MRG, BUG: Fix alpha for volumes#8663
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larsoner merged 1 commit intomne-tools:masterfrom Dec 15, 2020
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Awesome! LGTM. And don't worry about the conflicts, I'll fix these in #8335 👍
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Thanks for the quick review @GuillaumeFavelier ! |
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* upstream/master: (42 commits) MRG, ENH: Add DICS bias tests (mne-tools#8610) MRG, BUG, ENH: Add window option (mne-tools#8662) BUG: Fix alpha for volumes (mne-tools#8663) MRG, BUG: Fix bugs with envcorr (mne-tools#8658) MRG, ENH: Progressbar for csd_morlet (mne-tools#8608) Render is necessary now (mne-tools#8657) VIZ: Fix head size (mne-tools#8651) MRG, MAINT: bump sphinxcontrib-bitex version (mne-tools#8653) MRG, MAINT: Improve server env (mne-tools#8656) BUG: Mayavi center (mne-tools#8644) VIZ, ENH: allow show/hide annotations by label (mne-tools#8624) Add regression test for EEGLAB data with a chanlocs struct (mne-tools#8647) FIX: scalar_bar (mne-tools#8643) MRG: Small fix to tutorial; rename plot_events ordinate label to "Event id"; improve some SSP docstrings (mne-tools#8612) MRG, ENH: make plot alignment use defaults for colors (mne-tools#8553) BUG: Fix passing of channel type (mne-tools#8638) FIX: fixed loop over norm PSF/CTF options (mne-tools#8636) MRG, BUG: Pass kwargs (mne-tools#8630) DOC: Clearer error message (mne-tools#8631) BUG: Fix number of labels (mne-tools#8629) ...
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* upstream/master: (38 commits) MRG, ENH: Add DICS bias tests (mne-tools#8610) MRG, BUG, ENH: Add window option (mne-tools#8662) BUG: Fix alpha for volumes (mne-tools#8663) MRG, BUG: Fix bugs with envcorr (mne-tools#8658) MRG, ENH: Progressbar for csd_morlet (mne-tools#8608) Render is necessary now (mne-tools#8657) VIZ: Fix head size (mne-tools#8651) MRG, MAINT: bump sphinxcontrib-bitex version (mne-tools#8653) MRG, MAINT: Improve server env (mne-tools#8656) BUG: Mayavi center (mne-tools#8644) VIZ, ENH: allow show/hide annotations by label (mne-tools#8624) Add regression test for EEGLAB data with a chanlocs struct (mne-tools#8647) FIX: scalar_bar (mne-tools#8643) MRG: Small fix to tutorial; rename plot_events ordinate label to "Event id"; improve some SSP docstrings (mne-tools#8612) MRG, ENH: make plot alignment use defaults for colors (mne-tools#8553) BUG: Fix passing of channel type (mne-tools#8638) FIX: fixed loop over norm PSF/CTF options (mne-tools#8636) MRG, BUG: Pass kwargs (mne-tools#8630) DOC: Clearer error message (mne-tools#8631) BUG: Fix number of labels (mne-tools#8629) ...
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Some simple code to plot with
hot_rwithtransparent=Trueandalpha=1.(should yield an opaque volume where values are large) looks like this onmaster:And on this PR it's correct:
The key was the opacity and color transfer functions both need to yield floats between 0 and 1, so we just need to divide both by 255 (ctable is
np.int8) rather than doing whatever silly gymnastics we were doing before where the colors ranged from 0 to 255 and the alphas 0 to 1/255 (effectively).While I was messing around with this I noticed
add_datacould not usecolormap='mne'so I refactored ourget_cmapcalls. I also added a simple test totest_brainto make sure ourctableis correct.@GuillaumeFavelier can you take a quick look? Not sure if this or #8335 should go in first, but I think they're going to conflict.