Displaying Graphs



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Displaying Graphs

 

This example simulation demonstrates the effects of land-use decisions from the years 1986-1991 on the western North Carolina (Macon County) landscape for 100 years beyond 1991. After the simulation has completed, the GRASS monitor containing both the original land-cover and the final transition land-cover maps is displayed (see Figure gif). It is difficult to tell for certain from the final land-cover map how the amount of each landcover type has changed during the simulation. To analyze the result of the simulation, graphs of the statistics are displayed.

A Graphs window (see Figure gif) is displayed after the simulation has completed in order to allow the user to observe trends in desired statistics. Several graphs are displayed in this example, including:

  1. Proportion of unvegetated landscape (see Figure gif)
  2. Proportion of forest landscape (see Figure gif)
  3. Area of unvegetated covertype (see Figure gif)

 
Figure: GRASS monitor of completed simulation. 

 
Figure: LUCAS Graphs window. 

From the proportion of landscape graphs (see Figures gif and gif), it can be observed that the proportion of unvegetated land cover increases from less than 1 percent to nearly 2 percent of the land being unvegetated in the year 2091. The proportion of the landscape covered by forest decreases by 1 percent in the 100 year simulation. The area of covertype graph (see Figure gif) indicates that approximately 1000 hectares of landscape transitions to unvegetated landcover during the simulation.

 
Figure: Proportion of Unvegetated Landscape. 

 
Figure: Proportion of Forest Landscape. 

 
Figure: Area of Unvegetated Landscape. 



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