when having a n-n relationship, is it possible to avoid the duplicated edges ? I am using the dagre layout:
layout: {
name: 'dagre',
rankDir: 'LR'
}
https://jsfiddle.net/me2p3ok9/
I would like a single edge connecting william to kate, then a single line going to george and charlotte, splitting in two. Here a picture for reference:
is this possible ?
I found it : the taxi-direction has to be set in the same direction of the dagre (in my case rightward)
see updated fiddle. now the challenge will be to center the 3 nodes underneath
Related
I have generated a PyVis graph but the graph output has just one problem and seems i can't find the reason and lost to no ideas anymore, i am not sure if it is a bug in PyVis drawing or I have made an error in generating the graph. Please advise, i am keen to know the cause here.
The PyVis graph I have generated contains 196 nodes and 367 edges exactly.
Of those 196 nodes, certain group of nodes are assigned with specific colours. About 42 nodes are assigned with colour "green" (using hex colour code #00ff00) and their shape has been changed to be a Square here for easy visual in an attempt to show my problem.
Of those 42 nodes, 13 of them are not showing green but instead show yellow as their colour, even though the source code still have those nodes colour as green (in hex code), however the visual shows yellow.
Below one line code is me trying to point to the source code line of one node and its color is set to #00ff00.
{"color": "#00ff00", "font": {"color": "white", "face": "Verdana", "size": 90}, "group": "gp_b", "id": "node__120", "label": "node__120", "level": 3, "shape": "square", "size": 500} ,
The graph's full html code example is provided here linked to jsfiddle, please see if you can help me locate the problem and a fix. Thanks in advance.
https://jsfiddle.net/shashi12345/2pf781ba/1/
Additional info:-
Basically, the graph is first created using Python. I used NetworkX version 2.8.5, added nodes and edges and their attributes, and then imported that into PyVis all within Python. PyVis version i am using is 0.2.1. And the graph is generated/saved as html file from PyVis.
The vis.js vis-network library requires groups to be defined in the options as descibred in the documentation here. All square nodes are added to a group named gp_b however this isn't present in the vis-network options. It is odd that this results in the behaviour being seen, but it could be resolved in a number of ways described below.
As per the PyVis documentation here the options passed to vis.js can be configured which as is needed for some options below.
Adding Group to Options
Adding the group gp_b to the options without any styling defined fixes the issue, for example:
var options = {
groups:{
useDefaultGroups: true,
gp_b:{ }
},
// Other options
}
Adding Group to Options With Styles
Alternatively the styling could be removed from the nodes and instead placed on the group, for example:
var options = {
groups:{
useDefaultGroups: true,
gp_b:{
color: '#00ff00'
}
},
// Other options
}
Removing Group from Nodes
The group could also be removed from the nodes, this way they are not expecing style information from the group and will just the color they have defined.
In order to make zigzag like edges I need to make some calculations and for that I need every node's position on the layout and I am having some trouble achieving that.
I am trying to get the node's position this way:
cy.$('#1891').position()
but no matter which id I use, I always get {x: 0, y: 0} values.
When I add an event like this:
cy.on('mouseover', 'node', function(evt){
var node = evt.target;
console.log(node.position());
});
I get every node's postion.
What would be the right way of getting every node's position from dagre layout?
I found the solution.
It was a silly mistake by me. I was trying to get the node's position before the layout was applied. Putting the cy.$('#1891').position(); after the layout.run(); did the trick.
I noticed that edge source or target arrows are missing when using the current unstable branch (2.7.0-unstable). The standard cy demo show below. Is this a known issue or has something changed?
The default stylesheet was updated in 2.7 to have greater performance by default. This means that haystack edges are used by default, and haystacks support only mid arrows.
If you set your edges in your stylesheet to beziers, then you can use source and target arrows, e.g.
edge {
curve-style: bezier;
target-arrow-shape: triangle;
}
Use like this.
cy.edges('edge').style({
"curve-style": "bezier",
"target-arrow-shape": "triangle"
})
just started playing with cytoscape.js and the breathfirst layout. Looks like it will be a great library. I want to be able to create a layered or tree like layout, ideally being able to pin nodes to a level. Is there any suggestions on the correct layout to use or how to achieve it.
Does anyone know how to use the roots: ? I tried like this "roots: 'xyz'" where xyz is the id of the root node in my diagram.
Also I was trying to lock my root node like below using the position and locked attribute which did not seem to work.
{ data: { id: "XYZ", name: "XYZ", weight: 100, faveColor: "#F5A45D", faveShape: "triangle" , position: {x: 150, y: 10}, locked: true}},
If I can't get it to work my fall back will be to use graphviz to calculate the layout and position the nodes manually in code.
You can only specify elements as roots. I'll add the ability to use selector strings for 2.2.4:
https://github.com/cytoscape/cytoscape.js/issues/498
As for the layout itself, nodes are positioned based on edge direction hierarchy, so you can only guarantee the position of the specified root nodes. The rest fall underneath in the hierarchy.
I want to be able to freeze/lock the last row in my grid so that it is always visible at the bottom while scrolling vertically, just like it is possible to do so for columns eg: http://docs.sencha.com/ext-js/4-1/#!/example/grid/locking-grid.html. Is there a way to do so in Ext?Id appreciate any help.
In the grid config, where you specify the plugin
features: [{
ftype: 'summary',
dock: 'top'
}]
I might came here in a huge delay, but after I couldn't find anything online I thought it could be good if I posted my findings..
As of extjs4.2 a config option named 'dock' does the job. So: dock: 'bottom' would be perfect for this, same goes for 'top'!