Hi Jianhao,

You have to untick the “cap high values at box faces” to see surfaces bellow 0 threshold. You can find this option in Volume Viewer -> Features -> Surface and Mesh options at the bottom of the panel.

Best regards,
Gabor
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Gabor Papai
IGBMC
Integrated Structural Biology
1, rue Laurent Fries, Bp 10142
67404 Illkirch, France
Tel: +33-3-69485288

On 1 Dec 2017, at 4:43 , C.J. <biocjh@gmail.com> wrote:

Hi specialists,

I have a problem when adjusting the level of a map. If the level > 0, it seemed OK, but when it is less than 0, it showed a solid box. This is different from EMAN2. In EMAN2, the threshold less than 0 also works. I'm not sure whether the defining of level is the same as the threshold in EMAN2. Or is there any other way to show the density of a map as in EMAN2 with threshold less than 0? 
Some snapshots of the visualization in both programs are attached to the post.
Thank you!


regards,
Jianhao
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