logging added

network_extensions/igraphx/graph_plotly.py

@@ -5,7 +5,8 @@ Some helpers to plot the networks with plotly (https://plot.ly)
 import plotly.graph_objs as go
 import numpy as np
 import igraph
-
+import logging
+logger = logging.getLogger(__name__)
 def \
         createSizeFromFunc(gr: igraph.Graph, func: str = "betweenness", min_size: float = 2, scale_size: float = 10) -> np.array:
     """
@@ -27,7 +28,7 @@ def \
     return sizes
 
 
-def createFigGraph(gr: igraph.Graph, title: str, hover_field:str = "label", sizes: object = 2, typ_field: str = None, pos: list = None) -> go.Figure:
+def createFigGraph(gr: igraph.Graph, title: str = "", hover_field:str = "label", sizes: object = 2, typ_field: str = None, pos: list = None) -> go.Figure:
     """
     create figure for plotly
 
@@ -44,7 +45,9 @@ def createFigGraph(gr: igraph.Graph, title: str, hover_field:str = "label", size
         typs = set(gr.vs[typ_field])
         Zn =gr.vs[typ_field]
 
+
     if not pos:
+        logging.debug("create positions")
         pos = gr.layout_fruchterman_reingold()
     Xn = [k[0] for k in pos.coords]  # x-coordinates of nodes
     Yn = [k[1] for k in pos.coords]  # x-coordinates of nodes
@@ -54,6 +57,7 @@ def createFigGraph(gr: igraph.Graph, title: str, hover_field:str = "label", size
     Xe = []
     Ye = []
     Ze = []
+    logging.debug("create edges")
     for e in gr.es:
         Xe += [pos.coords[e.source][0], pos.coords[e.target][0], None]  # x-coordinates of edge ends
         Ye += [pos.coords[e.source][1], pos.coords[e.target][1], None]