def process():
parser = ArgumentParser(
description="Produce graph quantifying the amount of green land between two locations")
parser.add_argument("--start", nargs="+",
help="The starting location, defaults to London ")
parser.add_argument("--end", nargs="+",
help="The ending location, defaults to Durham")
parser.add_argument("--steps", type=int,
help="An integer number of steps between the starting and ending locations, defaults to 10")
parser.add_argument("--out",
help="The output filename file, which will be saved as file.png. This defaults to graph.png")
arguments = parser.parse_args()
if arguments.start and arguments.end:
mygraph = Greengraph(arguments.start, arguments.end)
else:
mygraph = Greengraph("London", "Durham")
if arguments.steps:
data = mygraph.green_between(arguments.steps)
else:
data = mygraph.green_between(10)
plt.plot(data)
plt.xlabel("Step")
plt.ylabel("Number of green pixels (Max 160000)")
if arguments.start and arguments.end:
plt.title("Graph of green land between " +
" ".join(arguments.start) + " and " + " ".join(arguments.end))
else:
plt.title("Graph of green land between London and Durham")
if arguments.out:
filename = arguments.out + ".png"
plt.savefig(filename)
else:
plt.savefig("graph.png")
def plotGraph(start, end, steps, out=None):
""" Generate a greeting string for a person.
Parameters
----------
start: str
Start city.
end: str
End city.
steps: int
Gives number of images to process between start and end.
out: str
Specifies output file for graph. If not given then graph will be displayed.
Returns
-------
Nothing
"""
mygraph=Greengraph(start, end)
data = mygraph.green_between(steps)
plt.plot(data)
plt.xlabel("steps")
plt.ylabel("proportion of green pixels")
plt.title("Greengraph from "+start+" to "+end)
if out:
plt.savefig(out)
else:
plt.show()
def greengraph(fromLocation, toLocation, steps):
greenGraphObject = Greengraph(arguments.fromLocation, arguments.toLocation)
#print(greenGraphObject.geolocate(arguments.fromLocation))
#print(arguments.fromLocation)
#greenGraphObject = Greengraph(arguments)
data = greenGraphObject.green_between(arguments.steps)
return data
def green_plotter(arguments):
this_graph = Greengraph(arguments.first_location, arguments.second_location)# create an instance of the Greengraph class object.
green_count = this_graph.green_between(arguments.steps)
plt.plot(green_count)
plt.title('Number of green pixels in locations between ' + arguments.first_location + ' and ' + arguments.second_location)
plt.xlabel('Steps')
plt.ylabel('Green pixels')
plt.savefig(arguments.output + '.png')
plt.show()
def chart(start, end, steps, out):
this_chart = Greengraph(start,end)
this_data = this_chart.green_between(steps)
this_plot.plot(this_data)
#Add Annotations
this_plot.xlabel("Steps")
this_plot.ylabel("'Green Pixel Density'")
this_plot.title("Green Land Density: " + start + " - " + end)
#Save result and show user
this_plot.savefig(out)
this_plot.show()
def main():
parser = ArgumentParser(description = "Evaluate how 'green' the path between two locations is")
parser.add_argument('--from', '-f', help = 'Start location', dest='fromLoc')
parser.add_argument('--to', '-t', help = 'End location', dest='toLoc')
parser.add_argument('--steps', '-s', type = int, help = 'How many steps to evaluate', default = 20)
parser.add_argument('--out', '-o', help = 'Output file name. Default file type: PNG', default = 'output.png')
arguments = parser.parse_args()
mygraph=Greengraph(arguments.fromLoc,arguments.toLoc)
data = mygraph.green_between(arguments.steps)
plt.plot(data)
plt.savefig(arguments.out)
def plotGreenDistribution(startPos, endPos, steps, outFile):
'''
Generate a plot with the distribution of green pixels between two locations.
:param startPos: A starting location, like 'London'
:type startPos: string
:param endPos: An ending location, like 'Cambdrige'
:type endPos: string
:param steps: A number of steps to discretise the space between the two locations, like 15
:type steps: int
:param outFile: A filename to be used for saving the plot, like 'outGraph.png'
:type outFile: string
:returns: A file with the graph representing the distribution of green pixels.
