[#194] get_color_touch()

[Didou09]

Main changes:

• get_color_touch() implemented

Issues:

Fixes, in devel, issue #194

Examples:

coll = ds.DataStock()

aa = np.exp(-(np.arange(50)[:, None]-25)**2/10**2 - (np.arange(50)[None, :]-25)**2/10**2)

dcolor = coll.get_color_touch(aa, dcolor={'foo': {'ind': (aa>0.3) & (np.arange(50)[None, :] > 25), 'color': 'r'}})

dcolor['meaning']
Out[60]: {(1.0, 0.0, 0.0): ['foo']}