normalize_df_per_dim {YAPSA} | R Documentation

## Useful functions on data frames

### Description

`normalize_df_per_dim`: Normalization is carried out by dividing by `rowSums` or `colSums`; for rows with `rowSums=0` or columns with `colSums=0`, the normalization is left out.

`average_over_present`: If averaging over columns, zero rows (i.e. those with `rowSums=0`) are left out, if averaging over rows, zero columns (i.e. those with `colSums=0`) are left out.

`sd_over_present`: If computing the standard deviation over columns, zero rows (i.e. those with `rowSums=0`) are left out, if computing the standard deviation over rows, zero columns (i.e. those with `colSums=0`) are left out.

`stderrmean_over_present`: If computing the standard error of the mean over columns, zero rows (i.e. those with `rowSums=0`) are left out, if computing the standard error of the mean over rows, zero columns (i.e. those with `colSums=0`) are left out. Uses the function `stderrmean`

### Usage

    normalize_df_per_dim(in_df, in_dimension)

    average_over_present(in_df, in_dimension)

    sd_over_present(in_df, in_dimension)

    stderrmean_over_present(in_df, in_dimension)

### Arguments

`in_df` | Data frame to be normalized
`in_dimension` | Dimension along which the operation will be carried out

### Value

The normalized numerical data frame (`normalize_df_per_dim`)

A vector of the means (`average_over_present`)

A vector of the standard deviations (`sd_over_present`)

A vector of the standard errors of the mean (`stderrmean_over_present`)

### See Also

`stderrmean`

### Examples

    test_df <- data.frame(matrix(c(1,2,3,0,5,2,3,4,0,6,0,0,0,0,0,4,5,6,0,7),
                                 ncol=4))
    ## 1. Normalize over rows:
    normalize_df_per_dim(test_df,1)
    ## 2. Normalize over columns:
    normalize_df_per_dim(test_df,2)

    test_df <- data.frame(matrix(c(1,2,3,0,5,2,3,4,0,6,0,0,0,0,0,4,5,6,0,7),
                                 ncol=4))
    ## 1. Average over non-zero rows:
    average_over_present(test_df,1)
    ## 2. Average over non-zero columns:
    average_over_present(test_df,2)

    test_df <- data.frame(matrix(c(1,2,3,0,5,2,3,4,0,6,0,0,0,0,0,4,5,6,0,7),
                                 ncol=4))
    ## 1. Compute standard deviation over non-zero rows:
    sd_over_present(test_df,1)
    ## 2. Compute standard deviation over non-zero columns:
    sd_over_present(test_df,2)

    test_df <- data.frame(matrix(c(1,2,3,0,5,2,3,4,0,6,0,0,0,0,0,4,5,6,0,7),
                                 ncol=4))
    ## 1. Compute standard deviation over non-zero rows:
    stderrmean_over_present(test_df,1)
    ## 2. Compute standard deviation over non-zero columns:
    stderrmean_over_present(test_df,2)

[Package YAPSA version 1.18.0 Index]