vgauthier

### Keybase proof

I hereby claim:

  * I am vgauthier on github.
  * I am vgauthier (https://keybase.io/vgauthier) on keybase.
  * I have a public key whose fingerprint is 2DFE B470 E2A1 97CB 4CE9  8CD2 9317 A153 5D11 CA80

To claim this, I am signing this object:

vgauthier

from ipywidgets import FloatProgress
from IPython.display import display
import time

max_count = 100

f = FloatProgress(min=0, max=max_count) # instantiate the bar
display(f) # display the bar

count = 0

vgauthier

def errorfill(x, y, yerr, color=None, alpha_fill=0.3, ax=None):
  # Plot the standart error bar stolen from http://tonysyu.github.com/plotting-error-bars.html
  ax = ax if ax is not None else plt.gca()
  if color is None:
    color = ax._get_lines.color_cycle.next()
    if np.isscalar(yerr) or len(yerr) == len(y):
      ymin = y - yerr
      ymax = y + yerr
    elif len(yerr) == 2:
      ymin, ymax = yerr

vgauthier

def distance(lat1,lon1,lat2,lon2):
    import math
    # Earth Radius in KM 
    R = 6371
    dLat = math.radians(lat2-lat1);
    dLon = math.radians(lon2-lon1);
    lat1 = math.radians(lat1);
    lat2 = math.radians(lat2);
    a = math.sin(dLat/2) * math.sin(dLat/2) +  math.sin(dLon/2) * math.sin(dLon/2) * math.cos(lat1) * math.cos(lat2)
    c = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a))