Choropleth क्या है?

Python में Geospatial Data का Visualization

Mary van Valkenburg

Data Science Program Manager, Nashville Software School

Choropleth की परिभाषा

मिल्टन कीन्स के LSOAs में औसत निवासी उम्र का choropleth

विश्व GDP per capita PPP का choropleth

Density

schools_in_districts.head(2)

district  geometry                  name               lat    lng
1         (POLYGON ((-86.77 36.38... Nashville Prep    36.16 -86.85
1         (POLYGON ((-86.77 36.38... Rocketship Prep   36.17 -86.79

गिनती पाएँ

school_counts = schools_in_districts.groupby(['district']).size()
print(school_counts)

district
1    30
2    11
3    19
4    18
5    36
6    21
7    13
8    10
9    12
dtype: int64

गिनती जोड़ें

school_counts_df = school_counts.to_frame()
school_counts_df = school_counts_df.reset_index()
school_counts_df.columns = ['district', 'school_count']

districts_with_counts = pd.merge(school_districts, school_counts_df, 
                                 on = 'district')
districts_with_counts.head(2)

district geometry           school_count
1        (POLYGON ((-86.77 36.38...  30
3        (POLYGON ((-86.75 36.40...  19

गिनती को क्षेत्रफल से भाग दें

districts_with_counts['area'] = districts_with_counts.area

districts_with_counts['school_density'] = districts_with_counts.apply(
    lambda row: row.school_count/row.area, axis = 1)

districts_with_counts.head(2)

district geometry           school_count   area    school_density
1        (POLYGON ((-86.77 36.38...    30    0.036641    818.745403
3        (POLYGON ((-86.75 36.40...    19    0.014205    1337.594495

अभ्यास करते हैं!

Python में Geospatial Data का Visualization