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Getting Real With Netlogo Models – GIS Case Study

Getting Real With Netlogo Models – GIS Case Study. What Do You Want on the Graphics Window?. Volcanologists might want a topographical image of Mt. St. Helens. Geologists Might Want to See Part of the Grand Canyon. Or Maybe an Image of Slope on the Colorado National Monument.

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Getting Real With Netlogo Models – GIS Case Study

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  1. Getting Real With Netlogo Models – GIS Case Study What Do You Want on the Graphics Window?

  2. Volcanologists might want a topographical image of Mt. St. Helens.

  3. Geologists Might Want to See Part of the Grand Canyon.

  4. Or Maybe an Image of Slope on the Colorado National Monument

  5. Sociologists and Business People Want to See Land Cover • Confluence of the Gunnison and Colorado rivers.

  6. Modeling of Real World Places • Using USGS maps, it is possible to model real world situations and project results into the future.

  7. Constraints • These maps require large memory capacity in the machines used to manipulate them. • Personal computers are now built with the capacity to handle them well. • Adding many agents in the program further strains the ability of the machine to run the program.

  8. Be Aware of Some Issues • USGS maps are digitized from the lower left to the upper right. • The length of the longitudinal columns changes. Some are shorter than others. • Netlogo fills the graphics variables like you read a book, left to right, top to bottom.

  9. The “Odd” Graphics Canvas • The graphics canvas in Netlogo is an odd numbered window. • Your imported data must also have a matching odd number of rows and columns as the window has.

  10. Elevation Vs. Land Cover • It is not possible to scale color for both variables at the same time. • You may find it satisfactory to use RGB or hue, intensity and brightness to combine attributes of land cover and elevation.

  11. HSB Image Using Slope, Elevation and Land Cover Confluence of the Gunnison and Colorado rivers

  12. Land-cover With Scale-color for Elevation

  13. Files and the Netlogo Program • If you want a program to read from a file, the file and the program must be in the same folder. • It needs to be a “.Txt” file.

  14. Getting Started! • We have provided you with a step by step tutorial to assist you in downloading a map and building it into your graphics window. You will find it: • http://netlogo.modelingcomplexity.org/topo-import1.htm

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