Evaluate Overlaps

Routines to check overlaps between nightlight scans and aoi 
aoi = gpd.read_file('../data/admin_areas/ph_admin_bbox_wgs84.geojson')
aoi_planar = aoi.to_crs('EPSG:3857')
aoi_planar['bound_area'] = aoi_planar.geometry.area
phl_matched20180501 = search_dates_aoi(aoi, date_param='20180501')
CPU times: user 866 ms, sys: 613 ms, total: 1.48 s
Wall time: 10.2 s
phl_matched_planar = phl_matched20180501.to_crs('EPSG:3857')
phl_matched_planar['section_area'] = phl_matched_planar.geometry.area
results = azs.create_area_zonal_stats(phl_matched_planar, aoi_planar, aggregations=[])
CPU times: user 48.9 ms, sys: 0 ns, total: 48.9 ms
Wall time: 49.2 ms
results.head()
href item_href stem suffix base_url folder product_id start_date first_scantime end_scantime ... create_datetime data_origin data_domain vflag_file vflag_href cache_stem asset_href geometry section_area intersect_area_sum
80 ./SVDNB_npp_d20180501_t1634142_e1639546_b33728... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1634142_e1639546_b33728_c... rade9.co.json https://globalnightlight.s3.amazonaws.com npp_201805 SVDNB_npp 20180501 1634142 1639546 ... 20180501223954897862 noac ops npp_d20180501_t1634142_e1639546_b33728.vflag.c... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1634142_e1639546_b33728_c... https://globalnightlight.s3.amazonaws.com/npp_... POLYGON ((13246796.765 2155183.158, 13246796.7... 1.437277e+13 2.127466e+11
81 ./SVDNB_npp_d20180501_t1639558_e1645362_b33728... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1639558_e1645362_b33728_c... rade9.co.json https://globalnightlight.s3.amazonaws.com npp_201805 SVDNB_npp 20180501 1639558 1645362 ... 20180501224536066966 noac ops npp_d20180501_t1639558_e1645362_b33728.vflag.c... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1639558_e1645362_b33728_c... https://globalnightlight.s3.amazonaws.com/npp_... POLYGON ((12912838.293 229.689, 12912838.293 2... 1.088441e+13 2.237799e+12
82 ./SVDNB_npp_d20180501_t1645375_e1651161_b33728... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1645375_e1651161_b33728_c... rade9.co.json https://globalnightlight.s3.amazonaws.com npp_201805 SVDNB_npp 20180501 1645375 1651161 ... 20180501225118045996 noac ops npp_d20180501_t1645375_e1651161_b33728.vflag.c... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1645375_e1651161_b33728_c... https://globalnightlight.s3.amazonaws.com/npp_... POLYGON ((12356240.839 -2272782.155, 12356240.... 1.039730e+13 6.358422e+10
89 ./SVDNB_npp_d20180501_t1816398_e1822184_b33729... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1816398_e1822184_b33729_c... rade9.co.json https://globalnightlight.s3.amazonaws.com npp_201805 SVDNB_npp 20180501 1816398 1822184 ... 20180502002220226537 noac ops npp_d20180501_t1816398_e1822184_b33729.vflag.c... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1816398_e1822184_b33729_c... https://globalnightlight.s3.amazonaws.com/npp_... POLYGON ((10463798.364 1804965.959, 10463798.3... 1.321192e+13 8.253388e+11
90 ./SVDNB_npp_d20180501_t1822196_e1828000_b33729... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1822196_e1828000_b33729_c... rade9.co.json https://globalnightlight.s3.amazonaws.com npp_201805 SVDNB_npp 20180501 1822196 1828000 ... 20180502002801307723 noac ops npp_d20180501_t1822196_e1828000_b33729.vflag.c... https://globalnightlight.s3.amazonaws.com/npp_... SVDNB_npp_d20180501_t1822196_e1828000_b33729_c... https://globalnightlight.s3.amazonaws.com/npp_... POLYGON ((10018520.400 -333881.539, 10018520.4... 1.045368e+13 1.839721e+12

5 rows × 21 columns

aoi_planar
geometry bound_area
0 POLYGON ((14093600.302 511201.726, 14093600.30... 2.600698e+12 
tot_aoi_area = aoi_planar.bound_area.sum(); tot_aoi_area
results['pct_covered'] = results['intersect_area_sum'] / tot_aoi_area 
sorted_results = results.sort_values(by='pct_covered',ascending=False)
sorted_results

compute_overlaps

 compute_overlaps (aoi, matched_results)
sorted_results = compute_overlaps(aoi,phl_matched20180501)
CPU times: user 37.2 ms, sys: 6.45 ms, total: 43.6 ms
Wall time: 41.8 ms
sorted_results[['pct_covered']].head()
pct_covered
81 0.860461
90 0.707395
89 0.317353
80 0.081804
82 0.024449 
aoi_ph = gpd.read_file('../data/admin_areas/phl_admbnda_adm3_psa_namria_20200529.shp')
aoi_ph_planar = aoi_ph.to_crs('EPSG:3857')
ax = plt.axes()
ax = sorted_results[:2].plot(ax=ax, facecolor='none', edgecolor='blue')
ax = aoi_ph_planar.plot(ax=ax,color='red')