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3D Histogram of 50x50 data

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AS
AS 2023-6-3
回答： Diwakar Diwakar 2023-6-4
Hello, I am looking to plot a 3D histogram (like the one in the attached snippet) in MATLAB. I have x and y axes which are 50 bins each, one is ranging from -4000 and 4000 and the other one from 0 and 8000. I just need to plot the binned values (as z) which is 50x50.
Thanks in advance.

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采纳的回答

the cyclist
the cyclist 2023-6-3
You can make this style of plot using the histogram2 function.
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the cyclist
the cyclist 2023-6-3
Ran in:
% Read the data from file
xyz = readmatrix("Histogram2_sample.xlsx");
% Get the x, y, and z values
x = xyz(2:end,1);
y = xyz(1,2:end)'; % Transpose to get a column vector
z = xyz(2:end,2:end);
% Flip x and z, because histogram algorithm requires increasing values
x = flipud(x);
z = flipud(z);
% Plot
figure
histogram2('XBinEdges',[x; x(end)+160],'YBinEdges',[y; y(end)+160],'BinCounts',z)
% Change the view to make the perspective similar to posted image
set(gca,"View",[145 30])
AS
AS 2023-6-3
awesome, thank you very much!!

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更多回答（1 个）

Diwakar Diwakar
Diwakar Diwakar 2023-6-4
Ran in:
This code may help you:
% Generate some random data
data = randn(1000, 2) .* [4000, 8000] + [0, 4000];
% Define the bin edges
x_edges = linspace(-4000, 4000, 51);
y_edges = linspace(0, 8000, 51);
% Compute the histogram
histogram2D = hist3(data, 'Edges', {x_edges, y_edges});
% Plot the 3D histogram
figure;
bar3(histogram2D);
xlabel('X');
ylabel('Y');
zlabel('Count');
title('3D Histogram');
% Customize the plot appearance
colormap jet; % Change the color map if desired
colorbar; % Add a color bar

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