pivot_to_numeric_matrix: Convert a data frame in long format to a numeric matrix

In usedist: Distance Matrix Utilities

Description

Convert a data frame in long format to a numeric matrix

Usage

pivot_to_numeric_matrix(data, obs_col, feature_col, value_col)

Arguments

data	A data frame with numerical values in long format.
obs_col	The column listing the observation, or row of the matrix.
feature_col	The column listing the feature, or column of the matrix.
value_col	The column listing the value, to be placed inside the matrix. The parameters obs_col, feature_col, and value_col should be provided as bare column names. If any combination of row and column does not appear in the data frame, a zero will be entered in the resultant matrix. This function requires the packages dplyr, tibble, and tidyr to be installed. If they are not installed, the function will generate an error, with a message to install the appropriate packages.

Examples

longdata <- data.frame(
  SampleID = paste0("Sample", c(1, 1, 1, 2, 2, 3, 3)),
  FeatureID = paste0("Feature", c(1, 2, 3, 1, 2, 2, 3)),
  Value = c(132, 41, 7, 56, 11, 929, 83))
longdata
pivot_to_numeric_matrix(longdata, SampleID, FeatureID, Value)

usedist documentation built on March 2, 2020, 1:07 a.m.