Displaying Graphs



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Displaying Graphs

 

Once a simulation has completed, the user can view the generated data in a graph displayed on the screen. Each graph contains a statistic for a given cover type based on the output map generated. The supported statistics include:

  1. Proportion of Landscape,
  2. Area of Covertype,
  3. Edge/Area Ratio,
  4. Edge of Covertype Pairs,
  5. Number of Patches,
  6. Mean Patch Size,
  7. Standard Deviation of Patch Size,
  8. Largest Patch,
  9. Mean Patch Shape, and
  10. Distribution of PatchSize.
Any of the above listed statistics can be displayed for each of the cover types found on the map. There is one graph available for each statistic for each cover type, making the number of possible graphs quite large. Because of the large number of possible graphs, the graph selection window was separated into two possible selection boxes - one for the cover type and one for the statistic (see Figure gif). The user selects the cover type that he/she is interested in and then selects the statistic to be graphed. The graph of the statistic for the chosen cover type is displayed using version 11.3.2 of xgraph, a public-domain graphing tool for X Windows systems [Har89].

 
Figure: LUCAS Graphs Menu. 

By receiving input from the user with the use of two selection boxes, the user is not required to enter a selection from the keyboard. In this way, the user cannot make a wrong selection when indicating which graph should be plotted on the screen. Another advantage is that the user does not have to consult a user manual to determine the set of available choices.



Brett Hazen (hazen@cs.utk.edu)
Wed Jan 11 12:40:20 EST 1995