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# Copyright (C) 2009 Jeremy S. Sanders
# Email: Jeremy Sanders <jeremy@jeremysanders.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
##############################################################################
"""An example embedding program. Veusz needs to be installed into
the Python path for this to work (use setup.py)
This animates a sin plot, then finishes
"""
import time
import numpy
import veusz.embed as veusz
# construct a Veusz embedded window
# many of these can be opened at any time
g = veusz.Embedded('window title', compatlevel=-1)
g.EnableToolbar()
# construct the plot
g.To( g.Add('page') )
g.To( g.Add('graph') )
g.Add('xy', marker='tiehorz', MarkerFill__color='green')
# this stops intelligent axis extending
g.Set('x/autoRange', 'exact')
# zoom out
g.Zoom(0.8)
# loop, changing the values of the x and y datasets
for i in range(10):
x = numpy.arange(0+i/2., 7.+i/2., 0.05)
y = numpy.sin(x)
g.SetData('x', x)
g.SetData('y', y)
# wait to animate the graph
time.sleep(2)
# let the user see the final result
print("Waiting for 10 seconds")
time.sleep(10)
print("Done!")
# close the window (this is not strictly necessary)
g.Close()
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