cmasher:redshift#

The redshift colormap is a visual representation of the (mostly) astronomical phenomenon with the same name, where electromagnetic radiation (such as light) undergoes an increase in wavelength.

collection	category	license	authors	source
cmasher	Diverging	BSD-3-Clause	Ellert van der Velden	https://github.com/1313e/CMasher

cmapmatplotlibplotlynapariCSSMore...

from cmap import Colormap

cm = Colormap("cmasher:redshift")  # case insensitive

import matplotlib.pyplot as plt
from cmap import Colormap

plt.imshow(data, cmap=Colormap("cmasher:redshift").to_mpl())

import plotly.express as px
from cmap import Colormap

px.imshow(data, color_continuous_scale=Colormap("cmasher:redshift").to_plotly())

import napari
from cmap import Colormap

napari.imshow(data, colormap=Colormap("cmasher:redshift").to_napari())
napari.run()

background: #94F1F3;
background: linear-gradient(90deg, #94F1F3 0%, #7DDFED 3.22581%, #65CDE8 6.45161%, #4DBBE4 9.67742%, #34AAE2 12.9032%, #1D98E0 16.129%, #1B85DD 19.3548%, #2F71D1 22.5806%, #3C60B6 25.8065%, #3D5297 29.0323%, #384579 32.2581%, #30385D 35.4839%, #272B44 38.7097%, #1B1D2D 41.9355%, #0E0F17 45.1613%, #020203 48.3871%, #030202 51.6129%, #180C0A 54.8387%, #2D1713 58.0645%, #43201B 61.2903%, #592823 64.5161%, #712E2A 67.7419%, #893331 70.9677%, #A2363B 74.1935%, #BA3A4C 77.4194%, #CA4968 80.6452%, #D45E83 83.871%, #DD739D 87.0968%, #E589B6 90.3226%, #ECA0CE 93.5484%, #F3B6E5 96.7742%, #FCCDFC 100%);

altairbokehvispypygfxpyqtgraphEarth Engine

import altair as alt
from cmap import Colormap

# df: a DataFrame with columns x, y and value
alt.Chart(df).mark_rect().encode(
    x="x:O",
    y="y:O",
    color=alt.Color(
        "value:Q", scale=alt.Scale(range=Colormap("cmasher:redshift").to_altair())
    ),
)

from bokeh.plotting import figure, show
from cmap import Colormap

p = figure()
p.image(
    image=[data], x=0, y=0, dw=1, dh=1,
    color_mapper=Colormap("cmasher:redshift").to_bokeh(),
)
show(p)

from vispy import app, scene
from cmap import Colormap

canvas = scene.SceneCanvas(show=True)
view = canvas.central_widget.add_view()
scene.visuals.Image(data, cmap=Colormap("cmasher:redshift").to_vispy(), parent=view.scene)
view.camera = scene.PanZoomCamera(aspect=1)
view.camera.set_range()
app.run()

import pygfx as gfx
from cmap import Colormap

image = gfx.Image(
    gfx.Geometry(grid=gfx.Texture(data, dim=2)),
    gfx.ImageBasicMaterial(
        clim=(data.min(), data.max()), map=Colormap("cmasher:redshift").to_pygfx()
    ),
)
gfx.show(image)

import pyqtgraph as pg
from cmap import Colormap

view = pg.image(data)
view.setColorMap(Colormap("cmasher:redshift").to_pyqtgraph())
pg.exec()

import ee
from cmap import Colormap

ee.Initialize(project="my-project")  # your Google Cloud project
elevation = ee.Image("CGIAR/SRTM90_V4")
image = elevation.visualize(
    min=0, max=3000, palette=Colormap("cmasher:redshift").to_gee()
)

Perceptual lightness#

Lightness (J′) measured in CAM02 Uniform Color Space (CAM02-UCS)

cmasher:redshift#

Perceptual lightness#

RGB components#

Hue & saturation#