Hi,
On this page, the radar charts created with plotly graph objects (go.Scatterpolar) do not close — the line connecting the last point back to the first is missing.
Clearly not on you; this is so typical that the official Plotly documentation does it.
The usual line_close=True method from Plotly Express does not work with Graph Objects. And fig.update_traces(connectgaps=True) does not seem to work with radar coordinates.
A possible workaround (mentioned here) is to manually close the loop by repeating the first point in r and theta:
r = df["value"].tolist() + [df["value"][0]]
theta = df["name"].tolist() + [df["name"][0]]
or
r = [*df["value"], df["value"].iloc[0]]
theta = [*df["name"], df["name"].iloc[0]]
It’s stupid, verbose and inelegant, but (on the plus size) it works.
I haven’t made a PR because this might be too niche to implement (after all, the same behavior exists on the official Plotly site), but I can submit one if needed.
PS: I'm bad at it. I might not be aware of a cleaner solution, so there could be a better way.
Hi,
On this page, the radar charts created with plotly graph objects (go.Scatterpolar) do not close — the line connecting the last point back to the first is missing.
Clearly not on you; this is so typical that the official Plotly documentation does it.
The usual
line_close=Truemethod from Plotly Express does not work with Graph Objects. Andfig.update_traces(connectgaps=True)does not seem to work with radar coordinates.A possible workaround (mentioned here) is to manually close the loop by repeating the first point in r and theta:
or
It’s stupid, verbose and inelegant, but (on the plus size) it works.
I haven’t made a PR because this might be too niche to implement (after all, the same behavior exists on the official Plotly site), but I can submit one if needed.
PS: I'm bad at it. I might not be aware of a cleaner solution, so there could be a better way.