Players distribution in soccer field

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Sérgio Querido 2015-4-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/204004-players-distribution-in-soccer-field

评论： Image Analyst 2015-4-19

Hello,

I have the coordinates (x,y) of a lot of soccer players and i want to know their field distribution. I want to part the field (120m x 90m) in 1m2 bens. With this, i want to now how many times, players are in each bens.

Can you help me please with the best code to run this in matlab?

SQ

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Answer 1

Image Analyst 2015-4-17

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https://ww2.mathworks.cn/matlabcentral/answers/204004-players-distribution-in-soccer-field#answer_175547

You need a 2D histogram, like http://www.mathworks.com/matlabcentral/fileexchange/12346-hist2-for-the-people?s_cid=srchtitle

If you have the Statistics and Machine Learning Toolbox you can use hist3: http://www.mathworks.com/help/stats/hist3.html?s_cid=srchtitle which looks just like what you want and need.

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Sérgio Querido 2015-4-19

How can i run ndhist.m's code with my requirements? - table size: 120m x 90m (the same size of soccer field) - Bean size: 1m2 - The (x,y) referencial point (0,0) is in the centre of de field.

Image Analyst 2015-4-19

在 MATLAB Online 中打开

If xy is your N by 2 matrix of x and y locations for the players (each player is one row), then, if you have the Statistics and Machine Learning Toolbox, do this:

hist3(xy,[120, 90])

clc;    % Clear the command window.
close all;  % Close all figures (except those of imtool.)
workspace;  % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 20;
numberOfPeopleOnField = 1000;
% Make up some X coordinates for numberOfPeopleOnField people.
x = 120 * rand(numberOfPeopleOnField, 1);
% Make up some Y coordinates for numberOfPeopleOnField people.
y = 90 * rand(numberOfPeopleOnField, 1);
xy = [x, y];
hist3(xy,[120, 90])
xlabel('X', 'FontSize', fontSize);
ylabel('Y', 'FontSize', fontSize);
zlabel('Count (# of People)', 'FontSize', fontSize);

You'll note that most 1 square meter regions have only 0 or 1 plyaer in them. I had to put a lot of players on the field to get more than 2 playes in a 1 square meter square.

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Answer 2

Sérgio Querido 2015-4-19

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/204004-players-distribution-in-soccer-field#answer_175832

How can i run ndhist.m's code with my requirements? - table size: 120m x 90m (the same size of soccer field) - Bean size: 1m2 - The (x,y) referencial point (0,0) is in the centre of de field.