Flexitext is a Python library that makes it easier to draw text with multiple styles in Matplotlib

Overview

PyPI - Version Build Status Code style: black codecov

Introduction

Flexitext is a Python library that makes it easier to draw text with multiple styles in Matplotlib. This library is inspired and influenced by the R package ggtext.

Installation

Flexitext requires a working Python interpreter (3.7+). This library can be installed using pip:

pip install flexitext

Alternatively, you can install the development version from GitHub:

pip install git+https://github.com/tomicapretto/flexitext.git

Flexitext only requires Matplotlib version 3.4 or higher.

Overview

Albeit being inspired on ggtext, Flexitext does not use HTML, CSS, or Markdown to specify text styles. On the contrary, it implements a tag-based styling that looks similar to HTML tags, but is not exactly like HTML. These formatted strings consist of three components:

  • An opening tag that defines the styles to apply.
  • The text to be styled.
  • A closing tag, indicating the extent to which the styles in the opening tag apply.

Let's see an example:

This is blue text and this is regular text" ">
"
    
     This is blue text and this is regular text"
    
  • is the opening tag. Styles are key-value pairs separated by :. Multiple styles are separated by commas.
  • This is blue text is the text block. This text is going to be drawn using a font size of 16 and blue color.
  • is the closing tag. Only the text within the opening and the closing tags is formatted.

And finally we have and this is regular text. This is going to be drawn using the default style because it is not contained within any formatting tags.

Examples

The easiest way to use flexitext is through the flexitext function.

import matplotlib as mpl
import matplotlib.pyplot as plt

from flexitext import flexitext

mpl.rcParams['figure.facecolor'] = 'w'
fig, ax = plt.subplots(figsize=(9, 6))

text = "Normal text"
ax.text(0.5, 0.7, text, size=24, ha="center")

text = "
   
    Bold text"
   
flexitext(0.5, 0.6, text, ha="center")

text = "
   
    Italic text"
   
flexitext(0.5, 0.5, text, ha="center")

text = "
   
    Bold and 
    
     italic too!"
    
   
flexitext(0.5, 0.4, text, ha="center");

png

Styles can be nested

It is much easier now" flexitext(0.5, 0.6, text, ha="center"); ">
fig, ax = plt.subplots(figsize=(9, 6))

text = "
      
       It is much 
       
        easier 
        
         now"
        
       
      
flexitext(0.5, 0.6, text, ha="center");

png

A more convoluted example:

You can write using\n" " multiple formats,\nand linebreaks\n\n" " also bold text\n\n" " and why not italics too" ) fig, ax = plt.subplots(figsize=(9, 6)) flexitext(0.5, 0.5, text, ha="center", ma="center"); ">
text = (
    "
         
          You can write using
          \n"
         
    "
         
          multiple formats,
          \nand linebreaks
          \n
          \n"
         
    "
         
          also 
          
           bold text
           \n
           \n"
          
         
    "
         
          and why not 
          
           italics too"
          
         
)

fig, ax = plt.subplots(figsize=(9, 6))
flexitext(0.5, 0.5, text, ha="center", ma="center");

png

Use the figure fraction coordinates to write a formatted title.

A great chart showing\n" " the values for the " " blues and the reds" ) flexitext(0.025, 0.8, text, va="bottom", xycoords="figure fraction"); ">
fig, ax = plt.subplots(figsize=(9, 6))
fig.subplots_adjust(top=0.8, left=0.025)

x = [1, 2, 3]
y_blue = [2, 2.7, 4.5]
y_red = [1, 3, 2.5]


ax.scatter(x, y_blue, color="royalblue", s=120)
ax.scatter(x, y_red, color="crimson", s=120)

# Add flexitext
text = (
    "
        
         
          A 
          
           great chart showing
           \n"
          
         
        
    "
        
         the values for the "
        
    "
        
         blues and the 
         
          reds"
         
        
)
flexitext(0.025, 0.8, text, va="bottom", xycoords="figure fraction");

png

Notes

Flexitext only supports the following styles

  • alpha
  • backgroundcolor
  • color
  • family
  • name
  • size
  • style
  • weight

See Matplotlib's documentation for more information about their meaning and available values.

Flexitext logo is created with Flexitext and Matplotlib (see here).

