Get colorbar ticklabels

Question

I have a scatter plot:

x,y,c,s = np.random.rand(100), np.random.rand(100), np.random.rand(100)*100, np.random.rand(100)*100
plt.scatter(x,y,c=c,s=s,cmap='YlGnBu', alpha=0.3)
cbar = plt.colorbar()

How do I get the colorbar ticklabels? I can imagine that with cbar.ax.get_yticklabels() I get pretty close to the solution. However, given the figure below, I'd like to have something like:

array([ 10.,  20.,  30.,  40.,  50.,  60.,  70.,  80.,  90.])

Answer 1

This gives you the ticks on the scale of the y-axis of the colorbar, which has limits (0.0, 1.0)

cbar.ax.get_yticks()

This is what you need:

np.interp(cbar.ax.get_yticks(), cbar.ax.get_ylim(), cbar.get_clim())

The result is:

array([ 10.,  20.,  30.,  40.,  50.,  60.,  70.,  80.,  90.])

Answer 2

Try this:

x,y,c,s = np.random.rand(100), np.random.rand(100), np.random.rand(100)*100, np.random.rand(100)*100
b = plt.scatter(x,y,c=c,s=s,cmap='YlGnBu', alpha=0.3)
cbar = plt.colorbar(b)
label_list = []
for i in cbar.ax.get_yticklabels():
    a = int(i.get_text())
    label_list.append(a)
print label_list
plt.show()