tbar

Visualize values with ascii characters in terminal.

Synopsis and Options

usage: tbar [-h] [-r REGEXP] [-c COMMENT] [-s SEP] [-f FIELD] [-m MAX]
            [-l LENGTH] [-v]
            [filename]

Visualize values with ascii characters in terminal

positional arguments:
  filename              filename for input. If omitted read from stdin

optional arguments:
  -h, --help            show this help message and exit
  -r REGEXP, --regexp REGEXP
                        regular expression to extract key and value. When this
                        option is given, -s and -f options are ignored
  -c COMMENT_START, --comment COMMENT_START
                        string that leading commnent strings, defaults to "#"
  -s SEP, --sep SEP     separator of field
  -f NUM,NUM, --field NUM,NUM
                        numbers of field to use as key and value, default to
                        1,2
  -m MAX, --max MAX     value for max
  -l LENGTH, --length LENGTH
                        length of bars, defaults to 50
  -v, --vertical        print bars vertically

Usage Example

When the content of sample/a.txt is like:

# sample data
a 80
bcdef 40
ghi 20
jk 90

then the command

./bin/tbar sample/a.txt

will print bars as:

                                                        90.0
    a|********************************************      |
bcdef|**********************                            |
  ghi|***********                                       |
   jk|**************************************************|

When specifying the option --vertical, tbar prints bars vertically:

$ ./bin/tbar --vertical --length 10 sample/a.txt
90.0----
       *
       *
    *  *
    *  *
    *  *
    *  *
    ** *
    ** *
    ****
    ****
    ----
    abgj
     chk
     di
     e
     f

Specifying Field to Show

When extracting data from input line, there are two ways: cut-like options and regular expression. Using cut-like options is an easy way. For example, when input lines are

# sample data
a 80
bcdef 40
ghi 20
jk 90

then you can use the first field as key (name) and the second as value by specifying the options like

--sep " " --field 1,2

(Actually this options are set by default so you do not need these options for this simple case) If you want to deal with rather complicated input, you can use regular expression with symbolic groups instead. For example, specifying

--regexp '^(?P<key>[^ ]*) *(?P<value>[^ ]*)'

means the same thing as previous example by cut-like options.

License

This software is released under Public Domain. For more information, see 'LICENSE'.