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Introduction to write programs in MATLAB

Introduction to write programs in MATLAB. Ecological Modeling Course Sep 25, 2006. Review for the last class. Introduction to the Programming environment (a) MATLAB windows (b) Data types (c) Input and Output data. Technical route. Input. Output. Central Model. Scalar Vector Matrix.

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Introduction to write programs in MATLAB

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  1. Introduction to write programs in MATLAB Ecological Modeling Course Sep 25, 2006

  2. Review for the last class • Introduction to the Programming environment (a) MATLAB windows (b) Data types (c) Input and Output data

  3. Technical route Input Output Central Model • Scalar • Vector • Matrix • Scalar • Vector • Matrix • Equations • Algorithm Forward analysis

  4. Data input • Assignment statement: e.g. A=6; B=[1; 2; 3; 4; 5; 6; 7; 8; 9]; C=[1 2 3; 4 5 6; 7 8 9];

  5. Data output: • Plot statement: e.g. plot(x,y);title(‘example’);xlabel(‘x axis’);ylabel(‘y axis’);

  6. Central programs: Conceptual model Mathematical equations Computer language

  7. (a) Simple calculation • Add • Subtract • Multiply • Divide

  8. Example I: • Simple equations

  9. (b) Conditional statement

  10. Example II: • Discontinuous function

  11. Example III: Photosynthesis rate

  12. (c) Repetition statement

  13. Example IV: • Fibonacci number 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, …… Number 1000 =

  14. Example V: • Differential equation

  15. Homework: Based on Equation (3.1) and (3.2) (Page 5) & initial values in Figure 2 legend (Page 8) • Develop two-species model to simulate species abundance dynamics and Generate figure 2

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