Initial commit. completed exercises up to chapter 2. Graphing equations.

.gitignore

@@ -0,0 +1,63 @@
+# ---> Python
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Pycharm
+.idea
+

ch2_graphing/graphing_functions.py

@@ -0,0 +1,38 @@
+"""
+Simple example demonstrating graphing with functions
+
+Topic: Newton's law of Universal Gravitation
+
+Models the relationship between gravitational force and distance between two bodies.
+"""
+
+import matplotlib.pyplot as plt
+
+G = 6.674 * (10 ** -11)
+
+
+def draw_graph(x, y):
+    plt.plot(x, y, marker="o")
+    plt.xlabel("Distance in Meters")
+    plt.ylabel("Gravitational Force in Newtons")
+    plt.title("Gravitational Force and Distance")
+    plt.show()
+
+
+def generate_F_r():
+    """Generates values for r in the New"""
+    r = range(100, 1001, 50)
+    F = []
+
+    m1 = 0.5
+    m2 = 1.5
+
+    for dist in r:
+        force = G * (m1 / m2) / (dist ** 2)
+        F.append(force)
+
+    draw_graph(r, F)
+
+
+if __name__ == "__main__":
+    generate_F_r()

ch2_graphing/pyplot_example.py

@@ -0,0 +1,19 @@
+"""
+Simple Pyplot example
+
+PyPlot is the module you should be using for non-interactive scripts.
+"""
+
+import matplotlib.pyplot
+
+
+def create_graph():
+    x_nums = [1, 2, 3]
+    y_nums = [2, 4, 6]
+
+    matplotlib.pyplot.plot(x_nums, y_nums)
+    matplotlib.pyplot.show()
+
+
+if __name__ == "__main__":
+    create_graph()

ch2_graphing/saving_a_plot.py

@@ -0,0 +1,19 @@
+"""
+Example saving a figure
+"""
+import matplotlib.pyplot as plt
+import pathlib
+
+HERE = pathlib.Path(__file__).parent
+
+
+def create_graph():
+    x = [1, 2, 3]
+    y = [2, 4, 6]
+    plt.plot(x, y)
+    plt.savefig(HERE.joinpath("mygraph.png"))
+
+
+if __name__ == "__main__":
+    print(HERE)
+    create_graph()

ch2_graphing/simple_graphs.py

@@ -0,0 +1,17 @@
+"""
+Simple pylab example
+
+Use pylab when you are in an interactive shell. This example really should be copied into a RPEL.
+"""
+
+from pylab import plot, show
+
+x_numbers = [1, 2, 3]
+y_numbers = [2, 4, 6]
+
+my_graph = plot(x_numbers, y_numbers, marker='o')
+# my_graph = plot(x_numbers, y_numbers, 'o')
+
+
+if __name__ == "__main__":
+    show()

ch2_graphing/temp_comparision_v2.py

@@ -0,0 +1,20 @@
+from pylab import legend, plot, show, title, xlabel, ylabel, axis
+
+nyc_temp_2000 = [31.3, 37.3, 47.2, 51.0, 63.5, 71.3, 72.3, 72.7, 66.0, 57.0, 45.3, 31.1]
+nyc_temp_2006 = [40.9, 35.7, 43.1, 55.7, 63.1, 71.0, 77.9, 75.8, 66.6, 56.2, 51.9, 43.6]
+nyc_temp_2012 = [37.3, 40.9, 50.9, 54.8, 65.1, 71.0, 78.8, 76.7, 68.8, 58.0, 43.9, 41.5]
+
+months = range(1, 13)
+
+plot(months, nyc_temp_2000, months, nyc_temp_2006, months, nyc_temp_2012)
+
+title('Average monthly temperature in NYC')
+
+xlabel("Month")
+ylabel("Temperature")
+
+legend([2000, 2006, 2012])
+
+axis(ymin=0)
+
+show()

ch2_graphing/temp_comparison.py

@@ -0,0 +1,13 @@
+from pylab import legend, plot, show
+
+nyc_temp_2000 = [31.3, 37.3, 47.2, 51.0, 63.5, 71.3, 72.3, 72.7, 66.0, 57.0, 45.3, 31.1]
+nyc_temp_2006 = [40.9, 35.7, 43.1, 55.7, 63.1, 71.0, 77.9, 75.8, 66.6, 56.2, 51.9, 43.6]
+nyc_temp_2012 = [37.3, 40.9, 50.9, 54.8, 65.1, 71.0, 78.8, 76.7, 68.8, 58.0, 43.9, 41.5]
+
+months = range(1, 13)
+
+plot(months, nyc_temp_2000, months, nyc_temp_2006, months, nyc_temp_2012)
+
+legend([2000, 2006, 2012])
+
+show()

ch2_graphing/temp_decimal.py

@@ -0,0 +1,12 @@
+from pylab import plot, show
+from decimal import Decimal
+
+nyc_temp = [50.9, 60.3, 54.4, 52.4, 51.5, 52.8, 56.8, 55.0, 55.3, 54.0, 56.7, 56.4, 57.3]
+
+dec_nyc_temp = list(map(lambda x: Decimal(str(x)), nyc_temp))
+
+years = range(2000, 2013)
+
+plot(years, dec_nyc_temp, marker='o')
+
+show()

ch2_graphing/temp_graph.py

@@ -0,0 +1,7 @@
+from pylab import plot, show
+
+nyc_temp = [53.9, 56.3, 56.4, 53.4, 54.5, 55.8, 56.8, 55.0, 55.3, 54.0, 56.7, 56.4, 57.3]
+
+plot(nyc_temp, marker="o")
+
+show()

requirements.txt

@@ -0,0 +1 @@
+matplotlib