def _create_pil_image(self, index_range):
"""
Create the PIL image for the new dendrogram.
@param row_range: the begin and end indices
"""
# create the stable subtree
begin, end = index_range
ordered_tips = self.root.ordered_tips()
leaves = [ordered_tips[i] for i in range(begin, end)]
cloned = mtree.leaves_to_subtree(self.root, leaves)
# create the dendrogram PIL image
self.nleaves = len(leaves)
blocksize = self.npixels / self.nleaves
breadth_gap = blocksize - 1
height_gap = 3
image_height = self.npixels
image_width = dendro.get_dendrogram_height(cloned, height_gap)
self.im = Image.new('RGBA', (image_width, image_height), (0, 0, 0, 0))
dendro.draw_dendrogram(cloned, breadth_gap, height_gap, self.on_draw_line)
def _create_pil_image(self, index_range):
"""
Create the PIL image for the new dendrogram.
@param row_range: the begin and end indices
"""
# create the stable subtree
begin, end = index_range
ordered_tips = self.root.ordered_tips()
leaves = [ordered_tips[i] for i in range(begin, end)]
cloned = mtree.leaves_to_subtree(self.root, leaves)
# create the dendrogram PIL image
breadth_gap = 0
height_gap = 3
image_height = self.npixels
image_width = dendro.get_dendrogram_height(cloned, height_gap)
self.im = Image.new('RGBA', (image_width, image_height), (0, 0, 0, 0))
dendro.draw_dendrogram(cloned, breadth_gap, height_gap, self.on_draw_line)
# it would be possible to draw this directly instead of flipping it
self.im = self.im.transpose(Image.ROTATE_90)
self.im = self.im.transpose(Image.FLIP_TOP_BOTTOM)