unable to use the paste function with the columns of a dataframe in ggplot 2

Question

This is my problem:

this part of my script works:

paste(fileIn$DOY_L8,fileIn$type, sep="")

but not in this way

sat = "L8"
paste(fileIn$(paste("DOY_",sat,sep="")),fileIn$type, sep="")

The question is: it is possible to use the function "paste" after the $ ??

Thank you very much

CuriousBeing · Accepted Answer · 2016-02-18 00:18:49Z

1

It is not possible to use paste function like that. To get what you want, you can break it in two steps:

Create a variable that has the name of the column you want to derive. If sat<-'L8' then,
```
col1<-paste("DOY_", sat, sep="")
```
Now you can use:
```
fileIn[,col1]
```

answered Feb 17, 2016 at 23:36

CuriousBeing

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3 Comments

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