Matrix dimension must agree error

1 次查看(过去 30 天)
  • >> Data1 = 0
  • >> spreadcodefor1 = [1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0];
  • >> result1 = xor(Data1,spreadcodefor1);
  • >> Data2 = 1
  • >> spreadcodefor2 = [1 1 0 0 0 0 1 1 0 0 1 1 1 1 0 0];
  • >> result2 = xor(Data2,spreadcodefor2);
  • >> allresult = result1 + result2;
  • >> SNR = 7;
  • >> Noise(1:48) = SNR * rand(1,1);
  • >> allnoise = allresult + Noise;
the last statement shows error saying matrix dimensions must agree. I do not know why is this happening. Kindly help

采纳的回答

Guillaume
Guillaume 2018-10-17
I do not know why is this happening
Allresult is 1x16, Noise is 1x48(assuming it didn't exist before you create it). Of course, at the error message tells you, you can't add vectors of different size.
It's really unclear why you create a noise vector with 48 elements.
Noise = rand(size(allresult)) * SNR;
would ensure that Noise always has as many elements as allresult.

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by