'''
# make sure the input parameters are valid
if not isinstance(steps,int):
raise ValueError("The steps value: "+ str(steps)+" is not an integer")
if not isinstance(startPos,str):
raise ValueError("The start position: "+ str(startPos)+" is not a string")
if not isinstance(endPos,str):
raise ValueError("The end position: "+ str(endPos)+" is not a string")
if not isinstance(outFile,str):
raise ValueError("The output filename: "+ str(outFile)+" is not a string")
if steps<=0:
raise ValueError("The steps value: "+ str(steps)+" is non-positive")
if len(startPos)==0:
raise ValueError("The starting position: "+ startPos+" is empty")
if len(endPos)==0:
raise ValueError("The ending position: "+ endPos+" is empty")
if len(outFile)==0:
raise ValueError("The output filename: "+ outFile+" is empty")
if startPos == endPos:
raise ValueError("The start and the end position are the same!")
myGraph=Greengraph(startPos,endPos)
data=myGraph.green_between(steps)
titleString='Proportion of green pixels between ' + startPos+ ' and ' + endPos
plt.plot(data)
plt.xlabel('Distance steps')
plt.ylabel('Number of green pixels')
plt.title(titleString)
plt.savefig(outFile)
def runGreengraph():
parser = ArgumentParser(description = "Generates a graph of the proportion of green pixels in a series of satellite images between two points")
parser.add_argument('--from', dest='start', default='New York', help='Starting location, defaults to New York') # Python doesn't like 'arguments.from'
parser.add_argument('--to', dest='end', default='Chicago', help='End location, defaults to Chicago')
parser.add_argument('--steps', default=20, help='Number of steps between start and end locations, default 20')
parser.add_argument('--out', help='Filename to save plot to. Displays plot on screen instead if not specified')
parser.add_argument('--format', default=None, help='Optionally force an output format, overriding extension in --out')
arguments=parser.parse_args()
mygraph=Greengraph(arguments.start,arguments.end)
data = mygraph.green_between(arguments.steps)
plt.plot(data)
if arguments.out:
plt.savefig(arguments.out,format=arguments.format)
else:
plt.show()
def process():
parser = ArgumentParser(
description="Generate graph of proportion of green pixel in a series of satellite images between two points:"
)
parser.add_argument("--from", "-f", dest="fromCity")
parser.add_argument("--to")
parser.add_argument("--steps")
parser.add_argument("--out")
arguments = parser.parse_args()
print(arguments.to, arguments.fromCity, arguments.steps, arguments.out)
mygraph = Greengraph(arguments.fromCity, arguments.to)
data = mygraph.green_between(arguments.steps)
plt.plot(data)
plt.savefig(arguments.out)
def process():
parser = ArgumentParser(description = 'Plot the propotion of green space between two locations')
parser.add_argument('--start','-s',type=str,required=True,
help='The starting location')
parser.add_argument('--end','-e',type=str,required=True,
help='Then end location')
parser.add_argument('--steps','-n',default=10,type=int,
help='Number of satalite images to inspect between start and end locations - default = 10')
parser.add_argument('--out','-o',default='green_between.png',
help='Name of the .png output file the calculated graph will be written to - default = green_between.png')
arguments = parser.parse_args()
mygraph = Greengraph(arguments.start,arguments.end)
data = mygraph.green_between(arguments.steps)
plt.plot(data)
plt.savefig(arguments.out)
def process():
#get_ipython().magic('matplotlib inline')
parser = ArgumentParser(description="Generate appropriate green counts")
#parser.add_argument('--title', '-t')
#parser.add_argument('--polite', '-p', action="store_true")
parser.add_argument('fromLocation')
parser.add_argument('toLocation')
parser.add_argument('steps')
arguments = parser.parse_args()
print(arguments.fromLocation)
greenGraphObject = Greengraph(arguments.fromLocation, arguments.toLocation)
#print(greenGraphObject.geolocate(arguments.fromLocation))
#print(arguments.fromLocation)
#greenGraphObject = Greengraph(arguments)
data = greenGraphObject.green_between(arguments.steps)
print(data)
#print(Greengraph(arguments.fromLocation,arguments.toLocation))
plt.show(data)
def greengraph_parser():
parser = argparse.ArgumentParser(description = "Finds the number of green pixels between two points.")
