reshape2 calls melt.data.frame function incorrectly if the reshape package was loaded · Issue #63 · hadley/reshape · GitHub
![dataframe - Reshape wide data frame to long format in R using column name information - Stack Overflow dataframe - Reshape wide data frame to long format in R using column name information - Stack Overflow](https://i.stack.imgur.com/AHvQq.png)
dataframe - Reshape wide data frame to long format in R using column name information - Stack Overflow
![r - How to transform data frame with different column names from wide to long, with different column names - Stack Overflow r - How to transform data frame with different column names from wide to long, with different column names - Stack Overflow](https://i.stack.imgur.com/WmasX.png)
r - How to transform data frame with different column names from wide to long, with different column names - Stack Overflow
![merge - R: Melt dataframe by 1 column and stack the other columns that have the same name patterns - Stack Overflow merge - R: Melt dataframe by 1 column and stack the other columns that have the same name patterns - Stack Overflow](https://i.stack.imgur.com/tSvTJ.png)