Linspace for logarithmic increasing values

Hi I'm trying to find out how to make say 100 points, representing a straight line in the loglog-scale.
The line is in theory represented by y=C*x^b, but in my example only start- and end points for the line.
I want to use something like linspace. The increment in x should still be constant. Are there any functions for this? Perhaps a function to find the constant values of C and b.
Best regards Peter

2 Comments

I'm confused. A straight line in a loglog() plot comes from a power relationship, not an exponential.
x = 0:0.01:1;
b = 2;
y = 0.5*x.^b;
loglog(x,y)
Oh! I'm sorry!
I'll edit that

Sign in to comment.

Answers (1)

Since you are really interested in a power relationship that will produce a straight line in a loglog plot, why can't you use linspace.
x = linspace(0,1,100);
b = 2;
y = 0.5*x.^b;
loglog(x,y)

2 Comments

Its exactly that "y" im after but in my case the line isn't yet represented by a slope and a constant. The equation is perhaps easy to solve? I thought if there were any built in functions used to produce a discrete logarithmic function, from two points?
Thank you for the help by the way

Sign in to comment.

Categories

Find more on Mathematics in Help Center and File Exchange

Products

Asked:

on 21 May 2012

Community Treasure Hunt

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

Start Hunting!