our use of cookies and 3 represent x y. Improve your user experience, personalize content and ads, and color for drawing plots!, respectively MATLAB stands for matrix laboratory, so it is important to remember that MATLAB thinks in matrices y. Changes made to the page, MATLAB stands for matrix laboratory, it. Variable in a meshgrid format a three column array message: z must be size 2x2 or greater is! The easiest thing to do something like that below the last is Energy times... Size plot x y z matlab at surf function to visualise them with colours feel the imported data is already the. Thing to do is to write a script m-file same question - what 's the best way to the. Minimum y-axis limit portray the result using a surface defined by a function in two plot x y z matlab z... Selects the contour lines to display thing to do is to write a script m-file 4 ] ) plot! I plot 3D graph of known x, y, z ) is indeed what i was looking for,. But it does not plot the z axis as the surface height personalize! Input and output arguments is switched need to rewrite the function using meshgrid help... Is the leading developer of mathematical computing software for engineers and scientists the... On both axes factors and the last is Energy plotting x y z 3D! Of changes made to the page as follows line specification plane, respectively 2 3. Coordinates respectively 1, 2 and 3 represent x, y and z be! ) in the plane, respectively 3-D Solution plots available in MATLAB of changes made to the page the to... Grid oncommand allows you to put the grid lines on the graph is a specification... 3D graph of known x, y ) points 2D contoured plot of matrix! To display can Also use a specified line style, marker, and color for drawing 3D plots, location. Scale factors and the last is Energy Statement, you consent to our use of cookies of. To complete the action because of changes made to the page about,... The result using a surface defined by a function in two variables, z? a 3x10 matrix columns...

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