def _get_continuous_colors(self, c_data):
palette = self.master.get_palette()
bins = self.master.get_binning().thresholds
self.palette = BinnedContinuousPalette.from_palette(palette, bins)
rgb = self.palette.values_to_colors(c_data)
rgba = np.hstack(
[rgb, np.full((len(rgb), 1), self.alpha_value, dtype=np.ubyte)])
return [QBrush(QColor(*col)) for col in rgba]
def set_color_bins(self):
if self.attr_color is None:
self.thresholds = self.bin_labels = self.colors = None
elif self.attr_color.is_discrete:
self.thresholds = self.bin_labels = None
self.colors = self.attr_color.palette
else:
col = self.data.get_column_view(self.attr_color)[0].astype(float)
if self.attr_color.is_time:
binning = time_binnings(col, min_bins=4)[-1]
else:
binning = decimal_binnings(col, min_bins=4)[-1]
self.thresholds = binning.thresholds[1:-1]
self.bin_labels = (binning.labels[1:-1], binning.short_labels[1:-1])
palette = BinnedContinuousPalette.from_palette(
self.attr_color.palette, binning.thresholds)
self.colors = palette
def set_color_bins(self):
self.Warning.no_defined_colors.clear()
if self.attr_color is None:
self.thresholds = self.bin_labels = self.colors = None
return
if self.attr_color.is_discrete:
self.thresholds = self.bin_labels = None
self.colors = self.attr_color.palette
return
col = self.data.get_column_view(self.attr_color)[0].astype(float)
col = col[np.isfinite(col)]
if not col.size:
self.Warning.no_defined_colors(self.attr_color)
self.thresholds = self.bin_labels = self.colors = None
return
if self.attr_color.is_time:
binning = time_binnings(col, min_bins=4)[-1]
else:
binning = decimal_binnings(col, min_bins=4)[-1]
self.thresholds = binning.thresholds[1:-1]
self.bin_labels = (binning.labels[1:-1], binning.short_labels[1:-1])
if not self.bin_labels[0] and binning.labels:
# Nan's are already filtered out, but it doesn't hurt much
# to use nanmax/nanmin
if np.nanmin(col) == np.nanmax(col):
# Handle a degenerate case with a single value
# Use the second threshold (because value must be smaller),
# but the first threshold as label (because that's the
# actual value in the data.
self.thresholds = binning.thresholds[1:]
self.bin_labels = (binning.labels[:1],
binning.short_labels[:1])
palette = BinnedContinuousPalette.from_palette(self.attr_color.palette,
binning.thresholds)
self.colors = palette