是否可以在没有轴的情况下向绘图中添加另一个值？

Question

我有一个要求，我需要绘制带有两个轴x和y的图形。是否可以在该图中添加另一个参数（例如z）而不在图中绘制它？

例如，如果水在凌晨5点在100 ^o C沸腾，我想以X绘制时间，以Y绘制度数，并标出“ Water”一词悬停在该点时添加。

更新： 在下图中，将数据帧悬停在该点上时显示了两个点，现在我想知道是否有可能将数据帧的另一列添加到悬停，即对应于16.3、621.1的列为300，那么我也想在悬停中显示300，而无需明确绘制它。

谢谢

Shyam

Answer 1

这绝对不是一个优雅的解决方案，但是它可以工作：

import plotly
import plotly.graph_objs as go
import pandas as pd

#Create a pandas DataFrame
df = pd.DataFrame({"temp":["100", "15", "95", "90", "85"],
                   "time":["4 AM", "5 AM", "6 AM", "7 AM", "8 AM"],
                   "substance":["Water", "Milk", "Honey", "Beer", "Soda"]})
#Create a lists from DataFrame columns
temp = df["temp"]
time = df["time"]
substance = df["substance"]
#Create an empty list
textlist = []
#Fill this list with info from all of the lists above
for i in [*range(len(temp))]:
    i = temp[i] + "," + time[i] + "," + substance[i] 
    textlist.append(i)
#Set title plot
title = "Boil water"
#Choose in parameter text what you want to see (textlist)
data = [go.Scatter(x = df["time"], 
                   y = df["temp"], 
                   text = textlist,
                   hoverinfo = "text",
                   marker = dict(color = "green"),
                   showlegend = False)]
#Using plotly in offline mode
plotly.offline.init_notebook_mode(connected=True)  
#Save plot in directory where your script located without open in browser
plotly.offline.plot({"data": data, "layout": go.Layout(title=title)},
                    auto_open=False, filename = str(title) + ".html")

时间在X轴上，温度在Y轴上，当您将鼠标悬停在图表中的任何点上时，您都会看到类似“ 100，4 AM，Water”的信息