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Commitbf514e5

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committed
Various examples updates.
- don't import out of pyplot or numpy, import as plt/np.- move some examples to use subplots() instead of add_subplot.- set random seed for some examples.- fix some docstrings.
1 parent4872b79 commitbf514e5

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29 files changed

+154
-162
lines changed

29 files changed

+154
-162
lines changed

‎examples/axes_grid1/demo_colorbar_with_axes_divider.py‎

Lines changed: 3 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -4,27 +4,23 @@
44
===============================
55
66
"""
7+
78
importmatplotlib.pyplotasplt
89
frommpl_toolkits.axes_grid1.axes_dividerimportmake_axes_locatable
9-
1010
frommpl_toolkits.axes_grid1.colorbarimportcolorbar
11-
# from matplotlib.pyplot import colorbar
1211

13-
fig=plt.figure(1,figsize=(6,3))
12+
fig, (ax1,ax2)=plt.subplots(1,2)
1413
fig.subplots_adjust(wspace=0.5)
1514

16-
ax1=fig.add_subplot(121)
1715
im1=ax1.imshow([[1,2], [3,4]])
18-
1916
ax1_divider=make_axes_locatable(ax1)
2017
cax1=ax1_divider.append_axes("right",size="7%",pad="2%")
2118
cb1=colorbar(im1,cax=cax1)
2219

23-
ax2=fig.add_subplot(122)
2420
im2=ax2.imshow([[1,2], [3,4]])
25-
2621
ax2_divider=make_axes_locatable(ax2)
2722
cax2=ax2_divider.append_axes("top",size="7%",pad="2%")
2823
cb2=colorbar(im2,cax=cax2,orientation="horizontal")
2924
cax2.xaxis.set_ticks_position("top")
25+
3026
plt.show()

‎examples/event_handling/lasso_demo.py‎

Lines changed: 8 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -10,13 +10,11 @@
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This is currently a proof-of-concept implementation (though it is
1111
usable as is). There will be some refinement of the API.
1212
"""
13-
frommatplotlib.widgetsimportLasso
14-
frommatplotlib.collectionsimportRegularPolyCollection
15-
frommatplotlibimportcolorsasmcolors,path
1613

17-
importmatplotlib.pyplotasplt
18-
fromnumpyimportnonzero
19-
fromnumpy.randomimportrand
14+
frommatplotlibimportcolorsasmcolors,path,pyplotasplt
15+
frommatplotlib.collectionsimportRegularPolyCollection
16+
frommatplotlib.widgetsimportLasso
17+
importnumpyasnp
2018

2119

2220
classDatum(object):
@@ -77,9 +75,12 @@ def onpress(self, event):
7775
# acquire a lock on the widget drawing
7876
self.canvas.widgetlock(self.lasso)
7977

78+
8079
if__name__=='__main__':
8180

82-
data= [Datum(*xy)forxyinrand(100,2)]
81+
np.random.seed(19680801)
82+
83+
data= [Datum(*xy)forxyinnp.random.rand(100,2)]
8384
ax=plt.axes(xlim=(0,1),ylim=(0,1),autoscale_on=False)
8485
ax.set_title('Lasso points using left mouse button')
8586

