1 files changed, 46 insertions, 0 deletions
diff --git a/examples/plotGL32.py b/examples/plotGL32.py
new file mode 100644
index 0000000..474fbd2
--- /dev/null
+++ b/examples/plotGL32.py
@@ -0,0 +1,46 @@
+import datetime as dt
+import numpy as np
+
+from PyQt5.QtWidgets import QApplication
+from silx.gui.plot import Plot1D
+
+if 1:
+    BACKEND = 'gl'  # this gives incorrect results
+else:
+    BACKEND = 'mpl'  # this works
+
+def makePlot1D():
+
+    # Make large value with a relatively small range by creating POSIX time stamps.
+    base = dt.datetime.today()
+    dates = [base - dt.timedelta(seconds=x) for x in range(0, 2500, 20)]
+
+    x = np.array([d.timestamp() for d in dates], dtype=np.float64)
+    np.random.seed(seed=1)
+    y = np.random.random(x.shape) * 12 - 3
+
+    print('x range', np.nanmin(x), np.nanmax(x))
+    print('y range', np.nanmin(y), np.nanmax(y))
+
+    plot1D = Plot1D(backend=BACKEND)
+    xAxis = plot1D.getXAxis()
+
+    curve = plot1D.addCurve(x=x, y=y, legend='curve', symbol='o', fill=True)
+
+    plot1D.addMarker(x=x[0], y=y[0], legend='marker', text='the marker', draggable=True)
+    plot1D.addYMarker(y[0], legend='hmarker', text='the H marker', draggable=True)
+    plot1D.addXMarker(x[0], legend='vmarker', text='the V marker', draggable=True)
+
+    plot1D.show()
+
+    return plot1D
+
+
+def main():
+    global app, plot
+    app = QApplication([])
+    plot = makePlot1D()
+    app.exec_()
+
+if __name__ == "__main__":
+    main()