def simple():
import datetime
import io
import random
from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas
from matplotlib.figure import Figure
from matplotlib.dates import DateFormatter
try:
while True:
fig = Figure()
ax = fig.add_subplot(111)
x = []
y = []
now = datetime.datetime.now()
delta = datetime.timedelta(days=1)
for i in range(10):
x.append(now)
now += delta
y.append(random.randint(0, 1000))
ax.plot_date(x, y, '-')
ax.xaxis.set_major_formatter(DateFormatter('%Y-%m-%d'))
fig.autofmt_xdate()
canvas = FigureCanvas(fig)
png_output = io.BytesIO()
canvas.print_png(png_output)
response = make_response(png_output.getvalue())
response.headers['Content-Type'] = 'image/png'
return response
time.sleep(.001)
fig.cla()
except:
print('welp')
