I created a graph in yEd and I want to check if an edge has an attribute. For example some edges have a label but some dont. When I try to do this I get an an error: for n, nbrs in G.adjacency_ite...

Is it possible to refine or blur just the edges in an image with the white background ? I was thinking to get an edge mask of the image ( i already got it). After that use that mask to apply blur o...

I have already found edges of an image thanks to imageJ library. Now, I'd like to get an array which would contain these edges. There is a topic about it here but i couldn't comment and there was...

I would like to force dot displaying only vertical or horizontal edges between nodes. I have found a similar request with the post Family tree layout with Dot/GraphViz, but I am not dealing with t...

I have a NetworkX graph. I would like to know how to do edge contraction between multiple nodes. For example, if I wanted to contract X, Y and Z: _ node A _ _/ | \_ node X --- node Y --- node Z...

Is there a very short expression in iGraph 0.6 for python 2.7 to see if two vertices specified by index are connected by an edge or not? I found somewhere: are_connected(v1, v2) but in python...

I have a custom View with scroll implemented, but it seems like an ENDLESS scrolling over the image. Even when I find the edge of the image, it keeps scrolling to a blank background. I can't use a...

In a system I Have a list of nodes which are connected like in a normal graph. We know the whole system and all of their connections and we also have a startpoint. All my edges has a direction. No...

I'm stuck at the moment with the Java library Jung. I display vertices and edges, only I can not find any functions for vertex coloring that I need with the value of the vertices and not with the ...

Given a tree diagram like the Dendrogram example (source), how would one put labels on the edges? The JavaScript code to draw the edges looks like the next lines: var link = vis.selectAll("path.li...

I have a JSON feed data with lots of user relation in it such as: "subject_id = 1, object_id = 2, object = added subject_id = 1, object_id = 2, object = liked subject_id = 1, object_id = 3, objec...

Background I'm using Graphviz to create an Organizational Chart. Problem By default dot creates the following diagram: The desired output combines the edges so that they overlap, with elbow c...

I'm trying to use implement an "intelligent scissor" for an interactive image segmentation. Therefore, I have to create a directed graph from an image where each vertex represents a single pixel. E...

According to the book (Intro to Algorithm), in dfs, edges are classified as 4 kinds: Tree Edge, if in edge (u,v), v is first discovered, then (u, v) is a tree edge. Back Edge, if ......, v is dis...

Is there any way to force graphviz to always draw the nodes above edges even if the edge is drawn over (or preferably under) the node? So far I have tried ordering them and different layer options...

I want to create a graph (Graph Theory) where certain edges have a different colour to other edges, which would be used to highlight a path in the graph from one vertex to another. Here are some ...

digraph G { a -> b [ label = "foo" ]; a -> b [ label = "bar" ]; } This will create two edges between the 'a' and 'b' nodes. Is there a way to have only one edge (group them)?

I have a large array of vertices, some of them are edges, some are redundant (inside the shape) and I want to remove those. The simplest algorithm I could think of is checking one by one if they h...