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jupyter
jupytext kernelspec language_info plotly
notebook_metadata_filter text_representation
all
extension format_name format_version jupytext_version
.md
markdown
1.1
1.1.1
display_name language name
Python 3
python
python3
codemirror_mode file_extension mimetype name nbconvert_exporter pygments_lexer version
name version
ipython
3
.py
text/x-python
python
python
ipython3
3.6.7
description display_as language layout name order page_type permalink thumbnail
How to make Annotated Heatmaps in Python with Plotly.
scientific
python
base
Annotated Heatmaps
4
u-guide
python/annotated_heatmap/
thumbnail/ann_heat.jpg

Simple Annotated Heatmap

For more examples with Heatmaps, see this page.

import plotly.figure_factory as ff

z = [[.1, .3, .5, .7, .9],
     [1, .8, .6, .4, .2],
     [.2, 0, .5, .7, .9],
     [.9, .8, .4, .2, 0],
     [.3, .4, .5, .7, 1]]

fig = ff.create_annotated_heatmap(z)
fig.show()

Defined Colorscale

import plotly.figure_factory as ff

z = [[.1, .3, .5, .7],
     [1, .8, .6, .4],
     [.6, .4, .2, .0],
     [.9, .7, .5, .3]]

fig = ff.create_annotated_heatmap(z, colorscale='Viridis')
fig.show()

Custom Colorscale

import plotly.figure_factory as ff

z = [[.1, .3, .5, .7],
     [1.0, .8, .6, .4],
     [.6, .4, .2, 0.0],
     [.9, .7, .5, .3]]

colorscale = [[0, 'navy'], [1, 'plum']]
font_colors = ['white', 'black']
fig = ff.create_annotated_heatmap(z, colorscale=colorscale, font_colors=font_colors)
fig.show()

Custom Text and X & Y Labels

set annotation_text to a matrix with the same dimmensions as z

import plotly.figure_factory as ff

z = [[.1, .3, .5],
     [1.0, .8, .6],
     [.6, .4, .2]]

x = ['Team A', 'Team B', 'Team C']
y = ['Game Three', 'Game Two', 'Game One']

z_text = [['Win', 'Lose', 'Win'],
          ['Lose', 'Lose', 'Win'],
          ['Win', 'Win', 'Lose']]

fig = ff.create_annotated_heatmap(z, x=x, y=y, annotation_text=z_text, colorscale='Viridis')
fig.show()

Annotated Heatmap with numpy

import plotly.figure_factory as ff
import numpy as np
np.random.seed(1)

z = np.random.randn(20, 20)
z_text = np.around(z, decimals=2) # Only show rounded value (full value on hover)

fig = ff.create_annotated_heatmap(z, annotation_text=z_text, colorscale='Greys',
                                  hoverinfo='z')

# Make text size smaller
for i in range(len(fig.layout.annotations)):
    fig.layout.annotations[i].font.size = 8

fig.show()