Related work

  • highlight_text: Flexitext and highlight_text have similar goals. This library, highlight_text, allows you to customize more aspects of the highlighted text, such as the bounding box of the text or the border of the text with path effects. On the other hand, it requires you to pass a styles as a separated list of dictionaries instead of within the text.
Comments
  • Added Framework::Matplotlib to setup.cfg

    Added Framework::Matplotlib to setup.cfg

    Was having trouble finding this package, couldn't remember the name. Figure this would have helped me and make it slightly more discoverable. Also, please consider adding this package to https://matplotlib.org/mpl-third-party/

    opened by story645 6
  • About flexitext parameter

    About flexitext parameter "ha" and "va"

    Hello author, the ha and va parameters in the flexitext library do not seem to be consistent with those in ax.text. Set ha='center' in ax.text, the text of different lines will be aligned in the center, but this parameter seems to be invalid in flexitext (The alignment result is not quite consistent with the text). Setting ha='center' in flexitext is still left-aligned? The following is my code:

    `

    fig.subplots_adjust(top=0.8, left=0.025)
    x = [1, 2, 3]
    y_blue = [2, 2.7, 4.5]
    y_red = [1, 3, 2.5]
    ax.scatter(x, y_blue, color="royalblue", s=120)
    ax.scatter(x, y_red, color="crimson", s=120)
    # Add flexitext
    text = (
        "<name:Montserrat><size:24>A <weight:bold>great chart</> showing</>\n"
        "<size:18>the values for the "
        "<color:royalblue, weight:bold>blues</> and the <color:crimson, weight:bold>reds</></></>"
    )
    flexitext(0.5, 0.5, text, va="center", ha='center', ax=ax); #xycoords="figure fraction"
    ax.text(0.5, 0.2, text, va="center", ha='center',transform=ax.transAxes)
    plt.show()
    

    `

    image Is there a parameter in flexitext that can horizontally align the text of different lines in the center (even if the text size is inconsistent)?

    Thank you.

    opened by JiWenzheng 4
  • plt.subplots?

    plt.subplots?

    Hi, I want to use Flexitext to draw the text of subplots, but I find that parameter transform = axes. TransAxes is not supported. Is it possible to specify coordinate system in the future?

    opened by JiWenzheng 2
  • Several improvements and fixes

    Several improvements and fixes

    • Modify dev requirements and sort them alphabetically.
    • Add pyproject.toml where we set the length of the black formatter.
    • Flexitext now parses floats like 2. as 2.0. Previously it tried to parse two different numbers, resulting in an error.
    • Increase coverage to 100%.
    • Added changelog.
    opened by tomicapretto 1
  • Incompatibility with `constrained` layout?

    Incompatibility with `constrained` layout?

    I think I found a bug when using Matplotlib's constrained layout and flexitext. In this case, flexitext makes the layout very inconsistent if the window is resized, and different from what is expected. Here's some example code:

    import matplotlib.pyplot as plt
    from flexitext import flexitext
    
    fig, ax = plt.subplots(1, 2, figsize=(12, 6), layout="constrained")
    
    text1 = "<size:42, name:Carlito>Some<color:#11557c, weight:bold> text</></>"
    text2 = "<size:36, name:Lato, color:royalblue><weight:bold>Here</> too</>"
    
    flexitext(0.5, 0.5, text1, ha="center", ax=ax[0])
    flexitext(0.5, 0.5, text2, ha="center", ax=ax[1])
    
    fig.set_facecolor("w")
    # fig.savefig("example.png", dpi=300)
    plt.show()
    

    Here is a screenshot of the result: Screenshot from 2022-11-08 14-34-27

    After maximizing the window, and going back to its original size, the layout has changed: Screenshot from 2022-11-08 14-34-36

    Maximizing again, and going back to the original size: Screenshot from 2022-11-08 14-34-40

    Note that uncommenting fig.savefig("example.png", dpi=300) triggers a canvas draw and improves the layout for the given window size, but it doesn't seem to be what the layout would be without the flexitext.

    Expected layout: Screenshot from 2022-11-08 14-39-11

    Layout after a canvas draw: Screenshot from 2022-11-08 14-39-23

    What do you think?

    opened by guillaumedavidphd 7
Releases(v0.2.0)
  • v0.2.0(Mar 6, 2022)

    This release includes two relevant fixes/improvements:

    • Add mva argument to flexitext() which controls the vertical alignment of individual texts within the outer text box.
    • Improve backgroundcolor behavior. The backgroundcolor of one piece of text does not overlap other pieces of text by default now.
    Source code(tar.gz)
    Source code(zip)
  • v0.1.0(Sep 21, 2021)

View part of your screen in grayscale or simulated color vision deficiency.

monolens View part of your screen in grayscale or filtered to simulate color vision deficiency. Watch the demo on YouTube. Install with pip install mo

Hans Dembinski 31 Oct 11, 2022
Sentiment Analysis application created with Python and Dash, hosted at socialsentiment.net

Social Sentiment Dash Application Live-streaming sentiment analysis application created with Python and Dash, hosted at SocialSentiment.net. Dash Tuto

Harrison 456 Dec 25, 2022
A TileDB backend for xarray.

