update demo and add plot module

1 files changed, 40 insertions, 0 deletions

diff --git a/ot/plot.py b/ot/plot.py
new file mode 100644
index 0000000..b8357b1
--- /dev/null
+++ b/ot/plot.py
@@ -0,0 +1,40 @@
+
+import numpy as np
+import matplotlib.pylab as pl
+from matplotlib import gridspec
+
+
+def otplot1D(a,b,M,title=''):
+    """ Plot a with the source and target 1D distribution """
+    
+    na=M.shape[0]
+    nb=M.shape[1]
+    
+    gs = gridspec.GridSpec(3, 3)
+    
+    
+    xa=np.arange(na)
+    xb=np.arange(nb)
+    
+    
+    ax1=pl.subplot(gs[0,1:])
+    pl.plot(xb,b,'r',label='Target distribution')
+    pl.yticks(())
+    pl.title(title)
+    
+    #pl.axis('off')
+    
+    ax2=pl.subplot(gs[1:,0])
+    pl.plot(a,xa,'b',label='Source distribution')
+    pl.gca().invert_xaxis()
+    pl.gca().invert_yaxis()
+    pl.xticks(())
+    #pl.ylim((0,n))
+    #pl.axis('off')
+    
+    pl.subplot(gs[1:,1:],sharex=ax1,sharey=ax2)
+    pl.imshow(M,interpolation='nearest')
+    
+    pl.xlim((0,nb))
+
+