non-standard reshape from long to wide

Hi Bert,



No, this Is not home work related.  Original data have 87352 rows. I used
the standard reshape function and got warning message. So I reformatted the
wide format to meet my research purpose.



mut2 <-mut[,c("Tumor_Sample_Barcode","mut.id", "Hugo_Symbol")]

mut2 <-mut2[order(mut2$Hugo_Symbol),]

mut3 <-mut2[!duplicated(mut2),]

mut4 <-reshape(mut3, idvar = "Hugo_Symbol", timevar =
"Tumor_Sample_Barcode", direction = "wide")



There were 50 or more warnings (use warnings() to see the first 50)

View(mut4)

warnings()

Warning messages:

1: In reshapeWide(data, idvar = idvar, timevar = timevar,  ... :

  multiple rows match for
Tumor_Sample_Barcode=TCGA-A8-A09Z-01A-11W-A019-09: first taken

2: In reshapeWide(data, idvar = idvar, timevar = timevar,  ... :

*From:* Bert Gunter [mailto:bgunter.4567 at gmail.com]
*Sent:* Thursday, January 7, 2021 10:52 AM
*To:* Yuan Chun Ding <ycding at coh.org>
*Cc:* r-help at r-project.org
*Subject:* Re: [R] non-standard reshape from long to wide



Is this homework? There is a no-homework policy on this list.



If not, note that you are usually asked to show what you tried and the
error messages you received.


Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )





On Thu, Jan 7, 2021 at 10:40 AM Yuan Chun Ding <ycding at coh.org> wrote:

Dear R user,

I want to reshape a long data frame to wide format, I made the following
example files.  Can you help me?

Thank you,

Yuan Chun Ding

sample <-c("xr" , "xr" , "fh" , "fh" , "fh" , "uy" , "uy" , "uy" , "uy");
marker <-c("x" , "y" , "g" , "x" , "k" , "y" , "x" , "u" , "j");
df.long <-data.frame(sample, marker);

xr <-c(1,1,NA,NA,NA,NA);
fh <-c(1,NA,1,1,NA,NA);
uy <-c(1,1,NA,NA,1,1);

df.wide <- t(data.frame(xr,fh,uy));
colnames(df.wide)<-c("x","y","g","k", "u","j");

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