‎examples/event_handling/zoom_window.py‎

Lines changed: 16 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -6,27 +6,27 @@
66
This example shows how to connect events in one window, for example, a mouse
77
press, to another figure window.
88
9-
If you click on a point in the first window, the z and y limits of the
10-
secondwill be adjusted so that the center of the zoom in the second
11-
window will bethe x,y coordinates of the clicked point.
9+
If you click on a point in the first window, the z and y limits of the second
10+
will be adjusted so that the center of the zoom in the second window will be
11+
the x,y coordinates of the clicked point.
1212
13-
Note the diameter of the circles in the scatter are defined in
14-
points**2, sotheir size is independent of the zoom
13+
Note the diameter of the circles in the scatter are defined in points**2, so
14+
their size is independent of the zoom.
1515
"""
16-
frommatplotlib.pyplotimportfigure,show
16+
17+
frommatplotlibimportpyplotasplt
1718
importnumpyasnp
18-
figsrc=figure()
19-
figzoom=figure()
20-
21-
axsrc=figsrc.add_subplot(111,xlim=(0,1),ylim=(0,1),autoscale_on=False)
22-
axzoom=figzoom.add_subplot(111,xlim=(0.45,0.55),ylim=(0.4,.6),
23-
autoscale_on=False)
24-
axsrc.set_title('Click to zoom')
25-
axzoom.set_title('zoom window')
19+
20+
figsrc,axsrc=plt.subplots()
21+
figzoom,axzoom=plt.subplots()
22+
axsrc.set(xlim=(0,1),ylim=(0,1),autoscale_on=False,
23+
title='Click to zoom')
24+
axzoom.set(xlim=(0.45,0.55),ylim=(0.4,0.6),autoscale_on=False,
25+
title='Zoom window')
26+
2627
x,y,s,c=np.random.rand(4,200)
2728
s*=200
2829

29-
3030
axsrc.scatter(x,y,s,c)
3131
axzoom.scatter(x,y,s,c)
3232

@@ -40,4 +40,4 @@ def onpress(event):
4040
figzoom.canvas.draw()
4141

4242
figsrc.canvas.mpl_connect('button_press_event',onpress)
43-
show()
43+
plt.show()

‎examples/lines_bars_and_markers/gradient_bar.py‎

Lines changed: 9 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -5,8 +5,9 @@
55
66
"""
77
importmatplotlib.pyplotasplt
8-
fromnumpyimportarange
9-
fromnumpy.randomimportrand
8+
importnumpyasnp
9+
10+
np.random.seed(19680801)
1011

1112

1213
defgbar(ax,x,y,width=0.5,bottom=0):
@@ -17,20 +18,19 @@ def gbar(ax, x, y, width=0.5, bottom=0):
1718
extent=(left,right,bottom,top),alpha=1)
1819

1920

20-
fig=plt.figure()
21-
2221
xmin,xmax=xlim=0,10
2322
ymin,ymax=ylim=0,1
24-
ax=fig.add_subplot(111,xlim=xlim,ylim=ylim,
25-
autoscale_on=False)
26-
X= [[.6,.6], [.7,.7]]
2723

24+
fig,ax=plt.subplots()
25+
ax.set(xlim=xlim,ylim=ylim,autoscale_on=False)
26+
27+
X= [[.6,.6], [.7,.7]]
2828
ax.imshow(X,interpolation='bicubic',cmap=plt.cm.copper,
2929
extent=(xmin,xmax,ymin,ymax),alpha=1)
3030

3131
N=10
32-
x=arange(N)+0.25
33-
y=rand(N)
32+
x=np.arange(N)+0.25
33+
y=np.random.rand(N)
3434
gbar(ax,x,y,width=0.7)
3535
ax.set_aspect('auto')
3636
plt.show()

‎examples/lines_bars_and_markers/interp_demo.py‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -5,13 +5,13 @@
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66
"""
77
importmatplotlib.pyplotasplt
8-
fromnumpyimportpi,sin,linspace
8+
importnumpyasnp
99
frommatplotlib.mlabimportstineman_interp
1010

11-
x=linspace(0,2*pi,20)
12-
y=sin(x)
11+
x=np.linspace(0,2*np.pi,20)
12+
y=np.sin(x)
1313
yp=None
14-
xi=linspace(x[0],x[-1],100)
14+
xi=np.linspace(x[0],x[-1],100)
1515
yi=stineman_interp(xi,x,y,yp)
1616

1717
fig,ax=plt.subplots()

‎examples/misc/pythonic_matplotlib.py‎

Lines changed: 7 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,6 @@
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instances, managing the bounding boxes of the figure elements,
1515
creating and realizing GUI windows and embedding figures in them.
1616
17-
1817
If you are an application developer and want to embed matplotlib in
1918
your application, follow the lead of examples/embedding_in_wx.py,
2019
examples/embedding_in_gtk.py or examples/embedding_in_tk.py. In this
@@ -55,30 +54,26 @@
5554
a.set_yticks([])
5655
"""
5756

