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
|
"""
MultiPlotItem.py - Graphics item used for displaying an array of PlotItems
Copyright 2010 Luke Campagnola
Distributed under MIT/X11 license. See license.txt for more information.
"""
from . import GraphicsLayout
__all__ = ['MultiPlotItem']
class MultiPlotItem(GraphicsLayout.GraphicsLayout):
"""
:class:`~pyqtgraph.GraphicsLayout` that automatically generates a grid of
plots from a MetaArray.
.. seealso:: :class:`~pyqtgraph.MultiPlotWidget`: Widget containing a MultiPlotItem
"""
def __init__(self, *args, **kwds):
GraphicsLayout.GraphicsLayout.__init__(self, *args, **kwds)
self.plots = []
def plot(self, data, **plotArgs):
"""Plot the data from a MetaArray with each array column as a separate
:class:`~pyqtgraph.PlotItem`.
Axis labels are automatically extracted from the array info.
``plotArgs`` are passed to :meth:`PlotItem.plot
<pyqtgraph.PlotItem.plot>`.
"""
#self.layout.clear()
if hasattr(data, 'implements') and data.implements('MetaArray'):
if data.ndim != 2:
raise Exception("MultiPlot currently only accepts 2D MetaArray.")
ic = data.infoCopy()
ax = 0
for i in [0, 1]:
if 'cols' in ic[i]:
ax = i
break
#print "Plotting using axis %d as columns (%d plots)" % (ax, data.shape[ax])
for i in range(data.shape[ax]):
pi = self.addPlot()
self.nextRow()
sl = [slice(None)] * 2
sl[ax] = i
pi.plot(data[tuple(sl)], **plotArgs)
#self.layout.addItem(pi, i, 0)
self.plots.append((pi, i, 0))
info = ic[ax]['cols'][i]
title = info.get('title', info.get('name', None))
units = info.get('units', None)
pi.setLabel('left', text=title, units=units)
info = ic[1-ax]
title = info.get('title', info.get('name', None))
units = info.get('units', None)
pi.setLabel('bottom', text=title, units=units)
else:
raise Exception("Data type %s not (yet?) supported for MultiPlot." % type(data))
def close(self):
for p in self.plots:
p[0].close()
self.plots = None
self.clear()
|
