Jeff Newmiller
2021-Sep-15 03:32 UTC
[R] How to remove all rows that have a numeric in the first (or any) column
An atomic column of data by design has exactly one mode, so if _any_ values are non-numeric then the entire column will be non-numeric. What does str(VPN_Sheet1$HVA) tell you? It is likely either a factor or character data. On September 14, 2021 7:01:53 PM PDT, Gregg Powell via R-help <r-help at r-project.org> wrote:> > > >> Stuck on this problem - How does one remove all rows in a dataframe that have a numeric in the first (or any) column? >> > >> Seems straight forward - but I'm having trouble. >> > > >I've attempted to used: > >VPN_Sheet1 <- VPN_Sheet1[!is.numeric(VPN_Sheet1$HVA),] > >and > >VPN_Sheet1 <- VPN_Sheet1[!is.integer(VPN_Sheet1$HVA),] > >Neither work - Neither throw an error. > >class(VPN_Sheet1$HVA) returns: >[1] "list" > >So, the HVA column returns a list. > >> >> Data looks like the attached screen grab - >> > >> The ONLY rows I need to delete are the rows where there is a numeric in the HVA column. >> > >> There are some 5000+ rows in the actual data. >> > >> Would be grateful for a solution to this problem. > >How to get R to detect whether the value in column 1 is a number so the rows with the number values can be deleted? >> > >> Thanks in advance to any and all willing to help on this problem. >> > >> Gregg Powell >> > >> Sierra Vista, AZ-- Sent from my phone. Please excuse my brevity.
Gregg Powell
2021-Sep-15 03:38 UTC
[R] How to remove all rows that have a numeric in the first (or any) column
Here is the output:> str(VPN_Sheet1$HVA)List of 2174 $ : chr "Email: fffd at fffffffffff.com" $ : num 1 $ : chr "Eloisa Libas" $ : chr "Percival Esquejo" $ : chr "Louchelle Singh" $ : num 2 $ : chr "Charisse Anne Tabarno, RN" $ : chr "Sol Amor Mucoy" $ : chr "Josan Moira Paler" $ : num 3 $ : chr "Anna Katrina V. Alberto" $ : chr "Nenita Velarde" $ : chr "Eunice Arrances" $ : num 4 $ : chr "Catherine Henson" $ : chr "Maria Carla Daya" $ : chr "Renee Ireine Alit" $ : num 5 $ : chr "Marol Joseph Domingo - PS" $ : chr "Kissy Andrea Arriesgado" $ : chr "Pia B Baluyut, RN" $ : num 6 $ : chr "Gladys Joy Tan" $ : chr "Frances Zarzua" $ : chr "Fairy Jane Nery" $ : num 7 $ : chr "Gladys Tijam, RMT" $ : chr "Sarah Jane Aramburo" $ : chr "Eve Mendoza" $ : num 8 $ : chr "Gloria Padolino" $ : chr "Joyce Pearl Javier" $ : chr "Ayza Padilla" $ : num 9 $ : chr "Walfredson Calderon" $ : chr "Stephanie Anne Militante" $ : chr "Rennua Oquilan" $ : num 10 $ : chr "Neil John Nery" $ : chr "Maria Reyna Reyes" $ : chr "Rowella Villegas" $ : num 11 $ : chr "Katelyn Mendiola" $ : chr "Maria Riza Mariano" $ : chr "Marie Vallianne Carantes" $ : num 12 ??????? Original Message ??????? On Tuesday, September 14th, 2021 at 8:32 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote:> An atomic column of data by design has exactly one mode, so if any values are non-numeric then the entire column will be non-numeric. What does >> str(VPN_Sheet1$HVA) >> tell you? It is likely either a factor or character data. >> On September 14, 2021 7:01:53 PM PDT, Gregg Powell via R-help r-help at r-project.org wrote: >> > > Stuck on this problem - How does one remove all rows in a dataframe that have a numeric in the first (or any) column? > >> > > Seems straight forward - but I'm having trouble. > >> > I've attempted to used: > >> > VPN_Sheet1 <- VPN_Sheet1[!is.numeric(VPN_Sheet1$HVA),] > >> > and > >> > VPN_Sheet1 <- VPN_Sheet1[!is.integer(VPN_Sheet1$HVA),] > >> > Neither work - Neither throw an error. > >> > class(VPN_Sheet1$HVA) returns: > >> > [1] "list" > >> > So, the HVA column returns a list. > >> > > Data looks like the attached screen grab - > >> > > The ONLY rows I need to delete are the rows where there is a numeric in the HVA column. > >> > > There are some 5000+ rows in the actual data. > >> > > Would be grateful for a solution to this problem. > >> > How to get R to detect whether the value in column 1 is a number so the rows with the number values can be deleted? > >> > > Thanks in advance to any and all willing to help on this problem. > >> > > Gregg Powell > >> > > Sierra Vista, AZ >> -- >> Sent from my phone. Please excuse my brevity.-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 509 bytes Desc: OpenPGP digital signature URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20210915/678b14a1/attachment.sig>