import pyqtgraph as pg
from PyQt4 import QtGui
import numpy as np
import sys
def main():
app = QtGui.QApplication(sys.argv)
widg = QtGui.QWidget()
widg.move(100, 100)
pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')
pgWidg = pg.GraphicsLayoutWidget()
pgWidg.resize(750, 250)
graph1 = pgWidg.addPlot(row=1, col=1)
graph2 = pgWidg.addPlot(row=1, col=2)
curve1 = graph1.plot(y=np.sin(np.linspace(1, 21, 1000)), pen='k')
curve2 = graph2.plot(y=np.sin(np.linspace(1, 21, 1000)), pen='k')
graph1.addItem(curve1)
graph2.addItem(curve2)
graph1.setMouseEnabled(x=False, y=True)
graph2.setMouseEnabled(x=False, y=True)
graph1Text = pg.TextItem(text = 'A1', color=(0, 0, 0))
graph1.addItem(graph1Text)
graph1Text.setPos(150, 1)
legend = graph2.addLegend()
style = pg.PlotDataItem(pen='w')
legend.addItem(style, 'A2')
grid = QtGui.QGridLayout()
grid.addWidget(pgWidg, 0,0)
widg.setLayout(grid)
widg.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
This example code illustrates the problem. On the lefthand graph, scaling
the y-axis causes the text to move whereas on the righthand graph the
legend stays in a constant position as you scale. I would like the position
of the textItem to be defined like the legend position, in a constant
position relative to the graph window. Alternatively if someone knows how
to change the format of the legend and update the text that would also
work, but from my reading of the documentation this is not possible.
On Saturday, June 24, 2017 at 6:40:50 PM UTC-4, wot wrote:
>
> I would like a TextItem that maintains a constant position on the graph
> while scaling, essentially the same functionality as legend only a TextItem.
> Cannot figure out how to do this. Any suggestions welcome.
>
>
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