Code covered by the BSD License
Highlights from
vebyk
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buildbigc3(position,anisotrop...
this function calculates the matrix containing the covariance values
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buildsmallc3(position,anisotr...
this function calculates the covariances between the points used for
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covcalc(lag,nu,a)
this function contains the model for the covariance function. the
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displacement3(position,anisot...
creates a matrix with distances between all points. for use with
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inputmatrix(matrix,dx,dy)
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kriging3(position,anisotropy,...
kriging is a algoritm for interpolation based on minimation of the
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matrixdisplay(input,length,he...
creates a image of a input matrix in the form:
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minimizing2(C,c)
minimizing2 calculates the factors 'lambda' by minimizing the variances.
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neighborhood(x,y,coord,points...
searches the neighborhood of the point (x,y) for the nearest
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neighborhood2(x,y,coord,point...
searches the neighborhood of the point (x,y) for the nearest
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ordinary(C,c)
appends mu to small c and ones to big C for ordynary kriging. that means
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rotation(coord,alpha)
rotates all coordinates round the coordinate origin for the angle
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vebyk(coord,dgrid,points,anis...
Value Estimation BY Kriging:
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View all files
vebyk
by Rolf Sidler
03 Mar 2004
(Updated 19 May 2009)
vebyk performs ordinary kriging and can be easily adapted to other kriging methods.
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Watch this File
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| File Information |
| Description |
The program is designed to interpolate values on a regular two-dimensional grid using ordinary kriging. By slightly modifying the code it is also possible to use simple kriging. The grid of estimated or "kriged" values is rectangular and spans the range of coordinates in the dataset of sampled values. The spacing between estimated points for x- and y-axes can be specified individually and the sampled values do not have to follow a spatial order.
For the search neighborhood, the number of points used for interpolation can be specified. Arbitrarily oriented spatial anisotropy of the covariance function can be accounted for. The current implementation is based on the von Karman family of covariance function. The correlation length a and the exponent nu of the von Karman function can be specified.
Finally, "handles" are provided to switch on a wait bar or a cross validation mode for comparison of the interpolated value at a sampled location. |
| MATLAB release |
MATLAB 6.1 (R12.1)
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| Comments and Ratings (2) |
| 02 Jan 2006 |
FEKI Haifa
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| 02 Mar 2006 |
zhang lei
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| Updates |
| 10 Jul 2006 |
Updated broken link in readme file. |
| 19 May 2009 |
Added license. |
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