# make_mat: Make a two-way table In metan: Multi Environment Trials Analysis

## Description

This function help users to easily make a two-way table from a "long format" data.

## Usage

 1 make_mat(.data, row, col, value, fun = mean) 

## Arguments

 .data The dataset. Must contains at least two categorical columns. row The column of data in which the mean of each level will correspond to one line in the output. col The column of data in which the mean of each level will correspond to one column in the output. value The column of data that contains the values to fill the two-way table. fun The function to apply. Defaults to mean, i.e., the two-way table will show the mean values for each genotype-environment combination. Other R base functions such as max, min, sd, var, or an own function that return a single numeric value can be used.

## Value

A two-way table with the argument row in the rows, col in the columns, filled by the argument value.

## Author(s)

Tiago Olivoto tiagoolivoto@gmail.com

## Examples

 1 2 3 4 5 6 7 library(metan) matrix <- data_ge %>% make_mat(row = GEN, col = ENV, val = GY) matrix # standart error of mean data_ge %>% make_mat(GEN, ENV, GY, sem) 

metan documentation built on Nov. 10, 2021, 9:11 a.m.