transpose help

[MostafaYA]

Prerequisites

• make sure you're are using the latest version by csvtk version
• read the usage

Describe your issue

• describe the problem
• provide a reproducible example

Hi, I have the this example example.txt

id	pattern	value
s1	a	1
s1	b	2
s1	c	3
s1	d	4
s1	e	5
s1	f	6
s1	g	7
s1	h	8
s1	i	9
s1	j	10
s2	a	1
s2	b	2
s2	c	3
s2	d	4
s2	e	5
s2	f	6
s2	g	7
s2	h	8
s2	i	9
s2	j	10
s3	a	1
s3	b	2
s3	c	3
s3	d	4
s3	e	5
s3	f	6
s3	g	7
s3	h	8
s3	i	9
s3	j	10
s3	k	11

and want to get an output like the one below. Pattern as a header, id as row name.

pattern	a	b	c	d	e	f	g	h	i	j
s1	1	2	3	4	5	6	7	8	9	10
s2	1	2	3	4	5	6	7	8	9	10
s3	1	2	3	4	5	6	7	8	9	10

I am doing the following that looks a bit inelegant solution. I beleive there might be a functionality within csvtk to do this better but am not aware of it. Can you please guide?

cat example.tsv  | csvtk split -t -f 1 -o example-split

for i in example-split/*.tsv; do 
  name=`basename $i`;
  cat $i | csvtk rename -t -f 3 -n $name -o example-split/renamed_"$name"; 
done 

for i in example-split/renamed_* ; do 
  cat $i | csvtk cut -t -f 2,3 | csvtk transpose -t -o "$i"_transposed ; 
done

csvtk concat  -t example-split/renamed_*transposed | csvtk pretty -t -S bold

this gives these results

pattern	a	b	c	d	e	f	g	h	i	j
stdin-s1.tsv	1	2	3	4	5	6	7	8	9	10
stdin-s2.tsv	1	2	3	4	5	6	7	8	9	10
stdin-s3.tsv	1	2	3	4	5	6	7	8	9	10

Thank you

I'm grateful to users who have greatly helped to report bugs and suggested new features.

I may respond to issues or fix bugs quickly, but I usually implement new features periodically (two or more weeks).

[MostafaYA]

Just realised another solution outside csvtk .

datamash -s --header-in --header-out crosstab 1,2 < example.tsv

It would be however nice to have it with csvtk to reduce dependencies

[shenwei356]

I will implement it.
#91
#236

[shenwei356]

Implemented. Use binaries here: #91 (comment)

$ csvtk spread -t -k pattern -v value example.txt | csvtk csv2md -t

id	a	b	c	d	e	f	g	h	i	j	k
s1	1	2	3	4	5	6	7	8	9	10
s2	1	2	3	4	5	6	7	8	9	10
s3	1	2	3	4	5	6	7	8	9	10	11