Custom Hovertext

# Add Periodic Table Data
symbol = [['H', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'He'],
         ['Li', 'Be', '', '', '', '', '', '', '', '', '', '', 'B', 'C', 'N', 'O', 'F', 'Ne'],
         ['Na', 'Mg', '', '', '', '', '', '', '', '', '', '', 'Al', 'Si', 'P', 'S', 'Cl', 'Ar'],
         ['K', 'Ca', 'Sc', 'Ti', 'V', 'Cr', 'Mn', 'Fe', 'Co', 'Ni', 'Cu', 'Zn', 'Ga', 'Ge', 'As', 'Se', 'Br', 'Kr'],
         ['Rb ', 'Sr', 'Y', 'Zr', 'Nb', 'Mo', 'Tc', 'Ru', 'Rh', 'Pd', 'Ag', 'Cd', 'In', 'Sn', 'Sb', 'Te', 'I', 'Xe' ],
         ['Cs', 'Ba', '', 'Hf', 'Ta', 'W', 'Re', 'Os', 'Ir', 'Pt', 'Au', 'Hg', 'Tl', 'Pb', 'Bi', 'Po', 'At', 'Rn' ],
         ['Fr', 'Ra', '', 'Rf', 'Db', 'Sg', 'Bh', 'Hs', 'Mt', 'Ds', 'Rg', 'Cn', 'Uut', 'Fl', 'Uup', 'Lv', 'Uus', 'Uuo'],
         ['', '', 'La', 'Ce', 'Pr', 'Nd', 'Pm', 'Sm', 'Eu', 'Gd', 'Tb', 'Dy', 'Ho', 'Er', 'Tm', 'Yb', 'Lu', ''],
         ['', '', 'Ac', 'Th', 'Pa', 'U', 'Np', 'Pu', 'Am', 'Cm', 'Bk', 'Cf', 'Es', 'Fm', 'Md', 'No', 'Lr', '' ],
         ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', ''],
         ['', 'Alkali Metal', '', '', 'Transition Metal', '', '', 'Actinide', '', '', 'Semimetal', '', '', 'Halogen', '', '', '', ''],
         ['', 'Alkaline Metal', '', '', 'Lanthanide', '', '', 'Basic Metal', '', '', 'Nonmetal', '', '', 'Noble Gas', '', '', '', '']]

element = [['Hydrogen', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'Helium'],
           ['Lithium', 'Beryllium', '', '', '', '', '', '', '', '', '', '', 'Boron', 'Carbon', 'Nitrogen', 'Oxygen', 'Fluorine', 'Neon'],
           ['Sodium', 'Magnesium', '', '', '', '', '', '', '', '', '', '', 'Aluminium', 'Silicon', 'Phosphorus', 'Sulfur', 'Chlorine', ' Argon'],
           ['Potassium', ' Calcium', ' Scandium', ' Titanium', ' Vanadium', ' Chromium',  'Manganese', 'Iron', 'Cobalt', 'Nickel', 'Copper', 'Zinc', 'Gallium', 'Germanium', 'Arsenic', 'Selenium', 'Bromine', 'Krypton'],
           ['Rubidium', 'Strontium', 'Yttrium', 'Zirconium', 'Niobium', 'Molybdenum', 'Technetium', 'Ruthenium', 'Rhodium', 'Palladium', 'Silver', 'Cadmium', 'Indium', 'Tin', 'Antimony', 'Tellurium', 'Iodine', 'Xenon'],
           [' Cesium', ' Barium', '',  'Hafnium', 'Tantalum', 'Tungsten', 'Rhenium', 'Osmium', 'Iridium', 'Platinum', 'Gold', 'Mercury', 'Thallium', 'Lead', 'Bismuth', 'Polonium', 'Astatine', 'Radon'],
           [' Francium', ' Radium', '', 'Rutherfordium','Dubnium','Seaborgium','Bohrium','Hassium','Meitnerium','Darmstadtium','Roentgenium','Copernicium','Ununtrium','Ununquadium','Ununpentium','Ununhexium','Ununseptium','Ununoctium'],
           ['', '',  'Lanthanum', 'Cerium', 'Praseodymium', 'Neodymium', 'Promethium', 'Samarium', 'Europium', 'Gadolinium', 'Terbium', 'Dysprosium', 'Holmium', 'Erbium', 'Thulium', 'Ytterbium', 'Lutetium', ''],
           ['', '', 'Actinium', 'Thorium', 'Protactinium', 'Uranium', 'Neptunium', 'Plutonium', 'Americium', 'Curium', 'Berkelium', 'Californium', 'Einsteinium','Fermium' ,'Mendelevium', 'Nobelium', 'Lawrencium', '' ],
           ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', ''],
           ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', ''],
           ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '']]

