musduo opened a new issue #14929:
URL: https://github.com/apache/superset/issues/14929
How can I change viz.py to prevent it from showing null where there is no
data in the grouped bar graph.I want it to print 0 instead of the null value.
I think this is the part related to it
`
#pandas will throw away nulls when grouping/pivoting,
# so we substitute NULL_STRING for any nulls in the necessary columns
filled_cols = self.groupby + columns
df = df.copy()
df[filled_cols] = df[filled_cols].fillna(value=NULL_STRING)
`
I'm writing 0 instead of NULL_STRING, but that doesn't have any effect.
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