×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

calculate intercept of two data sets

calculate intercept of two data sets

calculate intercept of two data sets

(OP)
Is there a way to calculate the intercept of two data sets?

Example: I have a set of data "VX" which contains 100 points marking the X Points for data set 1 and 2.  I also have "VY1" which contains 100 points marking the Y points for data set 1, and "VY2" which contains 100 points marking the Y points for data set 2.  I want to calculate the X point that will return the same value when I do a linear interpolation of both sets of data.

In other words; how do I find the x value so that linterp(VX,VY1,X)=linterp(VX,VY2,X)?

RE: calculate intercept of two data sets

(OP)
After reading my own post I figured out I can use a solve block.  I am still open to any suggestions you guys can offer.

X':=1
Given
linterp(VX,VY1,X')[ctrl+=]linterp(VX,VY2,X')
X:=Find(X')

RE: calculate intercept of two data sets

That generally works well, with the possible exception when the intercept is near the end point of either line.  I've done this on some specific problems and endpoints can give you squirrelly results.

TTFN

FAQ731-376: Eng-Tips.com Forum Policies

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!


Resources