plotting an array of doubles

Question

ksew ksew 2013-4-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69981-plotting-an-array-of-doubles

im trying to plot an array with length of (5001 x 101 double) and need to store then in another array. I am using the following code to do so however only 1 values is being stored what im doing wrong

    % code
for n =1:1:5001
    snr1 = rms(input(n))/ rms(out(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

Azzi Abdelmalek 2013-4-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69981-plotting-an-array-of-doubles#answer_81083

在 MATLAB Online 中打开

Use

snr1(i)

2 个评论
显示无隐藏无

ksew ksew 2013-4-5

编辑：Azzi Abdelmalek 2013-4-5

在 MATLAB Online 中打开

i did this still nothing works

for n =1:1:5001
  snr1(i) = rms(input(n))/ rms(out(n));
end

Azzi Abdelmalek 2013-4-5

编辑：Azzi Abdelmalek 2013-4-5

在 MATLAB Online 中打开

In your case, the counter is n not i then use

snr1(n)

请先登录，再进行评论。

Answer 2

Carlos 2013-4-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69981-plotting-an-array-of-doubles#answer_81085

在 MATLAB Online 中打开

He means that you should do

for n =1:1:5001
      snr1(n) = rms(input(n))/ rms(out(n));
  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。

Answer 3

Jan 2013-4-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69981-plotting-an-array-of-doubles#answer_81093

在 MATLAB Online 中打开

The suggested methods might work partially only, and this means, that they fail. You want a "5001 x 101 double" array, such that I guess the right hand side replies an [1 x 101] vector. Then:

snr1 = zeros(5001, 101);  % Pre-allocate for speed!!!
for n = 1:5001
    snr1(n, :) = rms(input(n)) / rms(out(n));
end

Using "input" as name of a variable has the disadvantage, that it shadows the built-in function with the same name. Such shadowing causes unexpected troubles frequently.