基于 True/Fase 条件的散景线颜色

Question

I am trying to plot anomaly regions in Bokeh. The idea is to have a line that will use red color to show that those samples are anomalous ones.

Here is a sample reproducible code.

import numpy as np
import random

n=300
dat = pd.DataFrame()
dat['X_axis'] = np.linspace(start=0.0, stop=1000, num = n)
mean = 4
std = 1
dat['Y_axis']=np.random.normal(loc=mean, scale=std, size = n)
dat['anom'] = np.random.choice([False, True ], size = (n,), p= [0.90, 0.10])

I was able to implement the Box Annotation, and I am trying to do the same thing but this time, the same region will just have a red color for that portion of the line.

EDIT:

Following a comment/suggestion, I plotted those two lines as separate. However, Bokeh interpolates between values, instead of having a smooth transaction. Is there a way to drop interpolation, or at least minimize between it to two adjacent values?

EDIT 2:

I was able to break it into individual segments. However, now there are gaps between data samples that need to be eliminated. Any suggestion on how to do that?

Answer 1

You will have to split your data up and use either multiple calls to line or a single call to multi_line . It is not possible to specify different colors along different parts of a single line .