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Description

Another cross-platform, efficient, practical and pretty CSV/TSV toolkit

Yes, you could just use spreadsheet softwares like MS excel to do most of the job.

Howerver it's all by clicking and typing, which is not automatically and time-consuming to repeate, especially when we want to apply similar operations with different datasets or purposes.

Hope it be helpful to you.

Programming language: Go
Tags: Utilities     CSV     TSV    

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README

csvtk - A cross-platform, efficient and practical CSV/TSV toolkit

Introduction

Similar to FASTA/Q format in field of Bioinformatics, CSV/TSV formats are basic and ubiquitous file formats in both Bioinformatics and data sicence.

People usually use spreadsheet softwares like MS Excel to do process table data. However it's all by clicking and typing, which is not automatically and time-consuming to repeat, especially when we want to apply similar operations with different datasets or purposes.

You can also accomplish some CSV/TSV manipulations using shell commands, but more codes are needed to handle the header line. Shell commands do not support selecting columns with column names either.

csvtk is convenient for rapid data investigation and also easy to be integrated into analysis pipelines. It could save you much time of writing Python/R scripts.

Table of Contents

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Features

  • Cross-platform (Linux/Windows/Mac OS X/OpenBSD/FreeBSD)
  • Light weight and out-of-the-box, no dependencies, no compilation, no configuration
  • Fast, multiple-CPUs supported
  • Practical functions supported by N subcommands
  • Support STDIN and gziped input/output file, easy being used in pipe
  • Most of the subcommands support unselecting fields and fuzzy fields, e.g. -f "-id,-name" for all fields except "id" and "name", -F -f "a.*" for all fields with prefix "a.".
  • Support some common plots (see usage)
  • Seamlessly support for data with meta line (e.g., sep=,) of separator declaration used by MS Excel

Subcommands

35 subcommands in total.

Information

  • headers: prints headers
  • dim: dimensions of CSV file
  • summary: summary statistics of selected digital fields (groupby group fields)

Format conversion

  • pretty: converts CSV to readable aligned table
  • csv2tab: converts CSV to tabular format
  • tab2csv: converts tabular format to CSV
  • space2tab: converts space delimited format to CSV
  • transpose: transposes CSV data
  • csv2md: converts CSV to markdown format
  • csv2json: converts CSV to JSON format
  • xlsx2csv: converts XLSX to CSV format

Set operations

  • head: prints first N records
  • concat: concatenates CSV/TSV files by rows
  • sample: sampling by proportion
  • cut: selects parts of fields
  • grep: greps data by selected fields with patterns/regular expressions
  • uniq: unique data without sorting
  • freq: frequencies of selected fields
  • inter: intersection of multiple files
  • filter: filters rows by values of selected fields with arithmetic expression
  • filter2: filters rows by awk-like arithmetic/string expressions
  • join: joins multiple CSV files by selected fields
  • split splits CSV/TSV into multiple files according to column values
  • splitxlsx: splits XLSX sheet into multiple sheets according to column values
  • collapse: collapses one field with selected fields as keys

Edit

  • add-header: add column names
  • del-header: delete column names
  • rename: renames column names
  • rename2: renames column names by regular expression
  • replace: replaces data of selected fields by regular expression
  • mutate: creates new columns from selected fields by regular expression
  • mutate2: creates new column from selected fields by awk-like arithmetic/string expressions
  • gather: gathers columns into key-value pairs

Ordering

  • sort: sorts by selected fields

Ploting

Misc

Installation

Download Page

csvtk is implemented in Go programming language, executable binary files for most popular operating systems are freely available in release page.

Method 1: Download binaries (latest stable/dev version)

Just download compressed executable file of your operating system, and decompress it with tar -zxvf *.tar.gz command or other tools. And then:

  1. For Linux-like systems

    1. If you have root privilege simply copy it to /usr/local/bin:

      sudo cp csvtk /usr/local/bin/

    2. Or copy to anywhere in the environment variable PATH:

      mkdir -p $HOME/bin/; cp csvtk $HOME/bin/

  2. For windows, just copy csvtk.exe to C:\WINDOWS\system32.

Method 2: Install via conda (latest stable version) Install-with-conda Anaconda Cloud downloads

conda install -c bioconda csvtk

Method 3: For Go developer (latest stable/dev version)

go get -u github.com/shenwei356/csvtk/csvtk

Method 4: For ArchLinux AUR users (may be not the latest)

yaourt -S csvtk

Bash-completion

Note: The current version supports Bash only. This should work for *nix systems with Bash installed.

