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April 21, 2010, 12:22
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second order interpolation
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#1 |
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New Member
Join Date: Apr 2010
Posts: 5
Rep Power: 5  |
Hello guys
I have 2D function and want to do second order interpolation, any body knows the formula?  Thanks. White heart |
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April 22, 2010, 08:36
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#2 |
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Senior Member
Join Date: Nov 2009
Posts: 409
Rep Power: 8 |
Try to use a second order 2D polynomial, fit this to your data points and then use least squares to obtain the coefficients, this will work on kind of grids.
Or search in a numerical methods book for 2D interpolations (if I remember well there is a Lagrange formula for regular grids). Do |
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