Tap Stream Not working with NdOverlay

hvPlot
, , ,
2

HA! I figured out a hack.

import hvplot.xarray # v:0.10.0
import panel as pn # v:1.4.2
import cartopy.crs as ccrs # v:0.22.0
import param # v:2.1.0 
import xarray as xr # v:2023.9.0
from holoviews import DynamicMap # v:1.18.1
from holoviews.streams import Tap
from geoviews.feature import borders, coastline, lakes, ocean, rivers

pn.extension()

class HvPlotQuadmeshStreams(param.Parameterized):
    def tap_callback(self, x, y):
        return self.ds.air.sel(lon=x,lat=y, method='nearest').hvplot.line(x='time')
        
    def __init__(self, **params):
        self.ds = xr.tutorial.open_dataset('air_temperature').load()

        self.map_plot = self.ds.hvplot.quadmesh(rasterize=True)
        self.tap_stream = Tap(source=self.map_plot, x=-75, y=45)
        self.dynamic_map = DynamicMap(self.tap_callback, streams=[self.tap_stream])

        super().__init__(**params)
        
    def view(self):
        return pn.Column((borders * coastline) * self.map_plot, self.dynamic_map)

app = HvPlotQuadmeshStreams()

pn.panel(app.view)

Overlaying after setting the stream (return statement of view) seems to do the trick! I would say that it should have worked either way but at least I can advance on my projects now :slight_smile: