landsat: LANDSAT Data: Prediction of County Crop Areas Using Survey...
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landsat R Documentation
LANDSAT Data: Prediction of County Crop Areas Using Survey and
Satellite Data
Description
The landsat data is a compilation of survey and satellite
data from Battese et al. (1988). It consists of data on segments
(primary sampling unit; 1 segement approx. 250 hectares) under
corn and soybeans for 12 counties in north-central Iowa.
Usage
data(landsat)
Format
A data frame with 37 observations on the following 10 variables.
SegmentsInCountynumber of segments per county.
SegementIDsample segment identifier (per county).
HACornhectares of corn for each sample segment
(as reported in the June 1978 Enumerative Survey).
HASoybeanshectares of soybeans for each sample
segment (as reported in the June 1978 Enumerative Survey).
PixelsCornnumber of pixels classified
as corn for each sample segment (LANDSAT readings).
PixelsSoybeansnumber of pixels classified as
soybeans for each sample segment (LANDSAT readings).
MeanPixelsCorncounty-specific mean number of
pixels classified as corn.
MeanPixelsSoybeanscounty-specific mean number
of pixels classified as soybeans.
outlieroutlier indicator; observation number 33
is flagged as outlier.
CountyNamecounty names (factor variable):
Cerro Gordo, Hamilton, Worth, Humboldt, Franklin, Pocahontas,
Winnebago, Wright, Webster, Hancock, Kossuth, Hardin.
Details
The landsat data in Battese et al. (1988) is a compilation
of the LANDSAT satellite data from the U.S. Department of Agriculture
(USDA) and the 1978 June Enumerative Survey.
Survey data
The survey data on the areas under corn and soybeans (reported in
hectares) in the 37 segments of the 12 counties (north-central Iowa)
have been determined by USDA Statistical Reporting Service staff,
who interviewed farm operators. A segment is about 250 hectares.
Satellite data
For the LANDSAT satellite data, information is recorded as "pixels".
A pixel is about 0.45 hectares. The USDA has been engaged in
research toward transforming satellite information into good
estimates of crop areas at the individual pixel and segments
level. The satellite (LANDSAT) readings were obtained during
August and September 1978.
Data for more than one sample segment are available for several counties
(i.e., unbalanced data).
Observations No. 33 has been flaged as outlier; see Battese et al.
(1988, p. 28).
Source
The landsat data is from Table 1 of Battese et al. (1988, p. 29).
References
Battese, G. E., Harter, R. M., and W.A. Fuller (1988).
An error component model for prediction of county crop areas using.
Journal of the American Statistical Association 83, 28–36.
doi: 10.2307/2288915
Examples
data(landsat)
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| landsat | R Documentation |
LANDSAT Data: Prediction of County Crop Areas Using Survey and Satellite Data
Description
The landsat data is a compilation of survey and satellite
data from Battese et al. (1988). It consists of data on segments
(primary sampling unit; 1 segement approx. 250 hectares) under
corn and soybeans for 12 counties in north-central Iowa.
Usage
data(landsat)
Format
A data frame with 37 observations on the following 10 variables.
SegmentsInCountynumber of segments per county.
SegementIDsample segment identifier (per county).
HACornhectares of corn for each sample segment (as reported in the June 1978 Enumerative Survey).
HASoybeanshectares of soybeans for each sample segment (as reported in the June 1978 Enumerative Survey).
PixelsCornnumber of pixels classified as corn for each sample segment (LANDSAT readings).
PixelsSoybeansnumber of pixels classified as soybeans for each sample segment (LANDSAT readings).
MeanPixelsCorncounty-specific mean number of pixels classified as corn.
MeanPixelsSoybeanscounty-specific mean number of pixels classified as soybeans.
outlieroutlier indicator; observation number 33 is flagged as outlier.
CountyNamecounty names (factor variable): Cerro Gordo, Hamilton, Worth, Humboldt, Franklin, Pocahontas, Winnebago, Wright, Webster, Hancock, Kossuth, Hardin.
Details
The landsat data in Battese et al. (1988) is a compilation
of the LANDSAT satellite data from the U.S. Department of Agriculture
(USDA) and the 1978 June Enumerative Survey.
Survey data
The survey data on the areas under corn and soybeans (reported in hectares) in the 37 segments of the 12 counties (north-central Iowa) have been determined by USDA Statistical Reporting Service staff, who interviewed farm operators. A segment is about 250 hectares.
Satellite data
For the LANDSAT satellite data, information is recorded as "pixels". A pixel is about 0.45 hectares. The USDA has been engaged in research toward transforming satellite information into good estimates of crop areas at the individual pixel and segments level. The satellite (LANDSAT) readings were obtained during August and September 1978.
Data for more than one sample segment are available for several counties (i.e., unbalanced data).
Observations No. 33 has been flaged as outlier; see Battese et al. (1988, p. 28).
Source
The landsat data is from Table 1 of Battese et al. (1988, p. 29).
References
Battese, G. E., Harter, R. M., and W.A. Fuller (1988). An error component model for prediction of county crop areas using. Journal of the American Statistical Association 83, 28–36. doi: 10.2307/2288915
Examples
data(landsat)
R Package Documentation
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