UserWarning: Warning: converting a masked element to nan.

[fbenghi]

Hello Peter,

I train the SOM and when I call view_component_planes(), the figures are completely blank an the console prints the following warnings:

matplotlib\image.py:405: UserWarning: Warning: converting a masked element to nan.
dv = (np.float64(self.norm.vmax) -
matplotlib\image.py:406: UserWarning: Warning: converting a masked element to nan.
np.float64(self.norm.vmin))
matplotlib\image.py:413: UserWarning: Warning: converting a masked element to nan.
a_min = np.float64(newmin)
matplotlib\image.py:418: UserWarning: Warning: converting a masked element to nan.
a_max = np.float64(newmax)
matplotlib\colors.py:916: UserWarning: Warning: converting a masked element to nan.
dtype = np.min_scalar_type(value)
\numpy\ma\core.py:716: UserWarning: Warning: converting a masked element to nan.
data = np.array(a, copy=False, subok=subok)

I followed the Planar Maps example, only changing the original dataset for my own data and even so it doesn't work. My dataset has 268 columns.

When I try to run it with only three columns (as in the example, it worked)

Is there any known issue related to the number of columns?

[peterwittek]

This should work, but bear in mind that you will have 268 component planes (assuming you mean features by columns).