multiply a number to only a row in a matrix

23 次查看（过去 30 天）
Panda Girl
Panda Girl 2018-11-16
回答： perihane 2023-3-12
  • o =
  • 3×16 logical array
  • 1 1 0 0 1 1 1 0 1 0 1 1 1 1 0 1
  • 0 0 1 0 1 0 1 0 1 1 1 0 1 1 1 0
  • 1 1 0 1 0 0 1 1 0 1 1 0 0 0 0 1
  • volts0 = ((-5 + 10*(out_data))*0.35)
  • volts0 =
  • Columns 1 through 12
  • 1.7500 1.7500 -1.7500 -1.7500 1.7500 1.7500 1.7500 -1.7500 1.7500 -1.7500 1.7500 1.7500
  • -1.7500 -1.7500 1.7500 -1.7500 1.7500 -1.7500 1.7500 -1.7500 1.7500 1.7500 1.7500 -1.7500
  • 1.7500 1.7500 -1.7500 1.7500 -1.7500 -1.7500 1.7500 1.7500 -1.7500 1.7500 1.7500 -1.7500
I am trying to do the multiplication only on row1 but when I execute the syntax for volts0 it takes the entire matrix. How should I write this piece if I want to perform the multiplication only to row 1
Similarly i am trying to do for row 2 and 3 but with different numbers
please help

请先登录，再回答此问题。

回答（2 个）

madhan ravi
madhan ravi 2018-11-17
volts0(1,:)*4 % here first row is multiplied by a scalar number like you wanted
  2 个评论
Panda Girl
Panda Girl 2018-11-19
instead of the number 4 can I multiply with a random number ??
As the significance of the number 4 here is nothing but noise which is which distorts the signal and considering noise as a random variable I was trying to multiply a random number that would help me to respresent the problem statement more efficiently.
madhan ravi
madhan ravi 2018-11-20
just put rand(decimal value) or randi(integer value) in the place of 4

请先登录，再进行评论。

perihane
perihane 2023-3-12
volts0(1,:)*4

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by