Contour Plot gives error
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Muhammad Qaisar Fahim
le 25 Sep 2021
Commenté : Walter Roberson
le 25 Sep 2021
figure
x = ICE_m_f_dot_map_temp_w; % 1*140 array of values
y = ICE_m_f_dot_map_temp_T; % 1*140 array of values
[X,Y]=meshgrid(x,y);
z = ICE_m_f_dot_map_temp; % 1*140 array of values
contour3(X,Y,z)
With the above code I am trying to plot contours but I recieve this error.
Error using contour3 (line 44)
Z must be at least a 2x2 matrix.
Error in ME7384AU21_Fahim_HW2 (line 97)
contour3(X,Y,z)
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Walter Roberson
le 25 Sep 2021
N = 200; %grid refinement
x = ICE_m_f_dot_map_temp_w; % 1*140 array of values
y = ICE_m_f_dot_map_temp_T; % 1*140 array of values
z = ICE_m_f_dot_map_temp; % 1*140 array of values
minx = min(x); maxx = max(x);
miny = min(y); maxy = max(y);
[X, Y] = meshgrid(linspace(minx, maxx, N), linspace(miny, maxy, N));
F = scatteredInterpolant(x(:), y(:), z(:));
Z = F(X, Y);
contour3(X, Y, Z);
2 commentaires
Walter Roberson
le 25 Sep 2021
Your original code uses contour3 which is for 3d representation. If you want 2d then use contour() or contourf instead.
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KSSV
le 25 Sep 2021
You cannot use contour with column data. You can use scatter to plot data or if your data is gridded consider using griddata or reshaping the data as shown in the blow link:
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