SampleSet Functions seem to show wrong results sometimes

[danwahl]

Description:

Multiplying a SampleSet by 1 results in a different distribution.

Steps to reproduce:

s = SampleSet.fromDist(1 to 2)

f(t) = s

g(t) = SampleSet.map(s, {|x| x * 1})

h(t) = s * 1

Expected behavior:

I'd expect f(t), g(t), and h(t) to be equivalent if SampleSets are "stored as a list of numbers" (as per documentation).

What I got instead:

f(t) and g(t) produce the same (correct) result, but h(t) does not:

Note that this only seems to happen in functions (e.g. i = s is the same as j = s * 1).

[OAGr]

Good find! That's pretty strange, not a good sign.

[leopoldaschenbrenner]

(Haven’t looked at this specific example, but sometimes I’ve found rendering off, even if the code result is correct—try eg corcheck(t)=f(t)/h(t) )

[OAGr]

Weird enough it seems to work most of the time, fine to me, it just seems like the rendered function is wrong.

We're going to be changing the rendering of functions in 0.4.0, maybe that will fix this.

s = SampleSet.fromDist(1 to 2)

f(t) = s

g(t) = SampleSet.map(s, {|x| x * 1})

h(t) = s * 1

n = 5
[f(n), g(n), h(n)]

[danwahl]

Good to know, thanks!

[berekuk]

This got fixed at some point, I don't really remember when and how.