How to plot a 2d array with bokeh?

Question

Can someone give a short/simple example of how to plot a 2D-array with bokeh? Something similar to imshow() in matplotlib. I did not find a good examples given in the bokeh gallery.

a = np.array([[1,2], [3, 4]])
imshow(a)  # but with bokeh

That is what I am asking about. Code. I don't know any code that does that. That is the point. — Soerendip
– Soerendip, Commented May 18, 2018 at 23:37
Not sure why this was downvoted. Is bokeh.pydata.org/en/latest/docs/gallery/image.html what you want? — user3002273
– user3002273, Commented May 18, 2018 at 23:48

Soerendip · Accepted Answer · 2018-05-19 00:21:50Z

9

Thanks Adian! That was a good direction. Here is a minimal example.

import numpy as np
from bokeh.plotting import figure, show

a = np.array([[1,2], [3, 4]])
p = figure(x_range=(0, 2), y_range=(0, 2))

# must give a vector of image data for image parameter
p.image(image=[a], x=0, y=0, dw=2, dh=2, palette="Spectral11")

show(p)

answered May 19, 2018 at 0:21

Soerendip

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