Question

Using dplyr commands with DataFrame objects

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GE • 0

@gilad-24259

Last seen 6 months ago

United States

Hi, Is there a way to use dplyr commands on S4Vectors DataFrame objects? df <- df %>% mutate(a=str_replace(b,"hello","world"))

gives an error: Error in UseMethod("mutate") : no applicable method for 'mutate' applied to an object of class "c('DFrame', 'DataFrame', 'RectangularData', 'SimpleList', 'DataFrame_OR_NULL', 'List', 'Vector', 'list_OR_List', 'Annotated', 'vector_OR_Vector')"

S4Vectors • 543 views

ADD COMMENT • link 6 months ago GE • 0

score 0 · Answer 1 · 2023-10-16

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ATpoint ★ 4.0k

@atpoint-13662

Last seen 1 day ago

Germany

DataFrame(...) %>% data.frame %>% dplyr::anyFunction(...)

You have to convert to a base R data.frame first

ADD COMMENT • link 6 months ago ATpoint ★ 4.0k

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That won't work because my DataFrame object has columns that are only compatible with DataFrame and not with data.frame. So they will lose their 'class' type when converting to data.frame.

Is there any way to use dplyr commands on those columns that are compatible with data.frame, without losing the 'class' type of the columns that are not compatible with data.frame?

ADD REPLY • link 6 months ago GE • 0