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For this coursework you have to:

1) Set up a NetLogo model for one or more random moving turtles  

The model must show a random walking turtle that colours the patches it lands on yellow and contain a switch that allows the trail of the turtle to  be visible. The model should automatically stop when the canvas is completely covered by yellow patches.

Also, the number of turtles should be regulated by a slider called “number” and the interface should contain plots that show: i) a time series of the turning angle, ii) a delay plot of the next angle vs. current angle and iii) a histogram showing the distribution of turning angles taken by the turtle. Follow the instructions in the Description of Practical 6b to get this done. 

2) Set up a second Netlogo model

identical to the one described above, but now for a turtle that moves not at random but chaotically by computing a logistic function (with the constant “c” set at 4) to update the turning angle. Consult the slides of Lecture 10, especially slides 13 – 21 (and in particular slide 19) for suggestions how to do this.

3) Collect data from the two completed models [10 marks]

Run each model 25 times for a number of 1, 5, 10, 15 and 20 turtles (which should provide you with 25 (repetitions) x 5 (samples of experimental conditions)  x 2 (models) = 250 data values in total).  Use “Behavior Space” for this, as outlined in Practical 7.

The data should be put in the designated boxes (Table 1) on the “CW3 Output & Answer Sheet”. At the bottom of the table three descriptive statistics (mean, standard deviation and 95% Confidence intervals) should be computed for each model and each sample (number of turtles) by the writing the appropriate excel functions in cells G36 to P38). From the mean and the confidence intervals also compute the Lower and Upper Limits of the 95% Confidence intervals (in cells G39 – P40).

4) Visualise the output [10 marks] 
Put the following plots in the assigned frames: 
For one turtle and one chosen run (e.g. the first one) of each model (from the NetLogo Interface):

i) Time series plot of Angle; 
ii) Delay plot of Angle vs LastAngle and 
iii) Histogram showing the count of angles of varying size in respectively the slots for Figs 1(a, b), 2(a, b) and 3(a, b) on the “CW3 Output & Answer Sheet”.

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Tellus molestie nunc non blandit massa enim nec dui. Tellus molestie nunc non blandit massa enim nec dui. Ac tortor vitae purus faucibus ornare suspendisse sed nisi. Pharetra et ultrices neque ornare aenean euismod. Pretium viverra suspendisse potenti nullam ac tortor vitae. Morbi quis commodo odio aenean sed. At consectetur lorem donec massa sapien faucibus et. Nisi quis eleifend quam adipiscing vitae proin sagittis nisl rhoncus. Duis at tellus at urna condimentum mattis pellentesque. Vivamus at augue eget arcu dictum varius duis at. Justo donec enim diam vulputate ut. Blandit libero volutpat sed cras ornare arcu. Ac felis donec et odio pellentesque diam volutpat commodo. Convallis a cras semper auctor neque. Tempus iaculis urna id volutpat lacus. Tortor consequat id porta nibh.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Hac habitasse platea dictumst vestibulum rhoncus est pellentesque. Amet dictum sit amet justo donec enim diam vulputate ut. Neque convallis a cras semper auctor neque vitae. Elit at imperdiet dui accumsan. Nisl condimentum id venenatis a condimentum vitae sapien pellentesque. Imperdiet massa tincidunt nunc pulvinar sapien et ligula. Malesuada fames ac turpis egestas maecenas pharetra convallis posuere. Et ultrices neque ornare aenean euismod. Suscipit tellus mauris a diam maecenas sed enim. Potenti nullam ac tortor vitae purus faucibus ornare. Morbi tristique senectus et netus et malesuada. Morbi tristique senectus et netus et malesuada. Tellus pellentesque eu tincidunt tortor aliquam. Sit amet purus gravida quis blandit. Nec feugiat in fermentum posuere urna. Vel orci porta non pulvinar neque laoreet suspendisse interdum. Ultricies tristique nulla aliquet enim tortor at auctor urna. Orci sagittis eu volutpat odio facilisis mauris sit amet.

Tellus molestie nunc non blandit massa enim nec dui. Tellus molestie nunc non blandit massa enim nec dui. Ac tortor vitae purus faucibus ornare suspendisse sed nisi. Pharetra et ultrices neque ornare aenean euismod. Pretium viverra suspendisse potenti nullam ac tortor vitae. Morbi quis commodo odio aenean sed. At consectetur lorem donec massa sapien faucibus et. Nisi quis eleifend quam adipiscing vitae proin sagittis nisl rhoncus. Duis at tellus at urna condimentum mattis pellentesque. Vivamus at augue eget arcu dictum varius duis at. Justo donec enim diam vulputate ut. Blandit libero volutpat sed cras ornare arcu. Ac felis donec et odio pellentesque diam volutpat commodo. Convallis a cras semper auctor neque. Tempus iaculis urna id volutpat lacus. Tortor consequat id porta nibh.