saving . . . saved legend command shows no graph has been deleted. legend command shows no graph has been hidden .
legend command shows no graph
Title
Question
i put 
x=linspace(0,50,10)
plot(x,sin(x))
y=linspace(0,50,500)
plot(y,sin(y))
legend(['sin(x)','sin(y)'])

output : blank graph / no graph 
 
version : ipython3 7.19.0
python 3.8.6
windows 10 1806

Python-3.4.3 Multiple-plots 03-04 min 10-20 sec 05-11-20, 9:57 a.m. im_parth99

Answers:

Please try without the legend command to understand if the plot displays, please check if you get any warning or error in the commandline. Please let us know here in the comments to help you further
06-11-20, 9:26 a.m. ankitrj.iitb


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