hi

i am workind on the thread "filling"

since a cuple of months i did not use Matplotlib

i have difficulties to get comfortable with simple lines of code

for example (end of this mail)

- why do the circle appear so big whereas the dimension of the picture are [0,5] for x and for y and the radius of the circle is 0.05 ?

- why, if i cancel the paragraph named "oeil......", do the circle disappear ?

thanks for your help...

figur generated :

lines of code :

## ···

-----

import numpy as np

import matplotlib.pyplot as plt

import matplotlib as mpl

# quelques param?tres par d?faut

plt.style.use('bmh')

mpl.rcParams['font.family'] = 'STIXGeneral'

plt.rcParams["font.size"] = 10

# dimensions ? choisir

xmin,xmax,ymin,ymax=0,5,0,5

(L,l)=(7,7)

# fenetrages divers

Linch,linch=(L/2.54,l/2.54)

fig, lafigure = plt.subplots(figsize=(Linch,linch))

Lx,x,Ly,y=[],xmin,[],ymin

while (x<=xmax):

Lx.append(x)

x+=1

while (y<=ymax):

Ly.append(y)

y+=1

#oeil.............

X1 = np.linspace(1-np.sqrt(2),1+np.sqrt(2), 256,endpoint=True)

Y1 = np.sqrt(2-X1**2)

lafigure.plot(X1, Y1, color="black", linewidth=0.5, linestyle="-")

lafigure.plot(X1, 1-Y1, color="black", linewidth=0.5, linestyle="-")

# trac? d'un cercle

r=0.05

lafigure.add_patch(mpl.patches.Circle((r, r),1,color ='black', linewidth=0.5, fill=False,linestyle="--"))

plt.axis('off')

lafigure.spines['right'].set_visible(True)

plt.show()

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