colIds: Column and row summary function

In splus2R: Supplemental S-PLUS Functionality in R

Description

Summarizes the columns or rows of a rectangular object.

Usage

colIds(x, do.NULL=TRUE, prefix="col")
colMaxs(x, na.rm = FALSE, dims = 1, n = NULL)
colMedians(x, na.rm=FALSE)
colMins(x, na.rm = FALSE, dims = 1, n = NULL)
colRanges(x, na.rm = FALSE, dims = 1, n = NULL)
colVars(x, na.rm=FALSE, dims = 1, unbiased = TRUE,
        SumSquares = FALSE, weights = NULL, freq = NULL, n = NULL)
rowIds(x, do.NULL=TRUE, prefix="row")
rowMaxs(x, na.rm = FALSE, dims = 1, n = NULL)
rowMins(x, na.rm = FALSE, dims = 1, n = NULL)
rowRanges(x, na.rm = FALSE, dims = 1, n = NULL)

Arguments

x	rectangular input object such as a matrix or data.frame.
dims	if x has dimension higher than 2, dims determines what dimensions are summarized.
do.NULL	logical for rowIds or colIds.
n	number of rows; treat x as a matrix with n rows.
na.rm	logical, NA values are removed if TRUE.
prefix	character string preface for column IDs returned by rowIds or colIds.
unbiased	logical, unbiased variance estimates returned if TRUE.
SumSquares	logical, sums of squares are returned if TRUE.
weights, freq	unsupported, here for backwards compatibility.

Value

corresponding summary by row or by column.

See Also

See 'aggregate' package for alternative definitions of colStdevs, colVars, rowStdevs and rowVars functions.

Examples

## create a matrix, add dimensions, and obtain
## various summaries
x <- matrix(sin(1:20), nrow=4)
dimnames(x) <- list(c("a","b","c","d"), paste("col", 1:5))
colIds(x)
colMaxs(x)
colMedians(x)
colMins(x)
colRanges(x)
rowIds(x)
rowMaxs(x)
rowMins(x)
rowRanges(x)

Example output

[1] "col 1" "col 2" "col 3" "col 4" "col 5"
    col 1     col 2     col 3     col 4     col 5 
0.9092974 0.9893582 0.4121185 0.9906074 0.9129453 
     col 1      col 2      col 3      col 4      col 5 
 0.4912955  0.1887856 -0.5402970  0.5352274 -0.3005550 
     col 1      col 2      col 3      col 4      col 5 
-0.7568025 -0.9589243 -0.9999902 -0.2879033 -0.9613975 
          col 1      col 2      col 3      col 4      col 5
[1,] -0.7568025 -0.9589243 -0.9999902 -0.2879033 -0.9613975
[2,]  0.9092974  0.9893582  0.4121185  0.9906074  0.9129453
[1] "a" "b" "c" "d"
        a         b         c         d 
0.8414710 0.9906074 0.6569866 0.9893582 
         a          b          c          d 
-0.9613975 -0.7509872 -0.9999902 -0.7568025 
              a          b          c          d
[1,] -0.9613975 -0.7509872 -0.9999902 -0.7568025
[2,]  0.8414710  0.9906074  0.6569866  0.9893582

splus2R documentation built on Jan. 30, 2021, 9:05 a.m.