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+#!/usr/bin/env python
+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2016-2017 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ###########################################################################*/
+"""
+Example to show the use of `ImageView` widget. It can be used to open an EDF
+or TIFF file from the shell command line.
+
+To view an image file with the current installed silx library:
+``python examples/imageview.py <file to open>``
+To get help:
+``python examples/imageview.py -h``
+
+For developers with a git clone you can use it with the bootstrap
+To view an image file with the current installed silx library:
+
+``./bootstrap.py python examples/imageview.py <file to open>``
+"""
+from __future__ import division
+
+__authors__ = ["T. Vincent"]
+__license__ = "MIT"
+__date__ = "18/10/2016"
+
+import logging
+from silx.gui.plot.ImageView import ImageViewMainWindow
+from silx.gui import qt
+import numpy
+
+logger = logging.getLogger(__name__)
+
+
+def main(argv=None):
+    """Display an image from a file in an :class:`ImageView` widget.
+
+    :param argv: list of command line arguments or None (the default)
+                 to use sys.argv.
+    :type argv: list of str
+    :return: Exit status code
+    :rtype: int
+    :raises IOError: if no image can be loaded from the file
+    """
+    import argparse
+    import os.path
+
+    from silx.third_party.EdfFile import EdfFile
+
+    # Command-line arguments
+    parser = argparse.ArgumentParser(
+        description='Browse the images of an EDF file.')
+    parser.add_argument(
+        '-o', '--origin', nargs=2,
+        type=float, default=(0., 0.),
+        help="""Coordinates of the origin of the image: (x, y).
+        Default: 0., 0.""")
+    parser.add_argument(
+        '-s', '--scale', nargs=2,
+        type=float, default=(1., 1.),
+        help="""Scale factors applied to the image: (sx, sy).
+        Default: 1., 1.""")
+    parser.add_argument(
+        '-l', '--log', action="store_true",
+        help="Use logarithm normalization for colormap, default: Linear.")
+    parser.add_argument(
+        'filename', nargs='?',
+        help='EDF filename of the image to open')
+    args = parser.parse_args(args=argv)
+
+    # Open the input file
+    if not args.filename:
+        logger.warning('No image file provided, displaying dummy data')
+        edfFile = None
+        data = numpy.arange(1024 * 1024.).reshape(1024, 1024)
+        nbFrames = 1
+
+    else:
+        if not os.path.isfile(args.filename):
+            raise IOError('No input file: %s' % args.filename)
+
+        else:
+            edfFile = EdfFile(args.filename)
+            data = edfFile.GetData(0)
+
+            nbFrames = edfFile.GetNumImages()
+            if nbFrames == 0:
+                raise IOError(
+                    'Cannot read image(s) from file: %s' % args.filename)
+
+    global app  # QApplication must be global to avoid seg fault on quit
+    app = qt.QApplication([])
+    sys.excepthook = qt.exceptionHandler
+
+    mainWindow = ImageViewMainWindow()
+    mainWindow.setAttribute(qt.Qt.WA_DeleteOnClose)
+
+    if args.log:  # Use log normalization by default
+        colormap = mainWindow.getDefaultColormap()
+        colormap['normalization'] = 'log'
+        mainWindow.setColormap(colormap)
+
+    mainWindow.setImage(data,
+                        origin=args.origin,
+                        scale=args.scale)
+
+    if edfFile is not None and nbFrames > 1:
+        # Add a toolbar for multi-frame EDF support
+        multiFrameToolbar = qt.QToolBar('Multi-frame')
+        multiFrameToolbar.addWidget(qt.QLabel(
+            'Frame [0-%d]:' % (nbFrames - 1)))
+
+        spinBox = qt.QSpinBox()
+        spinBox.setRange(0, nbFrames - 1)
+
+        def updateImage(index):
+            mainWindow.setImage(edfFile.GetData(index),
+                                origin=args.origin,
+                                scale=args.scale,
+                                reset=False)
+        spinBox.valueChanged[int].connect(updateImage)
+        multiFrameToolbar.addWidget(spinBox)
+
+        mainWindow.addToolBar(multiFrameToolbar)
+
+    mainWindow.show()
+    mainWindow.setFocus(qt.Qt.OtherFocusReason)
+
+    return app.exec_()
+
+
+if __name__ == "__main__":
+    import sys
+    sys.exit(main(argv=sys.argv[1:]))