Howto:

  1. run: csvtk genautocomplete

  2. create and edit ~/.bash_completion file if you don't have it.

    nano ~/.bash_completion

    add the following:

    for bcfile in ~/.bash_completion.d/* ; do
  . $bcfile
done

Compared to csvkit

csvkit

Features csvtk csvkit Note
Read Gzip Yes Yes read gzip files
Fields ranges Yes Yes e.g. -f 1-4,6
Unselect fileds Yes -- e.g. -1 for excluding first column
Fuzzy fields Yes -- e.g. ab* for columns with name prefix "ab"
Reorder fields Yes Yes it means -f 1,2 is different from -f 2,1
Rename columns Yes -- rename with new name(s) or from existed names
Sort by multiple keys Yes Yes bash sort like operations
Sort by number Yes -- e.g. -k 1:n
Multiple sort Yes -- e.g. -k 2:r -k 1:nr
Pretty output Yes Yes convert CSV to readable aligned table
Unique data Yes -- unique data of selected fields
frequency Yes -- frequencies of selected fields
Sampling Yes -- sampling by proportion
Mutate fields Yes -- create new columns from selected fields
Repalce Yes -- replace data of selected fields

Similar tools:

  • csvkit - A suite of utilities for converting to and working with CSV, the king of tabular file formats. http://csvkit.rtfd.org/
  • xsv - A fast CSV toolkit written in Rust.
  • miller - Miller is like sed, awk, cut, join, and sort for name-indexed data such as CSV and tabular JSON http://johnkerl.org/miller
  • tsv-utils-dlang - Command line utilities for tab-separated value files written in the D programming language.

Examples

More examples and tutorial.

Attention

  1. The CSV parser requires all the lines have same number of fields/columns. Even lines with spaces will cause error. Use '-I/--ignore-illegal-row' to skip these lines if neccessary.
  2. By default, csvtk thinks your files have header row, if not, switch flag -H on.
  3. Column names better be unique.
  4. By default, lines starting with # will be ignored, if the header row starts with #, please assign flag -C another rare symbol, e.g. '$'.
  5. By default, csvtk handles CSV files, use flag -t for tab-delimited files.
  6. If " exists in tab-delimited files, use flag -l.
  7. Do not mix use digital fields and column names.

Examples

  1. Pretty result

    $ csvtk pretty names.csv
id   first_name   last_name   username
11   Rob          Pike        rob
2    Ken          Thompson    ken
4    Robert       Griesemer   gri
1    Robert       Thompson    abc
NA   Robert       Abel        123

  2. Summary of selected digital fields, supporting "group-by"

    $ cat testdata/digitals2.csv \
    | csvtk summary --ignore-non-digits --fields f4:sum,f5:sum --groups f1,f2 \
    | csvtk pretty
f1    f2     f4:sum   f5:sum
bar   xyz    7.00     106.00
bar   xyz2   4.00     4.00
foo   bar    6.00     3.00
foo   bar2   4.50     5.00

