Unlike 2D figure, 3 variables are involved in a 3D figure. Below is an example of 3D mesh graph. For certain value of X and Y, we plot the value of Z.
Example :
Z = (X / (c*Y))
3D figure can be bar, mess, surf etc...
Example :
Z = (X / (c*Y))
3D figure can be bar, mess, surf etc...
Let's begin drawing the graph for the equation
Z = (X / (c*Y))
Step-1: Prepare the data
X = [0.1000 0.1889 0.2778 0.3667 0.4556 0.5444 0.6333 0.7222 0.8111 0.9000]
Y = [-0.1000 -0.1889 -0.2778 -0.3667 -0.4556 -0.5444 -0.6333 -0.7222 -0.8111 -0.9000]
c = 0.05
Here I have used the following Matlab code to generate the data for X and Y.
X = linspace(0.1,0.9,10)
Y = linspace(-0.1,-0.9,10)
for X, 0.1 is the initial value, 0.9 is the final value, and 10 is the number of values to be generated between initial and final value. Similarly for Y also.
Now In order to generate the data for 3D surf convert X and Y data to a meshgrid.
Step-2:
[mx, my] = meshgrid(X, Y);
Step-3: Generate data for Z-axis
Z = mx ./ (c.*my);
Step-4: Get ready to plot the data onto a 3D figure.
Enter the following code
figure1 = figure(); % Create axes axes1 = axes('Parent',figure1); hold(axes1,'on'); % Create xlabel xlabel('X-axis Label'); % Create ylabel ylabel('Y-axis Label'); % Create zlabel zlabel('Z-axis Label'); view(axes1,[152.1 22]); % Create surf surf(ax,ay,Z,'Parent',axes1); grid(axes1,'on'); % Set the remaining axes properties set(axes1,'FontName','Times New Roman','FontSize',14,'FontWeight','bold',... 'XTick',[0.1 0.3 0.5 0.7 0.9],'XTickLabel',... {'0.1','0.3','0.5','0.7','0.9'});
Final Step:
The entire Matlab file will look like this
X=linspace(0.1,0.9,10); Y=linspace(-0.1,-0.9,10); c=0.05; [ax, ay] = meshgrid(X,Y); Z = ax ./(c.*ay); figure1 = figure(); % Create axes axes1 = axes('Parent',figure1); hold(axes1,'on'); % Create xlabel xlabel('X-axis Label'); % Create ylabel ylabel('Y-axis Label'); % Create zlabel zlabel('Z-axis Label'); view(axes1,[152.1 22]); % Create surf surf(ax,ay,Z,'Parent',axes1); grid(axes1,'on'); % Set the remaining axes properties set(axes1,'FontName','Times New Roman','FontSize',14,'FontWeight','bold',... 'XTick',[0.1 0.3 0.5 0.7 0.9],'XTickLabel',... {'0.1','0.3','0.5','0.7','0.9'});
Bonus tips: Customizing the axis label with text() and annotation().
Disable xlabel(), ylabel(), and zlabel() if you are going for text() or annotation() command.
text() example:
% After running this .m file edit the position of each text box ty=text(0.5,0.5,'Y-axis label','Rotation',-28,'FontSize',20,... 'FontWeight','bold','FontName','Times New Roman');
annotation() example:
annotation(figure1,'textbox',... [0.528242677824266 0.789163935354498 0.0753138055985942 0.0475409826782883],... 'String',{'? = 0.5'},... 'FontWeight','bold',... 'FontSize',12,... 'FontName','Times New Roman',... 'EdgeColor',[0.24705882370472 0.24705882370472 0.24705882370472],... 'BackgroundColor',[1 1 1]);
Thats all for now.
Please comment if more customization function you need.
Thank you
