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+--- Thread: Using matplotlib in Spyder v/s REPL (/thread-28084.html)
Using matplotlib in Spyder v/s REPL - peterjv26 - Jul-04-2020
Hi, I am just starting off with Python and was playing around with matplotlib package.
I wrote a few lines as below to plot a graph
def plotgrh():
import matplotlib.pyplot as plt
fig, ax = plt.subplots(1,2)
print("I am plotting graph")
plt.plot([6,1,8,4],[4,7,2,1])
print("Graph plotted")I am able to import the above module and run plotgrh() in Spyder. I can see the graph plotted in the "Plots" tab in Spyder console.The msgs I am printing also get displayed. But if I open a powershell prompt, start python and run plotgrh() in the Python prompt (>>>), then only the print msgs are displayed but the graph is not displayed. What is need to get the graph plotted? Should I include any additional modules? The reason I need this is, I am trying to create some scripts that will plot graphs and want to be able to run them as a Windows application or from a DOS command prompt and not from within Spyder. Any suggestions/pointers is highly appreciated.
RE: Using matplotlib in Spyder v/s REPL - Gribouillis - Jul-04-2020
You could try
plt.show(block=False) perhaps.
RE: Using matplotlib in Spyder v/s REPL - snippsat - Jul-04-2020
If this running outside a environment like Sypder/REPL/Notebook.
The need to use
plt.show() to show the plot.import matplotlib.pyplot as plt
def plotgrh():
fig, ax = plt.subplots(1,2)
print("I am plotting graph")
plt.plot([6,1,8,4],[4,7,2,1])
# Uncomment for save plot
#plt.savefig('Graph.png')
plt.show()
print("Graph plotted")
plotgrh()