the lower limits setting for 3D selected subset doesn't work

glue-viz / glue-vispy-viewers

3-d data viewers for glue based on VisPy

http://glueviz.org/en/stable/whatsnew/experimental_3d.html#experimental-3d

BSD 2-Clause "Simplified" License

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the lower limits setting for 3D selected subset doesn't work #168

Open PennyQ opened 8 years ago

PennyQ commented 8 years ago

As above, it's stuck at value 0 and can't be changed :)

astrofrog commented 8 years ago

Not a bug - it's deliberate to make sure that areas not selected are always not shown. We could allow it to be positive though, but we can't allow it to be negative.

PennyQ commented 8 years ago

@astrofrog then why for loaded dataset (I mean not subset), why could it be negative and there are some parts with value between negative to zero got shown in 3D volume?

astrofrog commented 8 years ago

@PennyQ - good point - maybe in that case, parts that are not in the subset should be set to e.g. -inf to make sure they never show up. I need to figure out if there is a way we can make sure a region never shows up.