Rank: 24979 based on downloads (last 30 days) and 0 files submitted

carlos lopez

E-mail: Contact Author
Lat/Long: -34.0, -56.0

Personal Profile:
Professional Interests:

Files

Comments and Ratings by carlos		1 - 1 of 1
Updated	File	Comments	Rating
07 Sep 2009	tinterp - an alternative to griddata Linear and quadratic interpolation for scattered data Author: Darren Engwirda	I would like to have more information of the theory behind this. What it means that it is "quadratic"? Should it be exact for 2nd. degree functions? I tried this X=[1:10 1:10];Y=[zeros(1,10) ones(1,10)];%Data points f=100*(X').^2; %data points tri=delaunay(X,Y);%Triangulation triplot(tri,X,Y) %to interpret the case x=linspace(0,11,300);y=repmat(0.5,1,300); fC=tinterp([X' Y'],tri,f,x,y,'quadratic'); plot(diff(fC));%should be linear if the interpolant is exact for 2nd degree Apparently from this example the interpolant is C0 (i.e. continuous but not differentiable), but it is a little bit misleading what is meant by "quadratic". I tried to contact the author before posting, but apparently changed addres. Thank you anyway for his contribution.

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.