Practice Problems

Lecture 19

Answer each number in a separate cell

Rename the notebook with your lastName and the lecture

ex. CychB_19

Turn this notebook into TritonEd by the end of class

1. Meshgrid and contour

  • Write a lambda function for the equation $$ c=f(a,b)=(1-a^2+b^3) e^{-(a^2+b^2)/2}$$.
  • Create two arrays- a and b- that range from -3 to 3 in increments of 0.1.
  • Make a meshgrid from a and b.
  • Evaluate c for the meshgrid
  • Make a contour plot of a,b and c.

2. Mkigrf and maps

  • Lisa moved to San Diego in 1983. Use the functions in the mkigrf module to do the following:
    • Calculate the inclination, declination, and strength of the field that year.
    • Create a map of the strength of the field in 1983
      • include coastlines
      • a title
      • a color bar
    • Make a plot of declination in San Diego (33,-117) over the last 100 years.
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