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#!/usr/bin/env python3
#
# A simple PLplot/PyQt example
#
# Copyright (C) 2016 Hazen Babcock
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PLplot is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
import sys
import numpy
import plplot_python_start
import plplot
# An indirect side effect of this import statement is a consistent set
# of Qt4 libraries are loaded (e.g., if those are from some downloaded
# non-system version in a non-standard location).
import plplot_pyqt5
# This import statement must go after the one above to insure a
# consistent set of Qt4 libraries are used for the case of the
# downloaded, non-standard location of those libraries.
from PyQt5 import QtCore, QtGui, QtWidgets
class QPlot(QtWidgets.QMainWindow):
def __init__(self):
QtWidgets.QMainWindow.__init__(self, None)
# UI setup
self.curvesAct = QtWidgets.QAction("Curves", self)
self.histogramAct = QtWidgets.QAction("Histogram", self)
self.interactiveAct = QtWidgets.QAction("Interactive Selection", self)
self.plotMenu = self.menuBar().addMenu("Plot")
self.plotMenu.addAction(self.curvesAct)
self.plotMenu.addAction(self.histogramAct)
self.plotMenu.addAction(self.interactiveAct)
self.curvesAct.triggered.connect(self.plotCurves)
self.histogramAct.triggered.connect(self.plotHistogram)
self.interactiveAct.triggered.connect(self.interactive)
# PLplot setup
self.plot = plplot_pyqt5.QtExtWidget(842, 595, self)
self.setCentralWidget(self.plot)
plplot_pyqt5.plsetqtdev(self.plot)
plplot.plsdev("extqt")
plplot.plinit()
self.resize(600,600)
plplot.pladv(0)
def cleanup(self):
plplot.plend()
plplot_pyqt5.plfreeqtdev()
def paintEvent(self, event):
# plplot.pladv(0)
# plplot.plenv(0, 10, 0, 10, 0, 0)
# plplot.pllab("X", "Y", "Y vs X")
self.plot.show()
def plotCurves(self):
self.plot.clearWidget()
# 1st plot
indexes = numpy.arange(0, 360.1, 1.0)
sine = numpy.sin(indexes * 3.14159 / 180.0)
cosine = numpy.cos(indexes * 3.14159 / 180.0)
plplot.pladv(0)
plplot.plvpor(0.05, 0.95, 0.05, 0.45)
plplot.plwind(0.0, 360.0, -1.2, 1.2)
plplot.plcol0(2)
plplot.plbox("bcnst", 0., 0, "bcnst", 0., 0)
plplot.plcol0(1)
plplot.plwidth(2)
plplot.plline(indexes, sine)
plplot.plcol0(3)
plplot.plwidth(1)
plplot.pllsty(2)
plplot.plline(indexes, cosine)
plplot.pllsty(1)
plplot.plcol0(2)
plplot.plmtex("t", 1., 0.5, 0.5, "Sines")
# 2nd plot
indexes = numpy.arange(-1.0, 1.0, 0.01)
square = indexes * indexes
cubic = square * indexes
plplot.plvpor(0.05, 0.95, 0.55, 0.95)
plplot.plwind(-1., 1., -1., 1.)
plplot.plcol0(2)
plplot.plbox("bcnst", 0., 0, "bcnst", 0., 0)
plplot.plcol0(1)
plplot.plwidth(2)
plplot.plline(indexes, square)
plplot.plcol0(3)
plplot.plwidth(1)
plplot.pllsty(2)
plplot.plline(indexes, cubic)
plplot.pllsty(1)
plplot.plcol0(2)
plplot.plmtex("t", 1., 0.5, 0.5, "Square & Cubic")
self.update()
def plotHistogram(self):
def plfbox(x0, y0):
x = numpy.array([x0, x0, x0 + 1.0, x0 + 1.0])
y = numpy.array([0.0, y0, y0, 0.0])
plplot.plfill(x, y)
plplot.plcol0(1)
plplot.pllsty(1)
plplot.plline(x, y)
self.plot.clearWidget();
y0 = numpy.array([5, 15, 12, 24, 28, 30, 20, 8, 12, 3])
pos = numpy.array([0.0, 0.25, 0.5, 0.75, 1.0])
red = numpy.array([0.0, 0.25, 0.5, 1.0, 1.0])
green = numpy.array([1.0, 0.5, 0.5, 0.5, 1.0])
blue = numpy.array([1.0, 1.0, 0.5, 0.25, 0.0])
plplot.pladv(0)
plplot.plvsta()
plplot.plcol0(2)
plplot.plwind(1980.0, 1990.0, 0.0, 35.0)
plplot.plbox("bc", 1.0, 0, "bcnv", 10.0, 0)
plplot.plcol0(2)
plplot.pllab("Year", "Widget Sales (millions)", "#frPLplot Example 12")
plplot.plscmap1l(1,pos,red,green,blue)
for i in range(10):
plplot.plcol1(i/9.0)
plplot.plpsty(0)
plfbox((1980. + i), y0[i])
string = "%.0f" % (y0[i])
plplot.plptex((1980. + i + .5), (y0[i] + 1.), 1.0, 0.0, .5, string)
string = "%d" % (1980 + i)
plplot.plmtex("b", 1.0, ((i + 1) * .1 - .05), 0.5, string)
self.update()
def interactive(self):
[mx, my] = self.plot.captureMousePlotCoords()
msg_box = QtWidgets.QMessageBox()
msg_box.setText("Selection: (%f, %f)" % (mx, my))
msg_box.exec_()
app = QtWidgets.QApplication(sys.argv)
plot = QPlot()
plot.show()
app.exec_()
plot.cleanup()
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