如何使用散景使年份出现在 x 轴上

Question

我有一个

csv

文件，并试图使年份出现在 x 轴上，但年份无法出现。

from bokeh.plotting import figure
from bokeh.io import output_file, output_notebook, show
from bokeh.layouts import column
from bokeh.models import HoverTool, ColumnDataSource

data = pd.read_csv('amountsaved.csv')
data.head()

data['year']=pd.to_datetime(data['year'])


# create a new plot with a title and axis labels
p = figure(title="amount saved", x_axis_type='datetime', x_axis_label="year", y_axis_label="amount")

# add a line renderer with legend and line thickness
p.line(x, y, legend_label="amt saved", line_width=2)

# Plot date along the x axis and price along the y axis
p.line(data['year'], data['amountsaved'], line_color='green')

# show the results
show(p)

O输出：

我的

csv

文件中的数据只有年份（例如：2010,2011,2012），没有月份。我不知道为什么输出显示月份。

Answer 1

您的年份数据真的只有 2010 年、2011 年等吗？ 我根据您的代码和这些数据做了一个简单的例子，它工作得很好。我不得不删除线

p.line(x, y, legend_label="amt saved", line_width=2)

但是，因为您的示例没有定义

x

和

y

。

from bokeh.plotting import figure
from bokeh.io import output_file, output_notebook, show
from bokeh.layouts import column
from bokeh.models import HoverTool, ColumnDataSource
import pandas

output_notebook()

data = {'year': ['2010', '2011', '2012'], 'amountsaved': [0,1,2,]}
data = pandas.DataFrame.from_dict(data)

data['year']=pandas.to_datetime(data['year'])

# create a new plot with a title and axis labels
p = figure(title="amount saved", x_axis_type='datetime', x_axis_label="year", y_axis_label="amount")

# Plot date along the x axis and price along the y axis
p.line(data['year'], data['amountsaved'], line_color='green')

# show the results
show(p)