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How to increase number of color categories? #1417

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ahuang11 opened this issue Sep 19, 2024 · 0 comments

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ahuang11 commented Sep 19, 2024

import hvplot.pandas
import datashader as ds
import holoviews as hv
import numpy as np

hv.extension("bokeh")

tst = pd.DataFrame({
    "lon": np.random.randn(257),
    "lat": np.random.randn(257),
    "cat": np.random.randn(257).astype(str),
})
tst.hvplot.paths("lon", "lat", datashade=True, aggregator=ds.count_cat("cat"))

Crashes with

WARNING:param.dynamic_operation: Callable raised "ValueError('Insufficient colors provided (256) for the categorical fields available (257)')".
Invoked as dynamic_operation(height=300, scale=1.0, width=700, x_range=None, y_range=None)

ahuang11 added TRIAGE and removed TRIAGE labels

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