statistics {GCDkit} | R Documentation |
Calculates simple descriptive statistics respecting grouping. Optionally can be plotted boxplots and/or histograms.
statistics(where = WR, elems, groups = rep("", nrow(where)), which = "", boxplots = TRUE, histograms = TRUE, print.table = TRUE, sub = "")
where |
name of the data matrix |
elems |
list of elements/oxides |
groups |
grouping information, default=no grouping |
which |
which of the groups are to be shown |
boxplots |
logical, plot boxplots? |
histograms |
logical, plot histograms? |
print.table |
logical, print the resulting table? |
sub |
subtitle for the histograms/boxplots |
The function returns a list containing the calculated statistical parameters respecting the desired grouping. The statistical summary involves number of observations, missing values, mean, standard deviation, minimum, 25% quartile, median (= 50% quartile), 75% quartile and maximum.
results |
a list with the results for individual groups |
Vojtěch Janoušek, vojtech.janousek@geology.cz
summarySingle
summarySingleByGroup
summaryAll
summaryByGroup
data(blatna) accessVar("blatna") i<-statistics(elems=c("SiO2","TiO2","Al2O3","Na2O","K2O"), boxplots=FALSE,histograms=FALSE)