Dockerization allows us to deploy the modules in any server with docker. The deployment creates a docker image with all the requirements specified in requirements.txt and the contents of the local CS_Urban_Indicators directory, and runs the listen.py script.
The following commands build the image and then run a container using the image:
> docker build -t python-urban-indicators .
> docker run -d python-urban-indicatorsWhen the image is built, it will copy the current status of the repo inside the image and it will try to download all the necessary shapefiles by running download_shapeData.py. This might take a while and you might want to do this inside a screen to avoid shutting it down by accident.
Once you execut the docker run command, the container is running even though nothing shows up (that is what the option -d does). To see its status, first get the name that was automatically asigned to the container by running:
> docker container lsThen, attach to the container:
> docker container attach *container_name*Building the image takes a while, which is why we created a light-weight image that can be used for testing during development (see urban-indicator-dev).
First, pull the image
> docker pull crisjf/urban-indicators-devThen, run a container using the image. It will automatically start a bash. The following command also makes sure that the current directory is mounted to the container (run from the directory of the repo):
> docker run -it -v "$(pwd)":/home/CS_Urban_Indicators crisjf/urban-indicators-devThe Handler class combines the results of all heatmaps indicator into one consolidated cityio-geojson with the following format:
{
'type': 'FeatureCollection',
'properties': ['car','truck','bike','altitude'],
'features' : [
{
'geometry':[...],
'properties':[1,2,1,NULL]
},
{
'geometry':[...],
'properties':[2,1,1,NULL]
},
{
'geometry':[...],
'properties':[2,1,1,NULL]
},
{
'geometry':[...],
'properties':[2,1,1,NULL]
},
{
'geometry':[...],
'properties':[NULL,NULL,NULL,1]
},
{
'geometry':[...],
'properties':[NULL,NULL,NULL,2]
}
]
}This example was the result of combining the two geojsons:
{
'type': 'FeatureCollection',
'features' : [
{
'geometry':[...],
'properties':{'car':1, 'truck':2, 'bike':1}
},
{
'geometry':[...],
'properties':{'car':2, 'truck':1, 'bike':1}
},
{
'geometry':[...],
'properties':{'car':2, 'truck':1, 'bike':1}
},
{
'geometry':[...],
'properties':{'car':2, 'truck':1, 'bike':1}
}
]
}
{
'type': 'FeatureCollection',
'features' : [
{
'geometry':[...],
'properties':{'altitude':1}
},
{
'geometry':[...],
'properties':{'altitude':2}
}
]
}Indicators are built as subclasses of the Indicator class, with three functions that need to be defined: setup, load_module, and return_indicator. The function setup acts like an init and can take any argument and is run when the object is instantiated. The function load_module is also run when the indicator in initialized, but it cannot take any arguments. Any inputs needed for load_module should be defined as properties in setup. The function return_indicator is the only required one and should take in a 'geogrid_data' object and return the value of the indicator either as a number, a dictionary, or a list of dictionaries/numbers. Sometimes, the indicator requires geographic information from the table to calculate it. To get geographic information from the table, set the property requires_geometry to True (see Noise heatmap as an example).
The following example implements a diversity-of-land-use indicator:
from toolbox import Indicator
from toolbox import Handler
from numpy import log
from collections import Counter
class Diversity(Indicator):
def setup(self):
self.name = 'Entropy'
def load_module(self):
pass
def return_indicator(self, geogrid_data):
uses = [cell['land_use'] for cell in geogrid_data]
uses = [use for use in uses if use != 'None']
frequencies = Counter(uses)
total = sum(frequencies.values(), 0.0)
entropy = 0
for key in frequencies:
p = frequencies[key]/total
entropy += -p*log(p)
return entropy
div = Diversity()
H = Handler('corktown', quietly=False)
H.add_indicator(div)
H.listen()Let's create an indicator that averages Innovation Potential, Mobility Inmpact, and Economic Impact. We use the CompositeIndicator class for this. This class takes an aggregate function as input. This function takes in the result of Handler.get_indicator_values() as input and returns a number. If you want to have more control over what the CompositeIndicator does you can always extend the class.
from toolbox import Handler, CompositeIndicator
from examples import RandomIndicator
def innovation_average(indicator_values):
avg = (indicator_values['Innovation Potential']+indicator_values['Mobility Impact']+indicator_values['Economic Impact'])/3
return avg
H = Handler('corktown')
R = RandomIndicator()
avg_I = CompositeIndicator(innovation_average,name='Composite')
H.add_indicators([R,avg_I])You can also pass it a pre-existing function, such as np.mean.
