R Dataset / Package datasets / attenu
On this Picostat.com statistics page, you will find information about the attenu data set which pertains to The Joyner–Boore Attenuation Data. The attenu data set is found in the datasets R package. Try to load the attenu data set in R by issuing the following command at the console data("attenu"). This may load the data into a variable called attenu. If R says the attenu data set is not found, you can try installing the package by issuing this command install.packages("datasets") and then attempt to reload the data with library("datasets") followed by data("attenu"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing attenu at the command-line which should display the entire dataset.
If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the attenu R data set. The size of this file is about 4,110 bytes.
The Joyner–Boore Attenuation Data
This data gives peak accelerations measured at various observation stations for 23 earthquakes in California. The data have been used by various workers to estimate the attenuating affect of distance on ground acceleration.
A data frame with 182 observations on 5 variables.
Joyner, W.B., D.M. Boore and R.D. Porcella (1981). Peak horizontal acceleration and velocity from strong-motion records including records from the 1979 Imperial Valley, California earthquake. USGS Open File report 81-365. Menlo Park, Ca.
Boore, D. M. and Joyner, W.B.(1982) The empirical prediction of ground motion, Bull. Seism. Soc. Am., 72, S269–S268.
Bolt, B. A. and Abrahamson, N. A. (1982) New attenuation relations for peak and expected accelerations of strong ground motion, Bull. Seism. Soc. Am., 72, 2307–2321.
Bolt B. A. and Abrahamson, N. A. (1983) Reply to W. B. Joyner & D. M. Boore's “Comments on: New attenuation relations for peak and expected accelerations for peak and expected accelerations of strong ground motion”, Bull. Seism. Soc. Am., 73, 1481–1483.
Brillinger, D. R. and Preisler, H. K. (1984) An exploratory analysis of the Joyner-Boore attenuation data, Bull. Seism. Soc. Am., 74, 1441–1449.
Brillinger, D. R. and Preisler, H. K. (1984) Further analysis of the Joyner-Boore attenuation data. Manuscript.
require(graphics) ## check the data class of the variables sapply(attenu, data.class) summary(attenu) pairs(attenu, main = "attenu data") coplot(accel ~ dist | as.factor(event), data = attenu, show.given = FALSE) coplot(log(accel) ~ log(dist) | as.factor(event), data = attenu, panel = panel.smooth, show.given = FALSE)
Dataset imported from https://www.r-project.org.
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