parser.add_argument('--from', dest='start', default='New York', help='Starting point')
parser.add_argument('--to', dest='end', default='Chicago', help='Ending point')
parser.add_argument('--steps', default='20', help='Steps between points')
parser.add_argument('--out', help='File to save to, else display plot')
args=parser.parse_args()
mygraph=Greengraph(args.start, args.end)
data = mygraph.green_between(args.steps)
plt.plot(data)
plt.title("Green pixels from "+args.start+" to "+args.end)
plt.xlabel("Number of steps")
plt.ylabel("Amount of green pixels")
if args.out:
plt.savefig(args.out)
plt.show()
else:
plt.show()
def test_negative_steps():
with assert_raises(ValueError) as exception:
mygraph = Greengraph(sample_start, sample_end, sample_delay)
data = mygraph.green_between(bad_sample_steps)
def test_bad_end():
with assert_raises(TypeError) as exception:
mymap = Greengraph(sample_start, bad_sample_end, sample_delay)
test = mymap.green_between(sample_steps)
def test_bad_image_extension():
with assert_raises(ValueError) as exception:
mygraph = Greengraph(sample_start, sample_end, sample_delay)
data = mygraph.green_between(sample_steps)
plt.savefig(bad_sample_filename)
def test_negative_steps():
with assert_raises(ValueError) as exception:
mygraph = Greengraph(sample_start, sample_end, sample_delay)
data = mygraph.green_between(bad_sample_steps)
def test_bad_end():
with assert_raises(TypeError) as exception:
mymap = Greengraph(sample_start, bad_sample_end, sample_delay)
test = mymap.green_between(sample_steps)
type=int,
help='Number of steps, default = 20')
parser.add_argument('--plot',
'-p',
action='store_true',
help='Display plot')
parser.add_argument('--delay',
'-d',
type=int,
help='API request delay in seconds')
arguments = parser.parse_args()
mygraph = Greengraph(arguments.start, arguments.end,
arguments.delay) # Create Greengraph object
data = mygraph.green_between(arguments.steps)
# Catch API overload error
# Google sends error picture with 325 green pixels.
# This method should be in one of the classes
if mygraph.api_overload(arguments.steps):
print 'Warning: API overload'
# Saving and plotting data
fig = plt.figure()
plt.plot(data)
fig.suptitle('Greengraph - %s to %s' % (arguments.start, arguments.end),
fontsize=14,
fontweight='bold')
ax = fig.add_subplot(111)
ax.set_xlabel('steps')
# Create parser arguments
if __name__ == "__main__":
parser = ArgumentParser(description = "Count the green space between two locations")
parser.add_argument('start', help = 'Input start location')
parser.add_argument('end', help = 'Input end location')
parser.add_argument('filename', type=str, help ='image filename with extension')
parser.add_argument('--steps', '-s', type=int, help = 'Number of steps, default = 20')
parser.add_argument('--plot', '-p', action ='store_true', help ='Display plot')
parser.add_argument('--delay', '-d', type=int, help = 'API request delay in seconds')
arguments = parser.parse_args()
mygraph = Greengraph(arguments.start, arguments.end, arguments.delay) # Create Greengraph object
data = mygraph.green_between(arguments.steps)
# Catch API overload error
# Google sends error picture with 325 green pixels.
# This method should be in one of the classes
if mygraph.api_overload(arguments.steps):
print 'Warning: API overload'
# Saving and plotting data
fig = plt.figure()
plt.plot(data)
fig.suptitle('Greengraph - %s to %s' %(arguments.start, arguments.end), fontsize=14, fontweight='bold')
ax = fig.add_subplot(111)
ax.set_xlabel('steps')
ax.set_ylabel('green pixel count')
def test_bad_image_extension():
with assert_raises(ValueError) as exception:
mygraph = Greengraph(sample_start, sample_end, sample_delay)
data = mygraph.green_between(sample_steps)
plt.savefig(bad_sample_filename)
