AttributeError: 'DataFrame' object has no attribute 'Vmax' - pandas

Question

I try to solve this problem:
AttributeError: 'DataFrame' object has no attribute 'Vmax'
This is a code:
plt.figure(figsize = (15,5))
plt.plot(data.indice_tiempo, data.Vmax, label = 'Precio máximo')
plt.plot(data.indice_tiempo, data.Vmin, label = 'Precio mínimo')
plt.legend()
plt.xlabel('Fecha')
plt.ylabel('Precio')
#plt.ylim(-10,40)
plt.show()
AttributeError Traceback (most recent call last)
<ipython-input-28-e6aa3f72c6f3> in <module>
1 plt.figure(figsize = (15,5))
2
----> 3 plt.plot(data.indice_tiempo, data.Vmax, label = 'Precio máximo')
4 #plt.plot(data.indice_tiempo, data.Vmin, label = 'Precio mínimo')
5 plt.legend()
/usr/local/lib/python3.8/dist-packages/pandas/core/generic.py in __getattr__(self, name)
5485 ):
5486 return self[name]
-> 5487 return object.__getattribute__(self, name)
5488
5489 def __setattr__(self, name: str, value) -> None:
AttributeError: 'DataFrame' object has no attribute 'Vmax'

Answer 1

I maybe need more info to help you but I guess you are trying to plot a line representing the price of something and point the max and min price.
You can try something like this:
#Create dummy data
data_dict = {"indice_tiempo":[24,25,21,31,32,21],
"fecha":["01/06","02/06","03/06","04/06","05/06","06/06"]}
data = pd.DataFrame(data_dict)
#Set column "fecha" as index
data = data.set_index("fecha")
#Create plot
plt.figure(figsize = (15,5))
max_data = data.indice_tiempo.sort_values(ascending=False).head(1) #Filter max price data
min_data = data.indice_tiempo.sort_values(ascending=False).tail(1) #Filter min price data
plt.plot(data.index, data.indice_tiempo) #Plot line
plt.scatter(max_data.index, max_data.values, label = 'Precio máximo') #Plot max price point
plt.scatter(min_data.index, min_data.values, label = 'Precio mínimo') #Plot min price point
plt.legend()
plt.xlabel('Fecha')
plt.ylabel('Precio')
plt.show()
The error you are getting from Python is telling you that you don't have any column called "Vmax" in your dataframe.
I guess you're trying to call a function to get the max price.
For that you need to do this --> df.column_name.max() or df["column_name"].max()
Resulting PLOT