The data needs to be reshaped.
Here are a few different plotting options, depending no how you went to represent the data.
D = [66;67;68;69;70;74;75;76;78;83];
Day =repelem(D,11);
timeH = (13:23)'; timeH = repmat(timeH,[10,1]);
xmin=0;
xmax=0.9;
n=110;
x = xmin+rand(1,n)*(xmax-xmin);
x = x';
DATA = [Day, timeH, x];
% Reshape the data into matrices
d = reshape(DATA(:,1), [11, 10]);
t = reshape(DATA(:,2), [11, 10]);
X = reshape(DATA(:,3), [11, 10]);
% plot as a scaled color image
imagesc(Day, timeH, X)
colorbar()
% plot as a scaled color image with interpolated visualization
imagesc(Day, timeH, X, "Interpolation", "bilinear")
colorbar()
% plot as a filled contour map
contourf(d, t, X, "LineStyle","none")
colorbar()
% plot as a 3D surface, viewed from top with interpolated shadind
surf(d, t, X, "LineStyle","none")
shading(gca, "interp")
colorbar()
view(0, 90)
axis tight
