What's the principle of scatteredInterpolant function ?

http://cn.mathworks.com/help/matlab/math/interpolating-scattered-data.html

it said that You could also compute the weighted sum of values of the three vertices of the enclosing triangle (the linear interpolation method).

who can tell me how to calculate the linear interpolation？and explain it is to start with an example

Answer 1

[the cyclist]

There is an example that uses linear interpolation on that same page, under the heading "Interpolating Scattered Data Using the scatteredInterpolant Class".

[li hao]

yes,there is an example,but i want to know how compute the weighted sum of values of the three vertices of the enclosing triangle ,would you tell me?