Smoothed 2D histogram contour

I want to plot smoothed 2D histogram contour with the help of X & Y data, I have attached excel file of same. I was only able to plot 2D histogram. how can I add contour ?

x = importdata('x.txt');

>> y = importdata('y.txt');

>> data=[x,y];

>> hist3(data,cdatamode,'auto')

I need this type of smoothed plot

[Ive J]

data = readtable('https://se.mathworks.com/matlabcentral/answers/uploaded_files/870630/xy.xlsx');
tiledlayout(1, 2)
nexttile
histogram2(data.X, data.Y, 'DisplayStyle', 'tile')
nexttile
histogram2(data.X, data.Y, 'BinMethod', 'fd')

[Rohit Gaikwad]

How can I create smoothed plot like this

[Ive J]

data = readtable('https://se.mathworks.com/matlabcentral/answers/uploaded_files/870630/xy.xlsx');
histogram2(data.X, data.Y, 'DisplayStyle', 'tile', 'NumBins', 250)
shading interp
grid off

Another example:

h = histogram2(randn(1e6, 1), randn(1e6, 1), 'DisplayStyle', 'tile', 'NumBins', 200);
shading interp

Answer 1

[Simon Chan]

Try this:

data = readmatrix('xy.xlsx');
nbins=[200 200];                                        % You may adjust number of bins for both direction
[N,Xedges,Yedges] = histcounts2(data(:,1),data(:,2),nbins);
[X,Y] = meshgrid(Xedges(1:end-1),Yedges(1:end-1));
N = N';
scatter(X(:),Y(:),[],N(:),'filled');                    % Use scatter plot
colorbar;                                               % Colorbar with custom colormap