def save(self, fname=None):
"""Saves the plot.
@param fname: the filename to save to. It is ignored if the surface
of the plot is not an C{ImageSurface}.
"""
if self._is_dirty:
self.redraw()
if isinstance(self._surface, cairo.ImageSurface):
if fname is None and self._need_tmpfile:
with named_temporary_file(prefix="igraph", suffix=".png") as fname:
self._surface.write_to_png(fname)
return None
fname = fname or self._filename
if fname is None:
raise ValueError(
"no file name is known for the surface " + "and none given"
)
return self._surface.write_to_png(fname)
if fname is not None:
warn("filename is ignored for surfaces other than ImageSurface")
self._ctx.show_page()
self._surface.finish()
def show(self):
"""Saves the plot to a temporary file and shows it."""
if not isinstance(self._surface, cairo.ImageSurface):
sur = cairo.ImageSurface(cairo.FORMAT_ARGB32, int(self.bbox.width),
int(self.bbox.height))
ctx = cairo.Context(sur)
self.redraw(ctx)
else:
sur = self._surface
ctx = self._ctx
if self._is_dirty:
self.redraw(ctx)
with named_temporary_file(prefix="igraph", suffix=".png") as tmpfile:
sur.write_to_png(tmpfile)
config = Configuration.instance()
imgviewer = config["apps.image_viewer"]
if not imgviewer:
# No image viewer was given and none was detected. This
# should only happen on unknown platforms.
plat = platform.system()
raise NotImplementedError("showing plots is not implemented " + \
"on this platform: %s" % plat)
else:
os.system("%s %s" % (imgviewer, tmpfile))
if platform.system() == "Darwin" or self._windows_hacks:
# On Mac OS X and Windows, launched applications are likely to
# fork and give control back to Python immediately.
# Chances are that the temporary image file gets removed
# before the image viewer has a chance to open it, so
# we wait here a little bit. Yes, this is quite hackish :(
time.sleep(5)
def save(self, fname=None):
"""Saves the plot.
@param fname: the filename to save to. It is ignored if the surface
of the plot is not an C{ImageSurface}.
"""
if self._is_dirty:
self.redraw()
if isinstance(self._surface, cairo.ImageSurface):
if fname is None and self._need_tmpfile:
with named_temporary_file(prefix="igraph", suffix=".png") as fname:
self._surface.write_to_png(fname)
return None
fname = fname or self._filename
if fname is None:
raise ValueError("no file name is known for the surface " + \
"and none given")
return self._surface.write_to_png(fname)
if fname is not None:
warn("filename is ignored for surfaces other than ImageSurface")
self._ctx.show_page()
self._surface.finish()
def show(self):
"""Saves the plot to a temporary file and shows it."""
if not isinstance(self._surface, cairo.ImageSurface):
sur = cairo.ImageSurface(cairo.FORMAT_ARGB32,
int(self.bbox.width), int(self.bbox.height))
ctx = cairo.Context(sur)
self.redraw(ctx)
else:
sur = self._surface
ctx = self._ctx
if self._is_dirty:
self.redraw(ctx)
with named_temporary_file(prefix="igraph", suffix=".png") as tmpfile:
sur.write_to_png(tmpfile)
config = Configuration.instance()
imgviewer = config["apps.image_viewer"]
if not imgviewer:
# No image viewer was given and none was detected. This
# should only happen on unknown platforms.
plat = platform.system()
raise NotImplementedError("showing plots is not implemented " + \
"on this platform: %s" % plat)
else:
os.system("%s %s" % (imgviewer, tmpfile))
if platform.system() == "Darwin" or self._windows_hacks:
# On Mac OS X and Windows, launched applications are likely to
# fork and give control back to Python immediately.
# Chances are that the temporary image file gets removed
# before the image viewer has a chance to open it, so
# we wait here a little bit. Yes, this is quite hackish :(
time.sleep(5)
def pad2igraph(gid, url, format, delete=False, store="/pads/", debug=True):
print("pad2igraph", gid, url, format)
if format == 'csv':
try:
description = "imported from %s" % url
if url[0:4] != 'http':
url = "%s/%s.%s" % (store, url, format)
bot = BotaIgraph(directed=True)
botapad = Botapad(bot,
gid,
description,
delete=delete,
verbose=True,
debug=False)
botapad.parse(url, separator='auto', debug=debug)
graph = bot.get_igraph(weight_prop="weight")
if graph.vcount() == 0:
raise BotapadParseError(
url, "Botapad can't create a graph without nodes.", None)
return prepare_graph(gid, graph)
except BotapadParseError as e:
log = botapad.get_log()
e.log = log
raise e
except OSError as e:
raise BotapadURLError("No such File or Directory : %s " % url, url)
elif format in AVAILABLE_FORMATS:
content = None
if url[0:4] == 'http':
try:
url = convert_url(path)
if format in ('pickle', 'picklez'):
raise ValueError('no pickle from HTTP : %s ' % url)
print(" === Downloading %s %s\n" % (url, separator))
content = requests.get(url).text
except:
raise BotapadURLError("Can't download %s" % url, url)
else:
try:
print(" === reading %s/%s.%s" % (store, url, format))
content = open("%s/%s.%s" % (store, url, format), 'r').read()
except Exception as err:
raise BotapadURLError("Can't open file %s: %s" % (url, err),
url)
try:
with named_temporary_file(text=False) as tmpf:
outf = open(tmpf, "wt")
outf.write(content)
outf.close()
graph = igraph.read(tmpf, format=format)
return prepare_graph(gid, graph)
except Exception as err:
raise
raise BotapadError('%s : cannot read %s file at %s : %s' %
(gid, format, url, err))
else:
raise BotapadError('%s : Unsupported format %s file at %s ' %
(gid, format, url))
