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Data Analysis and Statistics for Geography, Environmental Science, and Engineering
book

Data Analysis and Statistics for Geography, Environmental Science, and Engineering

by Miguel F. Acevedo
December 2012
Beginner content levelBeginner
557 pages
19h 5m
English
CRC Press
Content preview from Data Analysis and Statistics for Geography, Environmental Science, and Engineering
304 Data Analysis and Statistics for Geography, Environmental Science, and Engineering
Package sgeostat’s theta angle convention is angle with respect to E and counter clockwise. So, NE
would be θ = 45, N would be θ = 90, NW would be θ = 135, SW would be θ = 225, S would be
θ=270, and SE would be θ = 315.
Generate pairs for NE direction with narrow tolerance of 7.5°
>maas45.v <- vario(maas,num.lags=10,type=‘anisotropic’, theta=45,
dtheta=7.5, maxdist=2000)
The variogram
> maas45.v
lags bins classic robust med n
1 1 99.95315 135180.0 68358.08 104208.72 31
2 2 299.85945 132956.6 88038.82 85371.46 72
3 3 499.76576 189284.1 101127.83 51681.92 104
4 4 699.67206 ...
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Publisher Resources

ISBN: 9781439885017