Graph Fourier Transform Interactive GUI

General Information

This website provides information about the software Graph Fourier Transform Interactive GUI which is developed in Matlab

Download

Click here to download the GFT-IGUI

Installation

• The code is written in Matlab(c) version R2014b.
• To install the code, simply unpack the directory in a Matlab folder.

Getting Started

• Before running GFT-IGUI you need to be sure you have installed the GSP ToolBox.
• After that you need to do the following:
  • create a graph structure using the GSP ToolBox
  • create a plot parameters structure
  • create a signal to be analyzed, and
  • call the GUI

1 Sensor network example

  % Creating a graph structure using the GSP ToolBox
  G = gsp_sensor(10, param);
  
  % Defining plot parameters
  paramplot.show_edges = 1;
  paramplot.bar = 1;
  paramplot.vertex_size = 3;
  paramplot.cp = [0 0 0];
  
  % Defining a signal of the graph G to be analyzed by the GFT
  N = 10;
  f = rand(N,1)*20 + 60 + sin([1:N]'/5)*20;
  
  % Call the GUI
  GFT_gui(G, f, paramplot)

2 Community graph example

  % Creating the Graph
  N = 12;
  param.Nc = 3;
  G = gsp_community(N);
  
  % Creating plot parameters
  paramplot.show_edges = 1;
  
  % Creating the signal
  f = rand(N,1);
  
  % Call the GUI
  GFT_gui(G, f, paramplot);

Contact

• Comments, questions or concerns should be directed to: Diego R. C. Silva (diego at ect dot ufrn dot br)

Acknowledgements

• This work was supported by CNPq