如何根据 pandas 数据框中的用户选择显示值
How to show values based on the user selection in pandas dataframe
第二个多选的选项将根据预先存在的数据结构中的值进行更改。
import pandas as pd
import streamlit as st
df = pd.DataFrame({"A":[4,6,6],
"B":[4,6,9],
"C":[1,2,3],
})
interactive = st.beta_container()
col1, col2 = st.beta_columns(2)
with interactive:
all_columns_names= df.columns.tolist()
with col1:
option1 = st.multiselect("select column to plot",all_columns_names)
with col2:
option2 = st.multiselect("select required value/s to
plot",list(set(df.loc[(df.iloc[:,0].isin(option1))][df.columns[1]])))
示例:
if option1 = B
then option2 = [4,6,9]
if option1 = [A,C]
then option2 = [4,6,6,1,2,3]
col1
中的语句哪里出错了?如何获取与所选 option1
相关的 option2
的值?
您可以通过迭代每一列来获取列的值,并将它们附加到容器中。
with interactive:
with col2:
vals = set()
if not isinstance(option1, list):
option1 = [option1]
for col in option1:
vals.update(df[col].values.tolist())
option2 = st.multiselect("select required value/s to plot", list(vals))
第二个多选的选项将根据预先存在的数据结构中的值进行更改。
import pandas as pd
import streamlit as st
df = pd.DataFrame({"A":[4,6,6],
"B":[4,6,9],
"C":[1,2,3],
})
interactive = st.beta_container()
col1, col2 = st.beta_columns(2)
with interactive:
all_columns_names= df.columns.tolist()
with col1:
option1 = st.multiselect("select column to plot",all_columns_names)
with col2:
option2 = st.multiselect("select required value/s to
plot",list(set(df.loc[(df.iloc[:,0].isin(option1))][df.columns[1]])))
示例:
if option1 = B
then option2 = [4,6,9]
if option1 = [A,C]
then option2 = [4,6,6,1,2,3]
col1
中的语句哪里出错了?如何获取与所选 option1
相关的 option2
的值?
您可以通过迭代每一列来获取列的值,并将它们附加到容器中。
with interactive:
with col2:
vals = set()
if not isinstance(option1, list):
option1 = [option1]
for col in option1:
vals.update(df[col].values.tolist())
option2 = st.multiselect("select required value/s to plot", list(vals))