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mpilosov / jetplane.py
Created May 31, 2018
Three-Dimensional Projections (with Linear Algebra)
View jetplane.py
import numpy as np
from matplotlib import pyplot as plt
## DEFINE RE-USABLE METHODS
def rotX(theta): # build a rotation matrix around the y-axis
R = np.eye(3)
R[1,1] = np.cos(theta)
R[1,2] = -np.sin(theta)
R[2,1] = np.sin(theta)
@mpilosov
mpilosov / circle_draw.py
Last active May 31, 2018
One way to draw an ellipse in python (with two functions)
View circle_draw.py
import numpy as np
from matplotlib import pyplot as plt
def drawellipse(center = [0,0], radius = 1, k=1, h=1, N=50):
assert len(center) == 2 # good practice to do things like this.
x0, y0 = center
x = np.linspace(x0-h*radius , x0+h*radius, N)
y = np.sqrt(radius**2 - ((x-x0)/h)**2 )*k # from the eq for an ellipse
plt.plot(x, -y+y0, c='blue')
plt.plot(x, y+y0, c='red')
@mpilosov
mpilosov / pystrings.py
Created May 25, 2018
Favorite Python String Tricks
View pystrings.py
a = 'trip distance'
b = ' '.join([s.capitalize() for s in a.split(' ')])
print(b)
View apache.md

(as root)

mkdir /var/www/website.com
chown $SAFEUSER:$SAFEUSER /var/www/website.com
export SAFEUSER=yourname (if $SAFEUSER is not set)

This is where you keep the contents of your website. Inside here should exist a public_html directory that will be what apache searches for.

tell apache this site is available by copying a skeleton file over with an appropriate new name

@mpilosov
mpilosov / gutenberg.md
Created Feb 18, 2018 — forked from mbforbes/gutenberg.md
How to scrape English Project Gutenberg and get the raw text out of it
View gutenberg.md
@mpilosov
mpilosov / readdict.py
Last active Feb 15, 2018
Read in a dictionary-based file (like a JS output) that is saved as plaintext.
View readdict.py
myfile = 'pred.js'
with open(myfile,'r') as inf:
dict_from_file = eval(inf.read())
# each entry will be a dictionary, parse them as you wish.
print('keys', dict_from_file[0].keys()) # will list available key-value pairs.
# I'm going to extract the data that I personally care about. Class labels.
# playing with these lines allowed me to find the numbers representing the class labels
print(dict_from_file[0]['predicted'][3])
@mpilosov
mpilosov / plot_nonfun.py
Last active Feb 12, 2018
plotting non-functions
View plot_nonfun.py
# something that doesn't pass the vertical line test, comes to us unordered.... we want to piecewise-interpolate.
import numpy as np
# partition our data so that each segment DOES pass the vertical line test.
c = np.where(a[:,1] >= 0.5)[0]
d = np.where(a[:,1] < 0.5)[0]
above = a[c,:] # copies of a
below = a[d,:]
@mpilosov
mpilosov / piecewise.py
Created Feb 11, 2018
piecewise function in python
View piecewise.py
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import numpy as np
def q1(lam):
L1 = lam[:,0] # local column-vectors.
L2 = lam[:,1]
@mpilosov
mpilosov / subplots.py
Created Feb 2, 2018 — forked from dyerrington/subplots.py
Plotting multiple figures with seaborn and matplotlib using subplots.
View subplots.py
##
# Create a figure space matrix consisting of 3 columns and 2 rows
#
# Here is a useful template to use for working with subplots.
#
##################################################################
fig, ax = plt.subplots(figsize=(10,5), ncols=3, nrows=2)
left = 0.125 # the left side of the subplots of the figure
right = 0.9 # the right side of the subplots of the figure