×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

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

Linear interpolation
2

thread552-429128

Linear interpolation

Linear interpolation

(OP)
I am trying to perform linear interpolation for vector arrays P and M. Both arrays are defined as functions of single variable 'C'. C range is provided. Using built-in interpolation function M1=linterp(P,M,P1) gives an error: P - shall be a matrix of real numbers.
Is there a way to convert the function results into a matrix? Or perform this interpolation some other way?

Thanks!

RE: Linear interpolation

I don't understand what you are trying to do. linterp accepts arguments that are VECTORS, i.e., arrays of numbers.

po and mo are clearly defined in your example as FUNCTIONS. Since you already have po and mo as functions, there is no need for an interpolation.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm

RE: Linear interpolation

(OP)
The example I show is simplified, the real functions are more complex involving some programming, array summing and other functions. I want to store results of two functions (for x:=1..10 e.g.) in arrays so I can do interpolations between. Alternatively, I could solve equation P1=po(x) for x1 and then calculate M1=mo(x1) which is cumbersome in case of multiple calculations.
I imagined with given range of variables mathcad stores function results in arrays, just like plotting XY graph. Do I need a 'for' loop? I am just getting familiar with mathcad, so don't really know exact syntax.

RE: Linear interpolation

(OP)
Great! That makes all clear. Thank you very much!

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