The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: match matrix to closest values
Replies: 5   Last Post: Jun 16, 2013 3:34 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 9,850
Registered: 6/7/07
Re: match matrix to closest values
Posted: Jun 10, 2013 3:46 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On 6/10/2013 2:24 PM, Bruno Luong wrote:

> Back to the question, there is no need to compare all the pairs. This
> should do:
> h = unique(haystack(:))
> val = interp1(h,h,needle,'nearest')


Yeah, good catch, Bruno. OP might want to add

val = interp1(h,h,needle,'nearest','extrap')

to pick end points if input runs off ends rather than return NaN but
that'll be an implementation/use choice...


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.