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Editorial Team
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Asked: 2026-05-26T01:41:15+00:00

I am working with a data frame in which I need to edit the

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I am working with a data frame in which I need to edit the entries in one particular column to allow for easy sorting. The data frame looks like this when imported:

     Assay    Genotype Description Sample   Operator
1    CCT6-18  C    A.Conservative  1_062911 Automatic   
2    CCT6-24  C       E.User Call  1_062911   charles
3    CCT6-25  A    A.Conservative  1_062911 Automatic

I need to change the assay column from CCT6-18 to CCT6-018. This “assay” appears multiple times within the data frame and I’d like to change all of the entries at once. Ive tried the gsub function but it returns data in a format that I am unfamiliar with. I’d like to get the data back in a data frame.

Help!

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1 Answer

  1. Editorial Team
    df$Assay <- replace(df$Assay, df$Assay=="CCT6-18", "CCT6-018")

    Should see you right.

    Also, try str(df) or class(df$Assay) to see what class your Assay column is. If it is a factor this could be the reason you’re getting tripped up. If so run df$Assay <- as.character(df$Assay) first.

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