ImportError: cannot import name LineModel

Dear all, I am trying to run the ransac model estimation example given on the documentation. However, Python cannot load the line model: Traceback (most recent call last): File "plot_ransac.py", line 13, in <module> from skimage.measure import LineModel, ransac ImportError: cannot import name LineModel I am using the latest stable version 0.8.2 in Ubuntu. Are the LineModel and ransac routines available on the development version only? Thank you very much in advance. Regards, Fabián