I need to make a very simple drawing of a graph (NOT a chart but a graph, like in Dijkstra) with multiple nodes and multiple vertexes.
I once saw this guy using a tool where he wrote the data in notepad then compiled or something and then he had an svg to view in a browser - to me this should be the simplest tool to draw this graph in. Anyone know what this tool is? Or know a simple, open source/free tool to make simple graphes (need to be able to automatically rearrange it so it looks decent)
Cheers,
Try Graphviz:
http://www.graphviz.org/
Related
I am trying to find or build network graph for some data
I have seen disconnect.me graph visualization is great , if anyone tell me what they used to build this I would appropriate it.
an example of disconnect.me attached
enter image description here
For network graph i would prefer to use d3.js
Here is the link about it. The basic
http://christophergandrud.github.io/d3Network/
It's based on javascript, simple to implement and can be used over variety of backends.
Are there any beginner-friendly tutorials to display graphs in the way Knowledge graph has been done?
I have the data is JSON format presented from a graphdb
For eg:
The closest I have found so far is Gelphi. Which also can be integrated with unity to produce a 3d Graph like this one https://www.youtube.com/watch?v=h_arRCf73Kg.
Then there is https://cayley.io/
https://n0where.net/opengraphiti-data-visualization-engine/
There is also https://www.maana.io/knowledge-platform/platform-capabilities/#maana-knowledge-graph . However, i have not tried to use/download their platform.
https://en.wikipedia.org/wiki/Force-directed_graph_drawing
Finally, I am working myself on learning unity to build a simple GUI which a user can identify nodes and edges and entities easily and move them around. So instead of just reading from a data base, also write to it through a UI.
I am new to Qt and C++... Now, I am writing an application in Qt, in which I have to display an already generated .dot file inside my application. I tried the render function but did not work for me.. Can anyone out there help me in this regard..
Thanks
Had the same problem using Python. I came up with this solution:
svg_string = dot_graph.create_svg(prog='dot')
svgWidget = QtSvg.QSvgWidget()
svgWidget.load(QtCore.QByteArray(svg_string))
Guess you can do something similar in C++
Plotting directly a dot file requires to be able to display the nodes in the correct positions, and link them properly. This is done by very complicated engines and is not included in the dot file, which is simply a description of the graph. Maybe there are C++/Qt libraries that take dot files as an input, but I don't know them.
According to this topic (Graphviz: How to go from .dot to a graph?), you can easily transform a dot file into a png or svg file. If you want to display the rendered graph into your application, the easiest thing to do is to generate that png picture (from the shell or from your code) and to manipulate it from your program.
Take a look to QGraph. You will need much more work to make your graphs interactive.
Anyway, if you are new to Qt, even the simple display it's a steep introduction to graphics.
I have my own implementation, but I'm sorry it's not yet ready for publishing - I will do in a SWI-Prolog context...
I can't find any way to draw a force directed graph where the weighting of the edges affects their length.
Although the Neato layout engine for .Dot format claims to do this, it never seems to actually respond to the edge weight that I give to it.
Ideally, I'd like to do this in Javascript. I've been using the Javascript Infovis Toolkit, but this doesn't seem to have any means for setting a weighting.
Any suggestions gratefully received!
So infovis doesn't solve this problem at all well, and I can't see what's going on with gvis either. However, I have solved this problem using cytoscape.
Although I haven't used it, cytoscape does have a command line option, so you could potentially use it to create images dynamically.
So basically what I'm trying to do is make something like this:
http://store.kapit.biz/demo/treemap/prod/index.html#
I've searched long and hard to find a site that would show me some pseudocode (at least) or an algorithm as to how to implement this type of application. But everything I find are only applications that take in data and do all the work for me to create the graph. I need to actually create it for myself, just a simple one for now. Does anyone know where I can find this? What I want it to do is take data from a database and use it to create the treemap, then express it in a GUI like in the link above. If any specifics are needed I can provide it. I'm trying to do this in Flash Builder using Flex and using ColdFusion as the backend. Thanks!
Check this out
Axiis is a open source library based on Degrafa that enables you to make complex data visualizations.
Cheers