Reorder levels of a factor without changing order of values

Reorder levels of a factor without changing order of values

r sorting levels r-faq

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`levels<-`( What sorcery is this?

r types levels

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ggplot2 keep unused levels barplot

r ggplot2 legend levels

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Re-ordering factor levels in data frame [duplicate]

r dataframe levels r-faq

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How can I drop unused levels from a data frame?

r levels

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Why is the terminology of labels and levels in factors so weird?

r levels factors

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R- split histogram according to factor level

r histogram levels

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Mean by factor by level

r mean levels factors

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How to change name of factor levels?

r rename levels

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Removing the levels attribute in the output - R

r matrix levels

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Recode/relevel data.frame factors with different levels

r levels

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