def get_coordinates(concept_system):
import tempfile
import os
import fca
temp_dot_path = tempfile.mktemp()
temp_plain_path = tempfile.mktemp()
coordinates = {}
from fca.readwrite import uwrite_dot
uwrite_dot(concept_system, temp_dot_path)
try:
dot_path = os.path.join(graphviz_path, "dot")
subprocess.call([dot_path, "-Tplain",
"-o{0}".format(temp_plain_path),
temp_dot_path])
except:
dot_path = os.path.join(graphviz_path, "dot.exe")
subprocess.call([dot_path, "-Tplain",
"-o{0}".format(temp_plain_path),
temp_dot_path])
import codecs
plain_dot_file = codecs.open(temp_plain_path, "r", "utf-8")
for line in plain_dot_file:
spl_line = line.split(" ")
if spl_line[0] == "graph":
canvas_width = float(spl_line[2])
canvas_height = float(spl_line[3])
elif spl_line[0] == "node":
i = int(spl_line[1][1:])
xy = (float(spl_line[2])/canvas_width, float(spl_line[3])/canvas_height)
coordinates[concept_system[i]] = xy
plain_dot_file.close()
# now clean for ourselves
os.unlink(temp_plain_path)
os.unlink(temp_dot_path)
return coordinates
def save_lattice(cls, group):
temp_dot_path = tempfile.mktemp()
dir_path = os.path.join(MEDIA_ROOT, "img", group.slug)
cxt = cls._explorations[group].db._cxt._get_self_as_fca_context(pk=False)
concept_system = fca.ConceptLattice(cxt)
uwrite_dot(concept_system, temp_dot_path, full=True)
if not os.path.exists(dir_path):
os.makedirs(dir_path)
svg_path = os.path.join(dir_path, "lattice.svg")
try:
subprocess.call(["dot", "-Tsvg",
"-o{0}".format(svg_path),
temp_dot_path])
except:
# TODO: workaround for windows systems
pass
def save_lattice(cls, group):
temp_dot_path = tempfile.mktemp()
dir_path = os.path.join(MEDIA_ROOT, "img", group.slug)
cxt = cls._explorations[group].db._cxt._get_self_as_fca_context(
pk=False)
concept_system = fca.ConceptLattice(cxt)
uwrite_dot(concept_system, temp_dot_path, full=True)
if not os.path.exists(dir_path):
os.makedirs(dir_path)
svg_path = os.path.join(dir_path, "lattice.svg")
try:
subprocess.call(
["dot", "-Tsvg", "-o{0}".format(svg_path), temp_dot_path])
except:
# TODO: workaround for windows systems
pass
