nbagg backend API incomplete?

[michaelaye]

I'm having a problem with some of seaborn's plots not showing the x/y coordinates for the nbagg backend, see here: mwaskom/seaborn#495

The author of seaborn claims this to be a MPL problem. Will you now kick me back to him? ;)

[mdboom]

Doesn't seem to be nbagg-specific. Same issue on GtkAgg and Qt4Agg -- that the coordinates displayed are x= y=. Or is the issue something else?

[michaelaye]

I don't know which qt I get when I do %matplotlib qt but the coordinates are shown fine here for me.

Using this example code from seaborn:

%matplotlib qt
import seaborn as sns
sns.set()

flights_long = sns.load_dataset("flights")
flights = flights_long.pivot("month", "year", "passengers")
flights = flights.reindex(flights_long.iloc[:12].month)

sns.heatmap(flights, annot=True, fmt="d")

and just leaving out the sns related plotting (but still importing sns just for the dataset):

%matplotlib qt
import seaborn as sns

flights_long = sns.load_dataset("flights")
flights = flights_long.pivot("month", "year", "passengers")
flights = flights.reindex(flights_long.iloc[:12].month)

plt.imshow(flights.values)

I get a QT window that is able to show the x/y coordinates.

while above code using seaborn's heatmap does not show the x/y-coordinates.

[tacaswell]

The reason sns.heatmap does not show the mouse over is due to https://github.com/mwaskom/seaborn/blob/master/seaborn/matrix.py#L172. This is a seaborn bug, not a mpl bug.

More detail at #4302 and mwaskom/seaborn#495

[mwaskom]

Not to send pissy issues shooting back and forth at each other, but calling the use of ax.set_xticklabels(xticklabels) a "bug" perplexes me.

[michaelaye]

I don't think unprofessional language is helping anyone, so I unsubscribed from this.