Arranging values in an array

Question

QuantumReversing 2012-6-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42129-arranging-values-in-an-array

I have some values in an array that I need to organize in ranges. lets say I am given different ages of people and I want to arrange them by their age group.

0-10, 11-20, 21-30, 31-40 I have been working on some code but I am uncertain how to finish it. Here is my code. Even just printing how many are in each range is fine with me.

Any help is greatly appreciated!

x = [3, 4, 8, 9, 9, 12, 12, 14, 14, 15, 17, 19, 21, 21, 22, 25, 27, 31, 32, 35, 35, 38];
for i = 1:size(x,1);
    if(x <= 10);
    elseif(x >=11)&(x <=20);
    elseif(x >= 21)&(x <=30);
    elseif(x >=31);
    else
    fprintf 'No values match your conditions\n'
    end
end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2012-6-27

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42129-arranging-values-in-an-array#answer_51878

在 MATLAB Online 中打开

You can do what you tried if you want to execute some code depending on the value. Or you can use histc(), if that's what you mean by organize.

x = [3, 4, 8, 9, 9, 12, 12, 14, 14, 15, 17, 19, 21, 21, 22, 25, 27, 31, 32, 35, 35, 38]
ranges = [0,11,21,31,41]
counts = histc(x, ranges)

In the command window:

x =
  Columns 1 through 14
     3     4     8     9     9    12    12    14    14    15    17    19    21    21
  Columns 15 through 22
    22    25    27    31    32    35    35    38
ranges =
     0    11    21    31    41
counts =
     5     7     5     5     0

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

QuantumReversing 2012-6-27

awesome that is exactly what I was looking for. I guess I need to familiarize myself with built in functions of MATLAB instead of trying to manually do it with C code.

请先登录，再进行评论。