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used plt.subplots everywhere

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Siva Prasad Varma
2014-03-14 17:37:14 +05:30
parent c60d15f2f4
commit fb72fb04b2
22 changed files with 350 additions and 405 deletions
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doc/examples/applications/plot_coins_segmentation.py
+44 -50
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@@ -16,13 +16,11 @@ from skimage import data
coins = data.coins()
hist = np.histogram(coins, bins=np.arange(0, 256))
plt.figure(figsize=(8, 3))
plt.subplot(121)
plt.imshow(coins, cmap=plt.cm.gray, interpolation='nearest')
plt.axis('off')
plt.subplot(122)
plt.plot(hist[1][:-1], hist[0], lw=2)
plt.title('histogram of grey values')
f, (ax1, ax2) = plt.subplots(1, 2, figsize=(8, 3))
ax1.imshow(coins, cmap=plt.cm.gray, interpolation='nearest')
ax1.axis('off')
ax2.plot(hist[1][:-1], hist[0], lw=2)
ax2.set_title('histogram of grey values')
"""
.. image:: PLOT2RST.current_figure
@@ -37,17 +35,15 @@ background with the coins:
"""
plt.figure(figsize=(6, 3))
plt.subplot(121)
plt.imshow(coins > 100, cmap=plt.cm.gray, interpolation='nearest')
plt.title('coins > 100')
plt.axis('off')
plt.subplot(122)
plt.imshow(coins > 150, cmap=plt.cm.gray, interpolation='nearest')
plt.title('coins > 150')
plt.axis('off')
f, (ax1, ax2) = plt.subplots(1, 2, figsize=(6, 3))
ax1.imshow(coins > 100, cmap=plt.cm.gray, interpolation='nearest')
ax1.set_title('coins > 100')
ax1.axis('off')
ax2.imshow(coins > 150, cmap=plt.cm.gray, interpolation='nearest')
ax2.set_title('coins > 150')
ax2.axis('off')
margins = dict(hspace=0.01, wspace=0.01, top=1, bottom=0, left=0, right=1)
plt.subplots_adjust(**margins)
f.subplots_adjust(**margins)
"""
.. image:: PLOT2RST.current_figure
@@ -64,10 +60,10 @@ edge-detector.
from skimage.filter import canny
edges = canny(coins/255.)
plt.figure(figsize=(4, 3))
plt.imshow(edges, cmap=plt.cm.gray, interpolation='nearest')
plt.axis('off')
plt.title('Canny detector')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(edges, cmap=plt.cm.gray, interpolation='nearest')
ax.axis('off')
ax.set_title('Canny detector')
"""
.. image:: PLOT2RST.current_figure
@@ -79,10 +75,10 @@ from scipy import ndimage
fill_coins = ndimage.binary_fill_holes(edges)
plt.figure(figsize=(4, 3))
plt.imshow(fill_coins, cmap=plt.cm.gray, interpolation='nearest')
plt.axis('off')
plt.title('Filling the holes')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(fill_coins, cmap=plt.cm.gray, interpolation='nearest')
ax.axis('off')
ax.set_title('Filling the holes')
"""
.. image:: PLOT2RST.current_figure
@@ -93,10 +89,10 @@ objects.
from skimage import morphology
coins_cleaned = morphology.remove_small_objects(fill_coins, 21)
plt.figure(figsize=(4, 3))
plt.imshow(coins_cleaned, cmap=plt.cm.gray, interpolation='nearest')
plt.axis('off')
plt.title('Removing small objects')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(coins_cleaned, cmap=plt.cm.gray, interpolation='nearest')
ax.axis('off')
ax.set_title('Removing small objects')
"""
.. image:: PLOT2RST.current_figure
@@ -117,10 +113,10 @@ from skimage.filter import sobel
elevation_map = sobel(coins)
plt.figure(figsize=(4, 3))
plt.imshow(elevation_map, cmap=plt.cm.jet, interpolation='nearest')
plt.axis('off')
plt.title('elevation_map')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(elevation_map, cmap=plt.cm.jet, interpolation='nearest')
ax.axis('off')
ax.set_title('elevation_map')
"""
.. image:: PLOT2RST.current_figure
@@ -133,10 +129,10 @@ markers = np.zeros_like(coins)
markers[coins < 30] = 1
markers[coins > 150] = 2
plt.figure(figsize=(4, 3))
plt.imshow(markers, cmap=plt.cm.spectral, interpolation='nearest')
plt.axis('off')
plt.title('markers')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(markers, cmap=plt.cm.spectral, interpolation='nearest')
ax.axis('off')
ax.set_title('markers')
"""
.. image:: PLOT2RST.current_figure
@@ -147,10 +143,10 @@ starting from the markers determined above:
"""
segmentation = morphology.watershed(elevation_map, markers)
plt.figure(figsize=(4, 3))
plt.imshow(segmentation, cmap=plt.cm.gray, interpolation='nearest')
plt.axis('off')
plt.title('segmentation')
f, ax = plt.subplots(figsize=(4, 3))
ax.imshow(segmentation, cmap=plt.cm.gray, interpolation='nearest')
ax.axis('off')
ax.set_title('segmentation')
"""
.. image:: PLOT2RST.current_figure
@@ -166,16 +162,14 @@ segmentation = ndimage.binary_fill_holes(segmentation - 1)
labeled_coins, _ = ndimage.label(segmentation)
image_label_overlay = label2rgb(labeled_coins, image=coins)
plt.figure(figsize=(6, 3))
plt.subplot(121)
plt.imshow(coins, cmap=plt.cm.gray, interpolation='nearest')
plt.contour(segmentation, [0.5], linewidths=1.2, colors='y')
plt.axis('off')
plt.subplot(122)
plt.imshow(image_label_overlay, interpolation='nearest')
plt.axis('off')
f, (ax1, ax2) = plt.subplots(1, 2, figsize=(6, 3))
ax1.imshow(coins, cmap=plt.cm.gray, interpolation='nearest')
ax1.contour(segmentation, [0.5], linewidths=1.2, colors='y')
ax1.axis('off')
ax2.imshow(image_label_overlay, interpolation='nearest')
ax2.axis('off')
plt.subplots_adjust(**margins)
f.subplots_adjust(**margins)
"""
.. image:: PLOT2RST.current_figure