Executing index value for unequal vector lengths

Good day useRs,

I have the data of two vectors
dput(DDD)
c(1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
2020, 2021)
dput(EEE)
c(2018, 2019, 2020, 2021)

You can see that 2018, 2019, 2020, 2021 are equal in both vectors.

I want to execute the index values for the values in DDD which are equal to EEE (31,32,33,34); and also the index values where EEE values are equal to DDD (1,2,3,4).

I tried the following commend but it didn't work
which(EEE==DDD))
I thank-you very much in advance
On Wed, 20 Apr 2022 06:18:14 +0000

EEE==DDD
== doesn't work because it's element-wise. Try the %in% operator, or
setdiff() if you know that EEE and DDD are sets and you'd like to be
fancy.
Best regards,
Ivan
?match
Good day useRs,

I have the data of two vectors

dput(DDD)
c(1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
2020, 2021)

dput(EEE)
c(2018, 2019, 2020, 2021)

You can see that 2018, 2019, 2020, 2021 are equal in both vectors.

I want to execute the index values for the values in DDD which are equal to EEE (31,32,33,34); and also the index values where EEE values are equal to DDD (1,2,3,4).

I tried the following commend but it didn't work

which(EEE==DDD))
I thank-you very much in advance

[[alternative HTML version deleted]]

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