diagram
Text mode diagrams using UTF-8 characters and fancy colors (using Python).
Features
- Axial graphs
- Horizontal and vertical bar graphs
- Supports both 3 bit (16 color) and 8 bit (256 color) mode colors with various pre-defined palettes (see below)
- UTF-8 text graphics
Installation
System requirements for Fedora Core 24:
dnf install ncurses-devel ncurses-compat-libs
It's recommended to use pip to install/update.
To install:
$ sudo pip install diagram
To update:
$ sudo pip install -U diagram
To install from github:
$ sudo pip install git+https://github.com/tehmaze/diagram.git
Examples
Pictures say more than a thousand words.
Axis graph
Horizontal bar graph
Drawing characters used:
β β β β β β β β
Vertical bar graph
Drawing characters used:
β β β β β
β β β
Usage
Use diagram --help for documentation:
usage: diagram [-h] [-G] [-H] [-V] [-a] [-A] [-c] [-C] [-l] [-L]
[-f function] [-p palette] [-x characters] [-y characters]
[-r] [-b] [-s SLEEP] [-i file] [-o file] [-e ENCODING]
optional arguments:
-h, --help show this help message and exit
optional drawing mode:
-G, --graph axis drawing mode (default)
-H, --horizontal-bars
horizontal drawing mode
-V, --vertical-bars vertical drawing mode
optional drawing arguments:
-a, --axis draw axis (default: yes)
-A, --no-axis don't draw axis
-c, --color use colors (default: yes)
-C, --no-color don't use colors
-l, --legend draw y-axis legend (default: yes)
-L, --no-legend don't draw y-axis legend
-f function, --function function
curve manipulation function, use "help" for a list
-p palette, --palette palette
palette name, use "help" for a list
-x characters, --width characters
drawing width (default: auto)
-y characters, --height characters
drawing height (default: auto)
-r, --reverse reverse draw graph
optional input and output arguments:
-b, --batch batch mode (default: no)
-k, --keys input are key-value pairs (default: no) (1)
-s SLEEP, --sleep SLEEP
batch poll sleep time (default: none)
-i file, --input file
input file (default: stdin)
-o file, --output file
output file (default: stdout)
-e ENCODING, --encoding ENCODING
output encoding (default: auto)
(1): only works for the horizontal bar graph, the first argument is the key
and the second value is the data point.
--function ...
The parameter can be just the function name or the function name with arguments, for example:
diagram -f log
or, with an argument:
diagram -f log:e
log
Symmetrical logarithmic scale.
smooth
Smooth (and optionally differentiate) data with a Savitzky-Golay filter.
--palette ...
default / spectrum
grey
red
green
blue
Library Usage
from diagram import DGWrapper
gram = DGWrapper(data=[points, values])
gram.show()