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Improve ScatterPlotItem

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Slightly faster and more memory efficient, correct python 3 bug
This commit is contained in:
Guillaume Poulin 2013-09-23 00:45:55 +08:00
parent 26b84693a8
commit f5ee45ac28
1 changed files with 6 additions and 2 deletions
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8
pyqtgraph/graphicsItems/ScatterPlotItem.py
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@ -4,6 +4,10 @@ import pyqtgraph.functions as fn
from .GraphicsItem import GraphicsItem from .GraphicsItem import GraphicsItem
from .GraphicsObject import GraphicsObject from .GraphicsObject import GraphicsObject
from itertools import starmap from itertools import starmap
try:
from itertools import imap
except ImportError:
imap = map
import numpy as np import numpy as np
import scipy.stats import scipy.stats
import weakref import weakref
@ -702,8 +706,8 @@ class ScatterPlotItem(GraphicsObject):
# rect = QtCore.QRectF(y, x, h, w) # rect = QtCore.QRectF(y, x, h, w)
# self.fragments.append(QtGui.QPainter.PixmapFragment.create(pos, rect)) # self.fragments.append(QtGui.QPainter.PixmapFragment.create(pos, rect))
rect = starmap(QtCore.QRectF, self.data['fragCoords']) rect = starmap(QtCore.QRectF, self.data['fragCoords'])
pos = map(QtCore.QPointF, pts[0,:], pts[1,:]) pos = imap(QtCore.QPointF, pts[0,:], pts[1,:])
self.fragments = map(QtGui.QPainter.PixmapFragment.create, pos, rect) self.fragments = list(imap(QtGui.QPainter.PixmapFragment.create, pos, rect))
def setExportMode(self, *args, **kwds): def setExportMode(self, *args, **kwds):
GraphicsObject.setExportMode(self, *args, **kwds) GraphicsObject.setExportMode(self, *args, **kwds)