ValueError:未指定类型的类编码字段
nlp 190
原文标题 :ValueError: class encoding field is specified without a type
dim_red = TruncatedSVD(n_components=2)
data_red = dim_red.fit_transform(tfidf)
scatter = alt.Chart(data_red,title="dimensionality reduction",height=400).mark_circle().encode(
x='principal component 1', y='principal component 2', color=alt.Color(
'class', scale=alt.Scale(scheme='blues')),tooltip=["class"]).interactive()
st.altair_chart(散点图)`