tut (Table-Utilities)

Stack

Stacks datasets together by column. For example:

tut stack [files ...]

df1.tsv

brand	model	mpg
tesla	3	0
toyota	previa	15

df2.tsv

car	mpg	color
ford	20	red
chevy	15	blue

tut stack df1.tsv df2.tsv

Stacked df1.tsv df2.tsv

brand	model	mpg	car	color
tesla	3	0
toyota	previa	15
		20	ford	red
		15	chevy	blue

You can also attach the basename of the file it came from to keep track of where data is coming from.

brand	model	mpg	car	color	basename
tesla	3	0			df1.tsv
toyota	previa	15			df1.tsv
		20	ford	red	df2.tsv
		15	chevy	blue	df2.tsv

I frequently use this tool to combine datasets of separate samples for comparison.

Slice

Extracts a range (1-based) from every file

 slice range [files ...]

Where range is the range of lines to keep.

• :5 - From the beginning to the 5th line
• 5: - From the 5th line to the end
• 3:5 - From the 3rd to the 5th line

Select

Select columns from a file by column position (1-based) or name.

# These are equivelent:
tut select 1,2 tests/data/df1.tsv
tut select mpg,cyl tests/data/df1.tsv

mpg	cyl
21	6
21	6
22.8	4
...	...

Global Options

Row Numbers

Add row numbers with --row-numbers

Compilation

nim c --cpu:i386 --os:linux --compileOnly tut.nim