Filter error in dplyr: can't transform a data frame with duplicate names

background

Process a data frame , use filter When filtering data , Found this error ：

aa1 %>% filter(POS_strt == “20696”)
Error in filter():
! Can’t transform a data frame with duplicate names.
Run rlang::last_error() to see where the error occurred.

Follow the prompts to run ：rlang::last_error(), I didn't see the problem ：

> rlang::last_error()
<error/rlang_error>
Error in `filter()`:
! Can't transform a data frame with duplicate names.
---
Backtrace:
 1. aa1 %>% filter(POS_strt == "20696")
 3. dplyr:::filter.data.frame(., POS_strt == "20696")
Run `rlang::last_trace()` to see the full context.

I've been searching the Internet for a long time , It's finally settled , To sum up .

Problem solving

This is mainly because the column names in the data frame are duplicate , In fact, the error report also gives ：

! Can’t transform a data frame with duplicate names.

however , I thought it was rownames Repeat , It's actually colnames Repeat , Check it out here ：

names(aa1) %>% duplicated() %>% table

You can see , There is a repetition .

use make.names Process the following name , Duplicate suffix plus .1

nn = names(aa1)
names(aa1) = make.names(nn,unique = T)
names(aa1)

You can see , The red box in the picture ,Chrom.1 The name has changed , After this treatment , There will be no repetition . Test it ：

Get it done ！

summary

tidyverse Data frame , There must be no duplicate column names , No filter Such functions cannot be used . The solution can be base In bag make.names Handle , Rename .