Plotting a surface from a timetable
6 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I've developed a timetable (attached), and I want to make a surface plot from it. I want "Start Time" and "Distance [km]" to be my x and y axes, with "Flow Rate [veh/hr]" as the corresponding output on the z axis. I've tried using plot3, but I'm getting a jumbled mess instead of a smooth surface.

0 Commenti
Risposta accettata
Voss
il 16 Feb 2024
Here's one way:
load data
X = Lane1Data.("Start Time");
Y = Lane1Data.("Distance [km]");
Z = Lane1Data.("Flow Rate [veh/hr]");
I = scatteredInterpolant(hours(X-min(X)),Y,Z);
X_plot = linspace(min(X),max(X),50);
Y_plot = linspace(min(Y),max(Y),50);
[XX,YY] = meshgrid(hours(X_plot-min(X_plot)),Y_plot);
Z_plot = I(XX,YY);
surf(X_plot,Y_plot,Z_plot)
Più risposte (1)
Fangjun Jiang
il 16 Feb 2024
Modificato: Fangjun Jiang
il 16 Feb 2024
when you use plot() or plot3(), the plot connects the data points from the first to the second, till the last. Sometimes this causes bad visual effect.
What you need might be scatter3(), or use plot3(x,y,z,'.') which means just show the data points but not to connect the data points.
0 Commenti
Vedere anche
Categorie
Scopri di più su Surface and Mesh Plots in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!