Results 1 to 5 of 5

Math Help - Log Scaling

  1. #1
    Newbie
    Joined
    Oct 2008
    Posts
    13

    Log Scaling

    Hi guys
    when i use the command semilogx(variable1,variable2) or semilogy(variable1,variable2) to polt a function where (Y-axis) is in a logarithmic scale
    i get 50% of the required curve , because the 1st half of the curve is a stright line and the other is what i need
    can you help me , i want to get the full correct curve.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by Zamorano View Post
    Hi guys
    when i use the command semilogx(variable1,variable2) or semilogy(variable1,variable2) to polt a function where (Y-axis) is in a logarithmic scale
    i get 50% of the required curve , because the 1st half of the curve is a stright line and the other is what i need
    can you help me , i want to get the full correct curve.
    What software?

    CB
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2008
    Posts
    13
    Matlab and the command i used was semilogx(variablex,variabley)

    semilogy(variablex,variabley),loglog(variablex,var iabley) don't work either
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by Zamorano View Post
    Matlab and the command i used was semilogx(variablex,variabley)

    semilogy(variablex,variabley),loglog(variablex,var iabley) don't work either
    What data are you trying to plot?

    CB
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Oct 2008
    Posts
    13
    BC thank you very much for helping me
    the big mistake i did was my loop increment
    the loop was from 1 to 1*10^6 , the increment statred from 1000
    so , the the curve started from 0 then 1000 , 2000, 3000,.......
    for this reason, the interval between 0 and 1000 was a stright line
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Scaling grades.
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: December 28th 2010, 04:43 PM
  2. Linear scaling
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 9th 2010, 08:47 PM
  3. weird scaling law...
    Posted in the Calculus Forum
    Replies: 7
    Last Post: October 27th 2010, 09:32 AM
  4. Proportion and scaling
    Posted in the Algebra Forum
    Replies: 4
    Last Post: February 25th 2009, 11:06 PM
  5. Scaling up question
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: August 23rd 2007, 02:08 AM

Search Tags


/mathhelpforum @mathhelpforum