title: Series of utility functions in R using formulas. author: Charles-Édouard Giguère date: 2019-04-01
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correlation: function to produce correlation matrix. The associated print method only prints the lower triangle of the matrix.
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cont.desc: function to describe continuous variables
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cross: crosstabs builder with an optional latex and excel output. See ftab also to print a table with frequencies and percentages in one table.
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descr: function to describe a mixture of continuous and categorical variables
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freq: frequencies of a vector or a data.frame.
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strutil: Series of string utility. For a more extensive set of functions use the stringi package.
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sum.n: sum weighted by the number of non missing values.
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meansd: mean and sd displayed in a string.
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cf: Extract formated coefficient.
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clip: put a matrix-like object into clipboard.
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ftab: add percentages to a table to get percentages and frequencies in the same output.
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meansd: function that combines mean and sd in the same output. To be used with xf.
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view: view matrix-like objects in a browser like in R-studio.
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xf: Function similar to xtabs but applied to a continuous variable. This function applies a function to a variable across levels of one or more categorical variable.