from toolbox import Handler, CompositeIndicator
from examples import RandomIndicator
import numpy as np
H = Handler('corktown')
R = RandomIndicator()
avg_I = CompositeIndicator(np.mean,selected_indicators=['Innovation Potential','Mobility Impact','Economic Impact'],name='Composite')
H.add_indicators([R,avg_I])Let's create an indicator that averages Innovation Potential, Mobility Inmpact, and Economic Impact. First, we load the RandomIndicator and pass it to a Handler.
from toolbox import Handler, CompositeIndicator
from examples import RandomIndicator
H = Handler('corktown')
R = RandomIndicator()
H.add_indicator(R)To develop the aggregate function, we use the get_indicator_values() function from the handler class. We need to make sure our aggregate function works with that the Handler is returning:
indicator_values = H.get_indicator_values()In this case, the indicator_values is a dictionary with the following elements:
{
'Social Wellbeing': 0.9302328967423512,
'Environmental Impact': 0.8229183561962108,
'Mobility Impact': 0.3880460148817071,
'Economic Impact': 0.13782084927373295,
'Innovation Potential': 0.8913823890081203
}We do not need to use all of the values returned by the Handler for our indicator. \
Next, we write our simple average function that takes indicator_values as input and returns a value, and pass it as an argument to the CompositeIndicator class constructor.
def innovation_average(indicator_values):
avg = (indicator_values['Innovation Potential']+indicator_values['Mobility Impact']+indicator_values['Economic Impact'])/3
return avg
avg_I = CompositeIndicator(innovation_average,name='Composite')To make sure it is running, we can test it as usual:
avg_I.return_indicator(indicator_values)We finally add it to the Handler:
H.add_indicator(avg_I)The same class can be used to define a heatmap or accessiblity indicator, as opposed to a numeric indicator. First, set the class property indicator_type equal to 'heatmap' or to 'access'. This will flag the indicator as a heatmap and will tell the Handler class what to do with it. Second, make sure that the return_indicator function returns a list of features or a geojson. The example below shows an indicator that returns noise for every point in the center of a grid cell. Because this indicator needs the coordinates of table to return the geojson, it sets the property requires_geometry to True.
class Noise(Indicator):
'''
Example of Noise heatmap indicator for points centered in each grid cell.
Note that this class requires the geometry of the table as input, which is why it sets:
requires_geometry = True
in the setup.
'''
def setup(self):
self.indicator_type = 'heatmap'
self.requires_geometry = True
def load_module(self):
pass
def return_indicator(self, geogrid_data):
features = []
for cell in geogrid_data:
feature = {}
lat,lon = zip(*cell['geometry']['coordinates'][0])
lat,lon = mean(lat),mean(lon)
feature['geometry'] = {'coordinates': [lat,lon],'type': 'Point'}
feature['properties'] = {self.name:random()}
features.append(feature)
out = {'type':'FeatureCollection','features':features}
return outAs an example, we'll build a diversity of land use indicator for the corktown table. The process is the same for any table, provided that it has a GEOGRID variable. Indicators are built as subclasses of the Indicator class, with three functions that need to be defined: setup, load_module, and return_indicator. The function setup acts like an init and can take any argument and is run when the object is instantiated. The function load_module is also run when the indicator in initialized, but it cannot take any arguments. Any inputs needed for load_module should be defined as properties in setup. The function return_indicator is the only required one and should take in a 'geogrid_data' object and return the value of the indicator either as a number, a dictionary, or a list of dictionaries/numbers.
To start developing the diversity indicator, you can use the Handler class to get the geogrid_data that is an input of the return_indicator function.
from toolbox import Handler
H = Handler('corktown')
geogrid_data = H.geogrid_data()The returned geogrid_data object depends on the table, but for corktown it looks like this:
[
{
'color': [0, 0, 0, 0],
'height': 0.1,
'id': 0,
'interactive': True,
'land_use': 'None',
'name': 'empty',
'tui_id': None
},
{
'color': [247, 94, 133, 180],
'height': [0, 80],
'id': 1,
'interactive': True,
'land_use': 'PD',
'name': 'Office Tower',
'old_color': [133, 94, 247, 180],
'old_height': [0, 10],
'tui_id': None
},
{
'color': [0, 0, 0, 0],
'height': 0.1,
'id': 2,
'interactive': True,
'land_use': 'None',
'name': 'empty',
'tui_id': None
},
...