  3. Select fields/columns (cut)

- By index: `csvtk cut -f 1,2`
- By names: `csvtk cut -f first_name,username`
- **Unselect**: `csvtk cut -f -1,-2` or `csvtk cut -f -first_name`
- **Fuzzy fields**: `csvtk cut -F -f "*_name,username"`
- Field ranges: `csvtk cut -f 2-4` for column 2,3,4 or `csvtk cut -f -3--1` for discarding column 1,2,3
- All fields: `csvtk cut -F -f "*"`
  1. Search by selected fields (grep) (matched parts will be highlighted as red)
- By exactly matching: `csvtk grep -f first_name -p Robert -p Rob`
- By regular expression: `csvtk grep -f first_name -r -p Rob`
- By pattern list: `csvtk grep -f first_name -P name_list.txt`
- Remore rows containing missing data (NA): `csvtk grep -F -f "*" -r -p "^$" -v `
  1. Rename column names (rename and rename2)
- Setting new names: `csvtk rename -f A,B -n a,b` or `csvtk rename -f 1-3 -n a,b,c`
- Replacing with original names by regular express: `cat ../testdata/c.csv | ./csvtk rename2 -F -f "*" -p "(.*)" -r 'prefix_$1'` for adding prefix to all column names.
  1. Edit data with regular expression (replace)
- Remove Chinese charactors:  `csvtk replace -F -f "*_name" -p "\p{Han}+" -r ""`
  1. Create new column from selected fields by regular expression (mutate)
- In default, copy a column: `csvtk mutate -f id `
- Extract prefix of data as group name (get "A" from "A.1" as group name):
  `csvtk mutate -f sample -n group -p "^(.+?)\."`
  1. Sort by multiple keys (sort)
- By single column : `csvtk sort -k 1` or `csvtk sort -k last_name`
- By multiple columns: `csvtk sort -k 1,2` or `csvtk sort -k 1 -k 2` or `csvtk sort -k last_name,age`
- Sort by number: `csvtk sort -k 1:n` or  `csvtk sort -k 1:nr` for reverse number
- Complex sort: `csvtk sort -k region -k age:n -k id:nr`
- In natural order: `csvtk sort -k chr:N`
  1. Join multiple files by keys (join)
- All files have same key column: `csvtk join -f id file1.csv file2.csv`
- Files have different key columns: `csvtk join -f "username;username;name" names.csv phone.csv adress.csv -k`
  1. Filter by numbers (filter)
- Single field: `csvtk filter -f "id>0"`
- **Multiple fields**: `csvtk filter -f "1-3>0"`
- Using `--any` to print record if any of the field satisfy the condition: `csvtk filter -f "1-3>0" --any`
- **fuzzy fields**: `csvtk filter -F -f "A*!=0"`
  1. Filter rows by awk-like arithmetic/string expressions (filter2)
- Using field index: `csvtk filter2 -f '$3>0'`
- Using column names: `csvtk filter2 -f '$id > 0'`
- Both arithmetic and string expressions: `csvtk filter2 -f '$id > 3 || $username=="ken"'`
- More complicated: `csvtk filter2 -H -t -f '$1 > 2 && $2 % 2 == 0'`

  1. Ploting

    • plot histogram with data of the second column:

      csvtk -t plot hist testdata/grouped_data.tsv.gz -f 2 | display

    [histogram.png](testdata/figures/histogram.png)

- plot boxplot with data of the "GC Content" (third) column,
group information is the "Group" column.

        csvtk -t plot box testdata/grouped_data.tsv.gz -g "Group" \
            -f "GC Content" --width 3 | display

  ![boxplot.png](testdata/figures/boxplot.png)

-  plot horiz boxplot with data of the "Length" (second) column,
group information is the "Group" column.

        csvtk -t plot box testdata/grouped_data.tsv.gz -g "Group" -f "Length"  \
            --height 3 --width 5 --horiz --title "Horiz box plot" | display

  ![boxplot2.png](testdata/figures/boxplot2.png)

- plot line plot with X-Y data

        csvtk -t plot line testdata/xy.tsv -x X -y Y -g Group | display

  ![lineplot.png](testdata/figures/lineplot.png)

- plot scatter plot with X-Y data

        csvtk -t plot line testdata/xy.tsv -x X -y Y -g Group --scatter | display

  ![scatter.png](testdata/figures/scatter.png)

Acknowledgements

We are grateful to Zhiluo Deng and Li Peng for suggesting features and reporting bugs.

Thanks Albert Vilella for features suggestion, which makes csvtk feature-rich。

Contact

Create an issue to report bugs, propose new functions or ask for help.

Or leave a comment.

License

MIT License


*Note that all licence references and agreements mentioned in the csvtk README section above are relevant to that project's source code only.