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heatmap plot empty #3703

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fedario opened this issue May 12, 2019 · 1 comment

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@fedario
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commented May 12, 2019

When I try to plot a simple heatmap (inspired by this) like the following I get an empty heatmap.

import holoviews as hv
hv.extension('bokeh')

data = [(chr(65+i), chr(97+j),  i*j) for i in range(5) for j in range(5) if i!=j]
hv.HeatMap(data).sort()

This issue also seems to affect the example in the documentation. In the reference gallery overview the heatmap image is empty like the one in my example above.

Bonus weirdness

When I download the notebook from the example I get this error:

File Load Error for HeatMap.ipynb
NetworkError when attempting to fetch resource.

I can't even delete the file from within jupyter-lab. I never had this issue with any other file before.

pyviz package versions

colorcet                  2.0.1                      py_0    pyviz
datashader                0.7.0                      py_0    pyviz
holoviews                 1.12.2                     py_0    pyviz
hvplot                    0.4.0                      py_0    pyviz
panel                     0.5.1                      py_0    pyviz
param                     1.9.0                      py_0    pyviz
pyct                      0.4.6                      py_0    pyviz
pyct-core                 0.4.6                      py_0    pyviz
pyviz_comms               0.7.2                      py_0    pyviz
@philippjfr

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commented May 12, 2019

Seems to be an issue with the size of the plot, which appears to be responsive by default for some reason and then collapses to zero height.

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