×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

control number of points in a multi-decade log plot

control number of points in a multi-decade log plot

control number of points in a multi-decade log plot

(OP)
Hi all,
anyone knows the best way to control the number of points in a log plot, i want to specify a number of point per decade, normal way generates too many points.
Ty a bunch.

RE: control number of points in a multi-decade log plot

What does the plot have to do with how many points you specified?

If you need a specific point distribution, create one and stick in a vector and plot against the vector.

TTFN

RE: control number of points in a multi-decade log plot

I have used the following to generate a vector of currents (i) to plot on the X axis which are evenly spaced on a log plot:

x:=N/log(nmax/nmin)

where N is the number of points desired
nmin is the lowest multiple of a base current
nmax is the highest multiple of a base current

n:=0..N
in:=10·nmin·10^((n-x)/x)

in is a vector of currents in per unit of the base current

If you wanted 3 decades between 0.1 and 100, with 5 points per decade, you would make

nmin:=0.1
nmax:=100
N:=15

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close