Holomap with Sankey plots not working correctly?

I’m trying to solve this SO-question:

So basically a sankey plot with selection dropdown is needed where you can select year 2017 or 2018.

So I tried the following code below, and I thought this would give the dropdown on year, but it didn’t. It only gave me the 2017 plot. Is the expected behavior or a (known) bug? Is there a workaround possible?

import pandas as pd
import numpy as np
import holoviews as hv

df = pd.DataFrame({
    'from': ["a", "b", "c", "a", "b", "c"],
    'to': ["d", "d", "e", "e", "e", "d"],
    'number': [10, 2, 1, 8, 2, 2],
    'year': [2018, 2018, 2018, 2017, 2017, 2017],

sankey_dict = {
    year: hv.Sankey(df[df.year == year].loc[:, ['from', 'to', 'number']]) 
    for year in df.year.unique()

holo = hv.HoloMap(sankey_dict, kdims='year')

I’d need more information about what version you are using. When I display this I get the following:

which is presumably what you were expecting.

Edit: I suspect the Sankey plot is covering the widget. Starting in the next release that can no longer happen, which is why I’m not seeing that behavior.

You’re right. It is actually working.

I just tried it now on my Windows at work with my larger screen and I saw the slider.
Yesterday evening, I was using my small 13 inch mac, didn’t see the slider. Maybe the plot was covering the slider. Or it was just late :slight_smile: