我有一个pandas.DataFrame对象,我想将其转换为gviz_api.DataTable,然后我会在谷歌图表中使用它。
有一种简单的方法吗?
答案 0 :(得分:0)
我不知道将pandas数据帧强制转换为gviz数据表的任何简单方法。
我是这样做的: -
from gviz_data_table import Table # using https://bitbucket.org/charlie_x/gviz-data-table though you should probably use the official google one.
import numpy as np
import pandas as pd
df = pd.DataFrame({
"time" : [1,2,3,4,5],
"temp" : np.random.rand(5)
})
table = Table()
table.add_column('temp', float, 'Temp')
table.add_column('time', float, 'Time')
for row in df.iterrows():
table.append(row[1].tolist())
table.rows
[OrderedDict([('temp', <gviz_data_table.cell.Cell object at 0x104a64aa0>), ('time', <gviz_data_table.cell.Cell object at 0x104a64a50>)]),
OrderedDict([('temp', <gviz_data_table.cell.Cell object at 0x104a64af0>), ('time', <gviz_data_table.cell.Cell object at 0x104a64b40>)]),
OrderedDict([('temp', <gviz_data_table.cell.Cell object at 0x104a64b90>), ('time', <gviz_data_table.cell.Cell object at 0x104a64be0>)]),
OrderedDict([('temp', <gviz_data_table.cell.Cell object at 0x104a64c30>), ('time', <gviz_data_table.cell.Cell object at 0x104a64c80>)]),
OrderedDict([('temp', <gviz_data_table.cell.Cell object at 0x104a64cd0>), ('time', <gviz_data_table.cell.Cell object at 0x104a64d20>)])]
答案 1 :(得分:0)
作为使用iterrows和list的替代方法,您可以使用.values将数据帧作为numpy对象(数组数组 - 每行一个)
完成整个过程并将其转换为GViz表
代码示例
#set up Google Table w/ the description
gpa_desc=[("grade_date", "date", "Date" ),
("gpa", "number", "GPA")]
gpa_data_table=gviz_api.DataTable(gpa_desc)
#your df as a numpy object
gpa_values=df_gpa.values
#populate the table with your data
gpa_data_table.LoadData(gpa_values)
#convert to json to pass to the view
gpa_json=gpa_data_table.ToJSon()