Custom Hovertool multi-level index

[pjvalla]

Have one question when using a custom hovertool on an aggregated set of points.

here are the column names of the points type (Notice the multi-level index):

<bound method Dataset.columns of :Points   [Discrete Freq,Spectral Slice]   (PowerdB)>

Using the built in hover works fine.

But I need to round the "Spectral Slice" values. I was going about it like this.

hover_water = HoverTool(tooltips=[('Discrete Freq', '@{Discrete Freq}'), ('Spectral Slice', '@{Spectral Slice}{int}'), ('Power dB', '@{PowerdB}')])
opts_hover = dict(tools=[hover_water], alpha=0, hover_alpha=0.2, fill_alpha=0)
extents = ret_extents(self.xrange, self.yrange)
agg = aggregate(self.points, width=width, height=height, dynamic=False, x_range=self.xrange, y_range=self.yrange,
                aggregator=ds.max('PowerdB'), x_sampling=self.step_size, y_sampling=1)
return hv.QuadMesh(agg, extents=extents).options(**opts_hover)

This returns an invalid hovertool.

Is there a way to reference the muli-level index?

[pjvalla]

Should I just attach the 2 files needed to run it?

[aditya08]

I had a similar problem and was able to perform rounding by using the format string '{0f}' (inplace of '{int}'.

In context: hover_water = HoverTool(tooltips=[('Discrete Freq', '@{Discrete Freq}'), ('Spectral Slice', '@{Spectral Slice}{0f}'), ('Power dB', '@{PowerdB}')])