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Contour Plot gives error

조회 수: 30(최근 30일)
Muhammad Qaisar Fahim
Muhammad Qaisar Fahim 2021년 9월 25일 2:48
댓글: Walter Roberson 2021년 9월 25일 17:10
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)

답변(2개)

KSSV
KSSV 2021년 9월 25일 3:08
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:
  댓글 수: 2
KSSV
KSSV 2021년 9월 25일 3:21
I have given a link. Read that.

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Walter Roberson
Walter Roberson 2021년 9월 25일 9:00
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);
  댓글 수: 2
Walter Roberson
Walter Roberson 2021년 9월 25일 17:10
Your original code uses contour3 which is for 3d representation. If you want 2d then use contour() or contourf instead.

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