/usr/lib/python2.7/dist-packages/pyqtgraph/graphicsItems/ErrorBarItem.py is in python-pyqtgraph 0.9.10-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | from ..Qt import QtGui, QtCore
from .GraphicsObject import GraphicsObject
from .. import getConfigOption
from .. import functions as fn
__all__ = ['ErrorBarItem']
class ErrorBarItem(GraphicsObject):
def __init__(self, **opts):
"""
All keyword arguments are passed to setData().
"""
GraphicsObject.__init__(self)
self.opts = dict(
x=None,
y=None,
height=None,
width=None,
top=None,
bottom=None,
left=None,
right=None,
beam=None,
pen=None
)
self.setData(**opts)
def setData(self, **opts):
"""
Update the data in the item. All arguments are optional.
Valid keyword options are:
x, y, height, width, top, bottom, left, right, beam, pen
* x and y must be numpy arrays specifying the coordinates of data points.
* height, width, top, bottom, left, right, and beam may be numpy arrays,
single values, or None to disable. All values should be positive.
* top, bottom, left, and right specify the lengths of bars extending
in each direction.
* If height is specified, it overrides top and bottom.
* If width is specified, it overrides left and right.
* beam specifies the width of the beam at the end of each bar.
* pen may be any single argument accepted by pg.mkPen().
This method was added in version 0.9.9. For prior versions, use setOpts.
"""
self.opts.update(opts)
self.path = None
self.update()
self.prepareGeometryChange()
self.informViewBoundsChanged()
def setOpts(self, **opts):
# for backward compatibility
self.setData(**opts)
def drawPath(self):
p = QtGui.QPainterPath()
x, y = self.opts['x'], self.opts['y']
if x is None or y is None:
return
beam = self.opts['beam']
height, top, bottom = self.opts['height'], self.opts['top'], self.opts['bottom']
if height is not None or top is not None or bottom is not None:
## draw vertical error bars
if height is not None:
y1 = y - height/2.
y2 = y + height/2.
else:
if bottom is None:
y1 = y
else:
y1 = y - bottom
if top is None:
y2 = y
else:
y2 = y + top
for i in range(len(x)):
p.moveTo(x[i], y1[i])
p.lineTo(x[i], y2[i])
if beam is not None and beam > 0:
x1 = x - beam/2.
x2 = x + beam/2.
if height is not None or top is not None:
for i in range(len(x)):
p.moveTo(x1[i], y2[i])
p.lineTo(x2[i], y2[i])
if height is not None or bottom is not None:
for i in range(len(x)):
p.moveTo(x1[i], y1[i])
p.lineTo(x2[i], y1[i])
width, right, left = self.opts['width'], self.opts['right'], self.opts['left']
if width is not None or right is not None or left is not None:
## draw vertical error bars
if width is not None:
x1 = x - width/2.
x2 = x + width/2.
else:
if left is None:
x1 = x
else:
x1 = x - left
if right is None:
x2 = x
else:
x2 = x + right
for i in range(len(x)):
p.moveTo(x1[i], y[i])
p.lineTo(x2[i], y[i])
if beam is not None and beam > 0:
y1 = y - beam/2.
y2 = y + beam/2.
if width is not None or right is not None:
for i in range(len(x)):
p.moveTo(x2[i], y1[i])
p.lineTo(x2[i], y2[i])
if width is not None or left is not None:
for i in range(len(x)):
p.moveTo(x1[i], y1[i])
p.lineTo(x1[i], y2[i])
self.path = p
self.prepareGeometryChange()
def paint(self, p, *args):
if self.path is None:
self.drawPath()
pen = self.opts['pen']
if pen is None:
pen = getConfigOption('foreground')
p.setPen(fn.mkPen(pen))
p.drawPath(self.path)
def boundingRect(self):
if self.path is None:
self.drawPath()
return self.path.boundingRect()
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