57+
frommatplotlibimportpyplotasplt
58+
importnumpyasnp
5859

59-
frommatplotlib.pyplotimportfigure,show
60-
fromnumpyimportarange,sin,pi
61-
62-
t=arange(0.0,1.0,0.01)
60+
t=np.arange(0.0,1.0,0.01)
6361

64-
fig=figure(1)
62+
fig, (ax1,ax2)=plt.subplots(2)
6563

66-
ax1=fig.add_subplot(211)
67-
ax1.plot(t,sin(2*pi*t))
64+
ax1.plot(t,np.sin(2*np.pi*t))
6865
ax1.grid(True)
6966
ax1.set_ylim((-2,2))
7067
ax1.set_ylabel('1 Hz')
7168
ax1.set_title('A sine wave or two')
7269

7370
ax1.xaxis.set_tick_params(labelcolor='r')
7471

75-
76-
ax2=fig.add_subplot(212)
77-
ax2.plot(t,sin(2*2*pi*t))
72+
ax2.plot(t,np.sin(2*2*np.pi*t))
7873
ax2.grid(True)
7974
ax2.set_ylim((-2,2))
8075
l=ax2.set_xlabel('Hi mom')
8176
l.set_color('g')
8277
l.set_fontsize('large')
8378

84-
show()
79+
plt.show()

‎examples/pie_and_polar_charts/polar_legend.py‎

Lines changed: 7 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -5,16 +5,17 @@
55
66
Demo of a legend on a polar-axis plot.
77
"""
8+
9+
frommatplotlibimportpyplotasplt
810
importnumpyasnp
9-
frommatplotlib.pyplotimportfigure,show,rc
1011

1112
# radar green, solid grid lines
12-
rc('grid',color='#316931',linewidth=1,linestyle='-')
13-
rc('xtick',labelsize=15)
14-
rc('ytick',labelsize=15)
13+
plt.rc('grid',color='#316931',linewidth=1,linestyle='-')
14+
plt.rc('xtick',labelsize=15)
15+
plt.rc('ytick',labelsize=15)
1516

1617
# force square figure and square axes looks better for polar, IMO
17-
fig=figure(figsize=(8,8))
18+
fig=plt.figure(figsize=(8,8))
1819
ax=fig.add_axes([0.1,0.1,0.8,0.8],
1920
projection='polar',facecolor='#d5de9c')
2021

@@ -24,4 +25,4 @@
2425
ax.plot(0.5*theta,r,color='blue',ls='--',lw=3,label='another line')
2526
ax.legend()
2627

27-
show()
28+
plt.show()

‎examples/recipes/common_date_problems.py‎

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -55,9 +55,9 @@
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5656
# Matplotlib prefers datetime instead of np.datetime64.
5757
date=r.date.astype('O')
58-
plt.figure()
59-
plt.plot(date,r.close)
60-
plt.title('Default date handling can cause overlapping labels')
58+
fig,ax=plt.subplots()
59+
ax.plot(date,r.close)
60+
ax.title('Default date handling can cause overlapping labels')
6161

6262
###############################################################################
6363
# Another annoyance is that if you hover the mouse over the window and
@@ -88,3 +88,5 @@
8888
###############################################################################
8989
# Now when you hover your mouse over the plotted data, you'll see date
9090
# format strings like 2004-12-01 in the toolbar.
91+
92+
plt.show()

‎examples/recipes/create_subplots.py‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -37,3 +37,5 @@
3737
# new style method 2; use an axes array
3838
fig,axs=plt.subplots(2,2,sharex=True,sharey=True)
3939
axs[0,0].plot(x)
40+
41+
plt.show()

‎examples/recipes/fill_between_alpha.py‎

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Original file line numberDiff line numberDiff line change
@@ -134,3 +134,5 @@
134134
# functions :meth:`~matplotlib.axes.Axes.axhspan` and
135135
# :meth:`~matplotlib.axes.Axes.axvspan` and example
136136
# :ref:`sphx_glr_gallery_subplots_axes_and_figures_axhspan_demo.py`.
137+
138+
plt.show()

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