def export_plot_png(parent):
# PNG export is not functional in chaco
# https://github.com/enthought/chaco/issues/295
dlg = wx.FileDialog(parent, "Export plot as PNG",
parent.config.get_path("PNG"), "",
"PNG file (*.png)|*.png",
wx.FD_SAVE | wx.FD_OVERWRITE_PROMPT)
if dlg.ShowModal() == wx.ID_OK:
path = dlg.GetPath().encode("utf-8")
if not path.endswith(".png"):
path += ".png"
parent.config.set_path(os.path.dirname(path), "PNG")
container = parent.PlotArea.mainplot.container
# get inner_boundary
p = container
dpi = 600
p.do_layout(force=True)
gc = ca.PlotGraphicsContext(tuple(p.outer_bounds), dpi=dpi)
# temporarily turn off the backbuffer for offscreen rendering
use_backbuffer = p.use_backbuffer
p.use_backbuffer = False
p.draw(gc)
#gc.render_component(p)
gc.save(path)
p.use_backbuffer = use_backbuffer
def main():
# Now we create a canvas of the appropriate size and ask it to render
# our component. (If we wanted to display this plot in a window, we
# would not need to create the graphics context ourselves; it would be
# created for us by the window.)
plot_gc = chaco.PlotGraphicsContext(myplot.outer_bounds)
plot_gc.render_component(myplot)
# Get the directory to save the image in
print('Please enter a path in which to place generated plots.')
print('Press <ENTER> to generate in the current directory.')
path = input('Path: ').strip()
path = os.path.expanduser(path)
if len(path) > 0 and not os.path.exists(path):
print('The given path does not exist.')
sys.exit()
# The file name to save the plot as
file_name = "tutorial1.png"
if not os.path.isabs(path):
print('Creating image: ' + os.path.join(os.getcwd(), path, file_name))
else:
print('Creating image: ' + os.path.join(path, file_name))
# Finally, we tell the graphics context to save itself to disk as an image.
plot_gc.save(os.path.join(path, file_name))
def export_image(self, fname, size=sz_plot_img):
"""Save plot as png image."""
# self.outer_bounds = list(size)
# self.do_layout(force=True)
gc = _chaco.PlotGraphicsContext(self.outer_bounds)
gc.render_component(self)
gc.save(fname, file_format=None)