Question

我的目标是使用PYQTgraph将图例添加到GLViewWidget中。我想在其中添加3d堆叠条形图。

这是我的代码：

from pyqtgraph.Qt import QtCore, QtGui
import pyqtgraph.opengl as gl
import numpy as np
import pyqtgraph as pg

class NestedDict(dict):
    def __getitem__(self, item):
        if item not in self:
            self[item] = NestedDict()
        return super().__getitem__(item)

mainList = [['BM', 'Butterfly', 'E-shop', '1400'],
            ['BM', 'Butterfly', 'Fler', '2450'],
            ['BM', 'Butterfly', 'Holesovice', '2450'],
            ['Climbing presents', 'Ear-rings', 'Holesovice', '136'],
            ['Climbing presents', 'Other jewellery', 'E-shop', '160'],
            ['Climbing presents', 'Other jewellery', 'Other', '112'],
            ['PP', 'Skirts', 'Fler', '1380'],
            ['PP', 'Skirts', 'Holesovice', '1320'],
            ['PP', 'Skirts', 'Sashe', '450'],
            ['PP', 'Bags', 'E-shop', '2500'],
            ['PP', 'Skirts', 'E-shop', '5600'],
            ['PP', 'Dresses', 'Other', '6551'],
            ['Mar', 'Dresses', 'Holesovice', '1000'],
            ['Mar', 'Skirts', 'Holesovice', '3000'],
            ['Mar', 'Ear-rings', 'Holesovice', '2000']]

app = QtGui.QApplication([])
w = gl.GLViewWidget()
w.opts['distance'] = 50
w.showMaximized()
w.setWindowTitle('pyqtgraph example: GLViewWidget')

ax = gl.GLAxisItem()
ax.setSize(10,10,10)
w.addItem(ax)

labels = dict(zip(list(set([x[0] for x in mainList])), [2*i for i,j in enumerate(list(set([x[0] for x in mainList])))]))
shops = dict(zip(list(set([x[2] for x in mainList])), [2*i for i,j in enumerate(list(set([x[2] for x in mainList])))]))
items = dict(zip(list(set([x[1] for x in mainList])), [2*i for i,j in enumerate(list(set([x[1] for x in mainList])))]))

d = NestedDict()

for tag, item, source, qty in mainList:
    d[tag][source][item] = qty

legend = pg.LegendItem()

colors = {}
for i in items.keys():
    colors[i] = (round(5*np.random.rand()*np.random.rand(),2),
                 round(5*np.random.rand()*np.random.rand(),2),
                 round(5*np.random.rand()*np.random.rand(),2),
                 round(5*np.random.rand()*np.random.rand(),2))

for key, value in d.items():
    for nkey, nvalue in value.items():
        val = []
        for index, nvalue_ in enumerate(nvalue.values()):
            if index == 0:
                val.append(0)
            else:
                val.append(float(list(nvalue.values())[index-1])/1000)
            size = np.empty((1,1,3))
            size[...,0:2] = 1
            size[...,2] = float(list(nvalue.values())[index])/1000
            bg = gl.GLBarGraphItem(np.array([[[labels[key], shops[nkey], sum(val)]]]), size)
            bg.setColor(colors[list(nvalue.keys())[index]])
            w.addItem(bg)
##            legend.addItem(colors[list(nvalue.keys())[index]], list(nvalue.keys())[index])
##            w.addItem(legend)

if __name__ == '__main__':
    import sys
    if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
        QtGui.QApplication.instance().exec_()

注释行无法按需工作。我想有个传说项目将被添加（可能显示为没有重复项，并且在颜色字典中分配了适当的颜色）。

有人可以建议如何进行吗？谢谢

在PYQTgraph Python中将LegendItem添加到GLViewWidget

0 个答案: