bushfire: Campbell Bushfire Data

Description Usage Format Source Examples

Description

This data set was used by Campbell (1984) to locate bushfire scars. The dataset contains satelite measurements on five frequency bands, corresponding to each of 38 pixels.

Usage

1

Format

A data frame with 38 observations on 5 variables.

Source

Maronna, R.A. and Yohai, V.J. (1995) The Behavoiur of the Stahel-Donoho Robust Multivariate Estimator. Journal of the American Statistical Association 90, 330–341.

Examples

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Example output

Minimum Covariance Determinant (MCD) estimator approximation.
Method: Fast MCD(alpha=0.5 ==> h=22); nsamp = 500; (n,k)mini = (300,5)
Call:
covMcd(x = bushfire)
Log(Det.):  18.14 

Robust Estimate of Location:
   V1     V2     V3     V4     V5  
105.5  146.9  274.4  217.5  279.0  
Robust Estimate of Covariance:
         V1       V2     V3      V4      V5
V1    566.7    438.5  -2771  -623.5  -508.6
V2    438.5    386.9  -1843  -376.4  -318.1
V3  -2771.2  -1842.5  16367  4021.4  3195.7
V4   -623.5   -376.4   4021  1059.2   827.3
V5   -508.6   -318.1   3196   827.3   651.6

robustbase documentation built on Nov. 17, 2017, 6:46 a.m.