]We build the diversity indicator by delecting the 'land_use' variable in each cell and calculating the Shannon Entropy for this:
from numpy import log
from collections import Counter
uses = [cell['land_use'] for cell in geogrid_data]
uses = [use for use in uses if use != 'None']
frequencies = Counter(uses)
total = sum(frequencies.values(), 0.0)
entropy = 0
for key in frequencies:
p = frequencies[key]/total
entropy += -p*log(p)Now, we wrap this calculation in the return_indicator in a Diversity class that inherits the properties from the Indicator module:
from toolbox import Indicator
from numpy import log
from collections import Counter
class Diversity(Indicator):
def setup(self):
self.name = 'Entropy'
def load_module(self):
pass
def return_indicator(self, geogrid_data):
uses = [cell['land_use'] for cell in geogrid_data]
uses = [use for use in uses if use != 'None']
frequencies = Counter(uses)
total = sum(frequencies.values(), 0.0)
entropy = 0
for key in frequencies:
p = frequencies[key]/total
entropy += -p*log(p)
return entropyBecause this indicator is very simple, it does not need any parameters or data to calculate the value, which is why the load_module function is empty. The setup function defines the properties of the module, which in this case is just the name.
Finally, we run the indicator by instantiating the new class and passing it to a Handler object:
from toolbox import Handler
div = Diversity()
H = Handler('corktown', quietly=False)
H.add_indicator(div)
H.listen()Data available at:
https://www.bls.gov/oes/tables.htmDownload "National industry-specific and by ownership." The ownership part is not relevant, what matters is the industry specific. For 2018, download the file:
https://www.bls.gov/oes/special.requests/oesm18in4.zipThe data is available a multiple NAICS levels, with the 4-digit NAICS being the most fined grained that is complete. Due to privacy concerns, data at the 5 and 6 digit levels are available for select NAICS codes. Note that if we needed for example the 5-digit level, we would need to combine information from the 4-digit level with the 5-digit level to obtain the full picture where some industries would be at the 4-digit level and others at the 5-digit level. For now, we will just stick to the 4-digi level. If we needed to move up, we can simply aggregate from this level up. For 2018, the relevant file is:
nat4d_M2018_dl.xlsxThe script downloadIO.py takes care of everything by generating a csv file in tables/IO:
tables/IO/oesm18in4/nat4d_M2018_dl.csvIMPORTANT: when using nat4d_M2018_dl.csv, we need to select a level of aggregation of the occupations. This is done by filtering the column OCC_GROUP. The options are:
major: 22 categories including 'Architecture and Engineering'
minor: 93 categories including 'Architects, Surveyors, and Cartographers' and 'Engineers'
broad: 455 categories including 'Marine Engineers and Naval Architects'; 'Surveyors, Cartographers, and Photogrammetrists'; Mechanical Engineers'; etc.
detailed: 808 categoriesThe column TOT_EMP has the employment in each occupation in each industry.
Running the following script will create an untracked directory in tables/shapes with shapefiles for census block groups, census tracts, and counties for 2019:
>> python download_shapeData.pyMost APIs provide data aggregated at a different geographic level (block groups, buildings, zip codes, etc.). Geofencing funcions are used to get the list of geographic zones within a given boundary.
For example, to query the Zip Code Business Patterns API for information about Kendall Square area, we need to first know the zip codes within Kendall Square:
>> from geofence import getZips
>> bounds = gpd.read_file('tables/shapes/bounds/Kendall_bounds.shp').to_crs({'init':"EPSG:4326"})['geometry'].values[0]
>> zipcodeList = getZips(bounds=bounds)Using the list of zip codes within Kendall, we can call the ZBP-API to get data for the number of companies and the number of employees within these zip codes. Note that ZBPCall is a wrapper that pings the ZBP-API with a default set of parameters:
>> from APICalls import ZBPCall
>> no_employees = ZBPCall(zipcodeList=zipcodeList)Different zip codes overlap differently with our geofenced bounds. We can use the getOSMWeights function from geofence.py to weight each zip code based on the fraction of the volume of buildings that fall within our bounds:
>> form geofence import getOSMWeights
>> zipShapes = getZips(bounds=bounds,asList=False)
>> weights = getOSMWeights(bounds,zipShapes,'ZCTA5CE10',quietly=False)Finally, we merge the weights with the query results and sum:
>> weighted = pd.merge(no_employees,weights.rename(columns={'ZCTA5CE10':'zip code'}))
>> weighted['weighted_EMP'] = weighted['EMP']*weighted['weight']
>> print(weighted[['weighted_EMP','weighted_ESTAB']].sum())