Source code for pyqtgraph.graphicsItems.MultiPlotItem

# -*- coding: utf-8 -*-
""" -  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
from ..metaarray import *

__all__ = ['MultiPlotItem']

[docs]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 = []
[docs] 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()