Generate spatial data 1.0 
Date Added: September 06, 2013  Visits: 212 


The script generates spatial data with a scaleinvariant power spectrum (1/f noise) and a normal error distribution.The spectral density of the data is proportional to f^BETA, where f is the frequency and BETA is the spectral exponent (BETA=0 is white noise, BETA=2 is Brown noise).To generate Brown noise on a 10x10 grid you typespatialPattern([10,10],2)which gives a 10x10 matrix containihng the data.1/f noise is not stationary, and so doesn't have a well defined variance. A variogram of the data show variance linearly increasing with increasing lag.Time series data can also be generated. For example, a pink noise time series of lenth 1000 is produced byspatialPattern([1000,1],1)

License: Shareware  Size: 10 KB 
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