TileDB-xarray This library provides a backend engine to xarray using the TileDB Storage Engine. Example usage: import xarray as xr dataset = xr.open_d

TileDB, Inc. 14 Jun 02, 2021
A library for bridging Python and HTML/Javascript (via Svelte) for creating interactive visualizations

A library for bridging Python and HTML/Javascript (via Svelte) for creating interactive visualizations

Anthropic 98 Dec 27, 2022
Visualize and compare datasets, target values and associations, with one line of code.

In-depth EDA (target analysis, comparison, feature analysis, correlation) in two lines of code! Sweetviz is an open-source Python library that generat

Francois Bertrand 2.3k Jan 05, 2023
Plotly Dash Command Line Tools - Easily create and deploy Plotly Dash projects from templates

🛠️ dash-tools - Create and Deploy Plotly Dash Apps from Command Line | | | | | Create a templated multi-page Plotly Dash app with CLI in less than 7

Andrew Hossack 50 Dec 30, 2022
Investment and risk technologies maintained by Fortitudo Technologies.

Fortitudo Technologies Open Source This package allows you to freely explore open-source implementations of some of our fundamental technologies under

Fortitudo Technologies 11 Dec 14, 2022
D-Analyst : High Performance Visualization Tool

D-Analyst : High Performance Visualization Tool D-Analyst is a high performance data visualization built with python and based on OpenGL. It allows to

4 Apr 14, 2022
Joyplots in Python with matplotlib & pandas :chart_with_upwards_trend:

JoyPy JoyPy is a one-function Python package based on matplotlib + pandas with a single purpose: drawing joyplots (a.k.a. ridgeline plots). The code f

Leonardo Taccari 462 Jan 02, 2023
Sprint planner considering JIRA issues and google calendar meetings schedule.

Sprint planner Sprint planner is a Python script for planning your Jira tasks based on your calendar availability. Installation Use the package manage

Apptension 2 Dec 05, 2021
100 Days of Code The Complete Python Pro Bootcamp for 2022

100-Day-With-Python 100 Days of Code - The Complete Python Pro Bootcamp for 2022. In this course, I spend with python language over 100 days, and I up

Rajdip Das 8 Jun 22, 2022
Epagneul is a tool to visualize and investigate windows event logs

epagneul Epagneul is a tool to visualize and investigate windows event logs. Dep

jurelou 190 Dec 13, 2022
Backend app for visualizing CANedge log files in Grafana (directly from local disk or S3)

CANedge Grafana Backend - Visualize CAN/LIN Data in Dashboards This project enables easy dashboard visualization of log files from the CANedge CAN/LIN

13 Dec 15, 2022
Custom ROI in Computer Vision Applications

EasyROI Helper library for drawing ROI in Computer Vision Applications Table of Contents EasyROI Table of Contents About The Project Tech Stack File S

43 Dec 09, 2022
Visualization of the World Religion Data dataset by Correlates of War Project.

World Religion Data Visualization Visualization of the World Religion Data dataset by Correlates of War Project. Mostly personal project to famirializ

Emile Bangma 1 Oct 15, 2022
Sky attention heatmap of submissions to astrometry.net

astroheat Installation Requires Python 3.6+, Tested with Python 3.9.5 Install library dependencies pip install -r requirements.txt The program require

4 Jun 20, 2022
Declarative statistical visualization library for Python

Altair http://altair-viz.github.io Altair is a declarative statistical visualization library for Python. With Altair, you can spend more time understa

Altair 8k Jan 05, 2023
A curated list of awesome Dash (plotly) resources

Awesome Dash A curated list of awesome Dash (plotly) resources Dash is a productive Python framework for building web applications. Written on top of

Luke Singham 1.7k Dec 26, 2022
CLAHE Contrast Limited Adaptive Histogram Equalization

A simple code to process images using contrast limited adaptive histogram equalization. Image processing is becoming a major part of data processig.

Happy N. Monday 4 May 18, 2022
Extensible, parallel implementations of t-SNE

openTSNE openTSNE is a modular Python implementation of t-Distributed Stochasitc Neighbor Embedding (t-SNE) [1], a popular dimensionality-reduction al

Pavlin Poličar 1.1k Jan 03, 2023