atomic_mass = [[ 1.00794, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0,  4.002602],
     [ 6.941, 9.012182, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0,  10.811, 12.0107, 14.0067, 15.9994, 18.9984032, 20.1797],
     [ 22.98976928, 24.3050, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0,  26.9815386, 28.0855, 30.973762, 32.065, 35.453, 39.948],
     [ 39.0983, 40.078, 44.955912, 47.867, 50.9415, 51.9961, 54.938045, 55.845, 58.933195, 58.6934, 63.546, 65.38, 69.723, 72.64, 74.92160, 78.96, 79.904, 83.798],
     [ 85.4678, 87.62, 88.90585, 91.224, 92.90638, 95.96, 98, 101.07, 102.90550, 106.42, 107.8682, 112.411, 114.818, 118.710, 121.760, 127.60, 126.90447, 131.293],
     [ 132.9054519, 137.327, .0, 178.49, 180.94788, 183.84, 186.207, 190.23, 192.217, 195.084, 196.966569, 200.59, 204.3833, 207.2, 208.98040, 209, 210, 222],
     [223, 226, .0, 267, 268, 271, 272, 270, 276, 281, 280, 285, 284, 289, 288, 293, 'unknown', 294],
     [.0, .0, 138.90547, 140.116, 140.90765, 144.242, 145, 150.36, 151.964, 157.25, 158.92535, 162.500, 164.93032, 167.259, 168.93421, 173.054, 174.9668, .0],
     [.0, .0, 227, 232.03806, 231.03588, 238.02891, 237, 244, 243, 247, 247, 251, 252, 257, 258, 259, 262, .0],
     [.0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0],
     [.0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0],
     [.0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0]]

z = [[.8, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, 1.],
     [.1, .2, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .7, .8, .8, .8, .9, 1.],
     [.1, .2, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .6, .7, .8, .8, .9, 1],
     [.1, .2, .3, .3, .3, .3, .3, .3, .3, .3, .3, .3, .6, .7, .8, .8, .9, 1.],
     [.1, .2, .3, .3, .3, .3, .3, .3, .3, .3, .3, .3, .6, .6, .7, .7, .9, 1.],
     [.1, .2, .4, .3, .3, .3, .3, .3, .3, .3, .3, .3, .6, .6, .6, .7, .9, 1.],
     [.1, .2, .5, .3, .3, .3, .3, .3, .3, .3, .3, .3, .6, .6, .6, .6, .9, 1.],
     [.0, .0, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .4, .0],
     [.0, .0, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .0],
     [.0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0, .0],
     [.1, .1, .1, .3, .3, .3, .5, .5, .5, .7, .7, .7, .9, .9, .9, .0, .0, .0],
     [.2, .2, .2, .4, .4, .4, .6, .6, .6, .8, .8, .8, 1., 1., 1., .0, .0, .0]]

# Display element name and atomic mass on hover
hover=[]
for x in range(len(symbol)):
    hover.append([i + '<br>' + 'Atomic Mass: ' + str(j)
                      for i, j in zip(element[x], atomic_mass[x])])

# Invert Matrices
symbol = symbol[::-1]
hover = hover[::-1]
z = z[::-1]

# Set Colorscale
colorscale=[[0.0, 'rgb(255,255,255)'], [.2, 'rgb(255, 255, 153)'],
            [.4, 'rgb(153, 255, 204)'], [.6, 'rgb(179, 217, 255)'],
            [.8, 'rgb(240, 179, 255)'],[1.0, 'rgb(255, 77, 148)']]

# Make Annotated Heatmap
fig = ff.create_annotated_heatmap(z, annotation_text=symbol, text=hover,
                                 colorscale=colorscale, font_colors=['black'], hoverinfo='text')
fig.update_layout(title_text='Periodic Table')
fig.show()

Reference

For more info on Plotly heatmaps, see: https://plot.ly/python/reference/#heatmap.
For more info on using colorscales with Plotly see: https://plot.ly/python/heatmap-and-contour-colorscales/
For more info on annotated_heatmaps, see:

help(ff.create_annotated_heatmap)
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