As you know, in Softimage all scalar (aka floating point) values are displayed with 3 (or sometimes 4) decimal places. For example: 0.333 instead of 0.33333333333…

One way to display the attribute value with greater precision is to use the Log Values node, and multiply the attribute value by some power of 10 (to get more digits). Hat tip to Leonard Koch for that suggestion.

The above Log Values outputs this:

# INFO : 4000 - elt 0: 3333333504.000000

You could also use scripting. But note how I get 0 for the attribute named _tmp, even though it is clearly set to 0.3333333333333 in the ICE graph.

x = si.Selection(0)
y = x.ActivePrimitive.Geometry.ICEAttributes( "tmp" )
if y.IsDefined:
	print "tmp = %.10f" % y.DataArray[0]
	
y = x.ActivePrimitive.Geometry.ICEAttributes( "_tmp" )
if y.IsDefined:
	print "_tmp = %.10f" % y.DataArray[0]

# tmp = 0.3333333433
# _tmp = 0.0000000000

Finally, here’s a quick hack using a proxy parameter and the SDK explorer: