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exo.py
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Created
Mon, Feb 24, 00:24
Size
2 KB
Mime Type
text/x-python
Expires
Wed, Feb 26, 00:24 (2 d)
Engine
blob
Format
Raw Data
Handle
24424477
Attached To
R7571 SP4E-TB-TL-FR
exo.py
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#!/usr/bin/python
import
numpy
as
np
import
math
import
matplotlib.pyplot
as
plt
################################################################
def
evalFunction
(
f
,
xmin
,
xmax
,
npoints
):
x
=
np
.
linspace
(
xmin
,
xmax
,
npoints
)
y
=
f
(
x
)
return
x
,
y
################################################################
def
myPlot
(
x
,
y
,
fig
,
label
=
None
,
linestyle
=
'-'
,
marker
=
''
,
xlabel
=
''
,
ylabel
=
''
,
title
=
''
,
axe
=
None
):
x
=
np
.
array
(
x
)
y
=
np
.
array
(
y
)
if
axe
is
None
:
axe
=
fig
.
add_subplot
(
111
)
axe
.
plot
(
x
,
y
,
linestyle
=
linestyle
,
marker
=
marker
,
label
=
label
)
axe
.
set_title
(
title
)
axe
.
set_xlabel
(
xlabel
)
axe
.
set_ylabel
(
ylabel
)
if
label
is
not
None
:
axe
.
legend
()
################################################################
def
exo1
():
x
=
[
0.
,
2.
,
4.
,
6.
,
8.
,
10.
]
y
=
[
0.
,
0.
,
0.
,
1.
,
1.
,
1.
]
myPlot
(
x
,
y
,
plt
.
figure
())
myPlot
(
x
,
y
,
plt
.
figure
(),
marker
=
'x'
,
linestyle
=
'--'
)
################################################################
def
exo2
():
x
=
np
.
array
([
0.
,
2.
,
4.
,
6.
,
8.
,
10.
])
y
=
np
.
array
([
0.
,
0.
,
0.
,
1.
,
1.
,
1.
])
fig
=
plt
.
figure
()
axe
=
fig
.
add_subplot
(
111
)
myPlot
(
x
,
y
,
fig
,
title
=
'my super cool plot'
,
xlabel
=
'my X'
,
ylabel
=
'my Y'
,
label
=
'step'
,
axe
=
axe
)
myPlot
(
x
,
-
1.
*
y
,
fig
,
title
=
'my super cool plot'
,
xlabel
=
'my X'
,
ylabel
=
'my Y'
,
label
=
'$-y$'
,
axe
=
axe
)
fig
.
savefig
(
'myfigure.pdf'
)
################################################################
def
exo3
():
xmin
=
0.
xmax
=
2.
*
math
.
pi
npoints
=
100
x
=
np
.
linspace
(
xmin
,
xmax
,
npoints
)
y
=
np
.
sin
(
x
)
myPlot
(
x
,
y
,
plt
.
figure
(),
label
=
'$sin(x)$'
)
################################################################
def
exo4
():
fdata
=
np
.
loadtxt
(
'data.plot'
)
print
(
fdata
.
shape
)
fig
=
plt
.
figure
()
axe
=
fig
.
add_subplot
(
111
)
myPlot
(
fdata
[:,
0
],
fdata
[:,
1
],
fig
,
label
=
'analytic'
,
axe
=
axe
)
myPlot
(
fdata
[:,
0
],
fdata
[:,
2
],
fig
,
label
=
'measure'
,
axe
=
axe
)
fig2
=
plt
.
figure
()
error_val
=
np
.
sqrt
((
fdata
[:,
1
]
-
fdata
[:,
2
])
**
2
)
myPlot
(
fdata
[:,
0
],
error_val
,
fig2
,
label
=
'error'
)
fig3
=
plt
.
figure
()
axe
=
fig3
.
add_subplot
(
111
)
axe
.
errorbar
(
fdata
[:,
0
],
fdata
[:,
1
],
error_val
,
marker
=
'D'
,
linestyle
=
'--'
,
label
=
'prediction'
)
################################################################
exo1
()
exo2
()
exo3
()
exo4
()
plt
.
show
()
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