I’m a new user of Panel, and I have a bound function created with `pn.bind`

, like this:

```
magnitude = pnw.IntSlider(end=10, name='value', value=5, value_throttled=5)
cmap = pnw.RadioButtonGroup(name='cmap', value='viridis',
options=['viridis', 'plasma', 'inferno', 'magma', 'cividis'])
boundfn = pn.bind(random_imshow, magnitude=magnitude, sigma=3, colormap=cmap)
pane = pn.Row(pn.Column(magnitude, cmap), boundfn)
```

This provides a slider and a radio button group, and the `random_imshow`

function is called with the right arguments each time any of these inputs change.

I would like to run this `random_imshow`

function every second, updating the display, and using as parameters the latest values from the UI.

I thought that adding:

```
pn.state.add_periodic_callback(boundfn, period=1000)
```

would work, but it doesn’t seem to get called every second.

I naively assumed this would work, and am a bit stuck now, and am not sure where to go next.

Is there a way to get Panel to call this bound function every second, updating the screen? Or would I have to go deeper into Panel and try and link some of the underlying objects together somehow? I liked the simple way that `pn.bind`

worked, and was hoping it would easily extend to refreshing regularly.

A full Jupyter notebook with my example code is available at https://nbviewer.jupyter.org/gist/robintw/f42abfe296795e253fb9abcd2215b4dd - and that includes the definition of `random_imshow`

which is not shown here for brevity.

Thanks,

Robin