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Commit09716fd

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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 commit09716fd

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‎examples/api/font_file.py‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,8 @@
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"""
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importos
18-
frommatplotlibimportfont_managerasfm,pyplotasplt,rcParams
18+
frommatplotlibimportfont_managerasfm,rcParams
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importmatplotlib.pyplotasplt
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fig,ax=plt.subplots()
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‎examples/api/power_norm.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
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"""
99

10-
frommatplotlibimportpyplotasplt
10+
importmatplotlib.pyplotasplt
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importmatplotlib.colorsasmcolors
1212
importnumpyasnp
1313
fromnumpy.randomimportmultivariate_normal

‎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
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"""
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
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13-
fig=plt.figure(1,figsize=(6,3))
12+
fig, (ax1,ax2)=plt.subplots(1,2)
1413
fig.subplots_adjust(wspace=0.5)
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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)
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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")
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cax2.xaxis.set_ticks_position("top")
25+
3026
plt.show()

‎examples/event_handling/lasso_demo.py‎

Lines changed: 8 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -10,13 +10,12 @@
1010
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
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14+
frommatplotlibimportcolorsasmcolors,path
15+
frommatplotlib.collectionsimportRegularPolyCollection
1716
importmatplotlib.pyplotasplt
18-
fromnumpyimportnonzero
19-
fromnumpy.randomimportrand
17+
frommatplotlib.widgetsimportLasso
18+
importnumpyasnp
2019

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classDatum(object):
@@ -77,9 +76,12 @@ def onpress(self, event):
7776
# acquire a lock on the widget drawing
7877
self.canvas.widgetlock(self.lasso)
7978

79+
8080
if__name__=='__main__':
8181

82-
data= [Datum(*xy)forxyinrand(100,2)]
82+
np.random.seed(19680801)
83+
84+
data= [Datum(*xy)forxyinnp.random.rand(100,2)]
8385
ax=plt.axes(xlim=(0,1),ylim=(0,1),autoscale_on=False)
8486
ax.set_title('Lasso points using left mouse button')
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‎examples/event_handling/pick_event_demo2.py‎

Lines changed: 3 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -29,11 +29,10 @@ def onpick(event):
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ifnotN:
3030
returnTrue
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32-
figi=plt.figure()
33-
forsubplotnum,dataindinenumerate(event.ind):
34-
ax=figi.add_subplot(N,1,subplotnum+1)
32+
figi,axs=plt.subplots(N,squeeze=False)
33+
forax,dataindinzip(axs.flat,event.ind):
3534
ax.plot(X[dataind])
36-
ax.text(0.05,0.9,'mu=%1.3f\nsigma=%1.3f'% (xs[dataind],ys[dataind]),
35+
ax.text(.05,.9,'mu=%1.3f\nsigma=%1.3f'% (xs[dataind],ys[dataind]),
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transform=ax.transAxes,va='top')
3837
ax.set_ylim(-0.5,1.5)
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figi.show()

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

‎examples/images_contours_and_fields/multi_image.py‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -6,7 +6,8 @@
66
Make a set of images with a single colormap, norm, and colorbar.
77
"""
88

9-
frommatplotlibimportcolors,pyplotasplt
9+
frommatplotlibimportcolors
10+
importmatplotlib.pyplotasplt
1011
importnumpyasnp
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1213
np.random.seed(19680801)

‎examples/lines_bars_and_markers/eventplot_demo.py‎

Lines changed: 9 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -32,18 +32,15 @@
3232
lineoffsets1=np.array([-15,-3,1,1.5,6,10])
3333
linelengths1= [5,2,1,1,3,1.5]
3434

35-
fig=plt.figure()
35+
fig,axs=plt.subplots(2,2)
3636

3737
# create a horizontal plot
38-
ax1=fig.add_subplot(221)
39-
ax1.eventplot(data1,colors=colors1,lineoffsets=lineoffsets1,
40-
linelengths=linelengths1)
41-
38+
axs[0,0].eventplot(data1,colors=colors1,lineoffsets=lineoffsets1,
39+
linelengths=linelengths1)
4240

4341
# create a vertical plot
44-
ax2=fig.add_subplot(223)
45-
ax2.eventplot(data1,colors=colors1,lineoffsets=lineoffsets1,
46-
linelengths=linelengths1,orientation='vertical')
42+
axs[1,0].eventplot(data1,colors=colors1,lineoffsets=lineoffsets1,
43+
linelengths=linelengths1,orientation='vertical')
4744

4845
# create another set of random data.
4946
# the gamma distribution is only used fo aesthetic purposes
@@ -57,14 +54,12 @@
5754
linelengths2=1
5855

5956
# create a horizontal plot
60-
ax1=fig.add_subplot(222)
61-
ax1.eventplot(data2,colors=colors2,lineoffsets=lineoffsets2,
62-
linelengths=linelengths2)
57+
axs[0,1].eventplot(data2,colors=colors2,lineoffsets=lineoffsets2,
58+
linelengths=linelengths2)
6359

6460

6561
# create a vertical plot
66-
ax2=fig.add_subplot(224)
67-
ax2.eventplot(data2,colors=colors2,lineoffsets=lineoffsets2,
68-
linelengths=linelengths2,orientation='vertical')
62+
axs[1,1].eventplot(data2,colors=colors2,lineoffsets=lineoffsets2,
63+
linelengths=linelengths2,orientation='vertical')
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7065
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 @@
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"""
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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"""
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)
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1717
fig,ax=plt.subplots()

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