Compute the area covered by polygons
Usage
# S4 method for class 'giottoPolygon'
area(x, ...)
# S4 method for class 'SpatVector'
area(x, ...)Examples
sl <- GiottoData::loadSubObjectMini("spatLocsObj")
gpoly <- GiottoData::loadSubObjectMini("giottoPolygon")
gpoints <- GiottoData::loadSubObjectMini("giottoPoints")
# area of polygons
area(gpoly)
#> [1] 115.382156 137.699592 56.258785 40.229395 97.002577 45.332848
#> [7] 71.292382 88.371522 66.422317 79.931111 127.027294 95.667698
#> [13] 68.893156 34.568123 44.002485 28.509585 108.275150 73.819729
#> [19] 78.608663 145.048538 20.719544 28.778835 54.980361 57.290988
#> [25] 61.593386 39.112532 52.105403 51.045881 81.704714 168.285559
#> [31] 42.937577 141.422443 164.660053 88.381279 77.152979 43.167074
#> [37] 44.652023 49.536357 74.097684 93.333373 108.649889 3.625382
#> [43] 32.388099 116.489993 57.535530 92.338288 52.509047 41.150838
#> [49] 47.593223 57.158546 70.455928 25.063070 57.779990 47.941342
#> [55] 42.424001 53.835541 41.876606 55.195710 137.303108 69.164203
#> [61] 41.795739 67.310060 44.371163 46.254949 19.546489 81.625242
#> [67] 118.715161 82.471018 87.892114 69.612346 103.555573 88.695051
#> [73] 93.962734 19.435281 105.202436 152.572181 47.933664 156.543998
#> [79] 64.170943 63.638421 66.326260 106.778907 112.661813 112.902630
#> [85] 53.136703 39.287410 44.853020 78.877723 56.053503 46.070249
#> [91] 113.380182 25.782623 157.828400 65.594372 171.872443 27.492766
#> [97] 52.454251 92.875400 40.546921 80.775562 17.990194 48.474324
#> [103] 13.770289 115.135690 24.315644 97.226983 68.116633 101.073033
#> [109] 15.995823 43.848299 94.734965 78.376501 74.425205 119.146342
#> [115] 82.297781 101.410965 121.705213 30.474723 17.119168 151.719441
#> [121] 43.829745 191.541382 126.260435 36.689881 69.020409 54.050307
#> [127] 185.517103 101.842157 56.174526 121.983821 62.215237 159.424280
#> [133] 132.573959 42.641755 39.443430 29.879557 247.246029 121.401552
#> [139] 25.106711 38.583762 105.001640 74.286747 35.445152 139.179936
#> [145] 46.361149 60.738068 91.896979 129.837339 22.904326 33.473557
#> [151] 130.753727 53.185364 149.418428 132.050815 12.792682 78.129115
#> [157] 70.328907 33.537418 90.686201 19.452148 32.440515 90.376179
#> [163] 219.310104 101.376410 81.311602 45.864517 122.496632 54.147531
#> [169] 27.897431 126.962657 52.160437 81.601298 87.474158 122.075417
#> [175] 38.124635 62.559769 200.075231 76.312474 107.187281 189.431723
#> [181] 61.075352 44.449498 23.821415 38.340378 111.967876 95.682535
#> [187] 40.150629 150.355333 158.018954 70.179077 43.838012 29.885799
#> [193] 129.266905 137.371563 87.088326 103.063248 57.474822 61.101909
#> [199] 33.657407 38.653428 57.924050 177.706024 15.250413 36.841646
#> [205] 48.513825 87.425664 132.978824 66.737607 157.029775 54.854626
#> [211] 132.416601 37.131024 90.288613 35.586162 59.038520 95.582097
#> [217] 32.162960 100.569991 116.654919 28.754218 60.072974 102.246471
#> [223] 81.471684 20.977006 64.997885 54.027689 17.416627 67.521147
#> [229] 69.259391 75.810748 95.765004 25.195225 100.951886 44.630761
#> [235] 160.643637 179.393657 97.423910 215.156341 58.553909 29.777089
#> [241] 58.746361 121.143932 55.699201 89.429782 160.979431 145.446617
#> [247] 93.233779 83.193754 35.647268 158.733011 116.032780 124.781295
#> [253] 117.895490 22.248638 56.941543 62.493490 95.618526 112.839798
#> [259] 61.189989 148.845224 74.224374 80.251044 39.901354 66.450440
#> [265] 75.327080 43.292625 147.586155 38.198580 81.429289 67.505694
#> [271] 69.769232 119.652217 105.853346 101.714301 30.890972 87.606791
#> [277] 65.124539 27.064328 38.120760 40.075655 62.308542 80.001513
#> [283] 103.832092 142.686465 24.557224 64.228162 41.272696 58.873217
#> [289] 72.104235 6.660052 96.070015 145.968844 90.020228 37.489668
#> [295] 129.927467 134.536297 36.758667 20.868081 35.585220 70.229709
#> [301] 105.964373 25.159487 61.289897 78.716248 74.899171 17.922789
#> [307] 76.998708 75.030590 27.077454 51.461024 66.444366 71.757876
#> [313] 24.097374 62.408624 84.651353 57.801908 141.544944 65.071704
#> [319] 29.312598 108.802794 55.070164 254.011504 108.318436 97.225920
#> [325] 76.222028 219.411328 46.441821 83.046394 28.717752 24.335424
#> [331] 55.846265 99.011556 20.737471 70.343241 75.132632 19.092044
#> [337] 58.283696 63.382027 74.342376 114.644585 30.219673 26.280021
#> [343] 170.236248 63.422589 116.251979 48.900846 90.521441 60.011770
#> [349] 75.488249 54.209468 37.091655 84.761878 31.721098 97.065126
#> [355] 47.004961 32.547595 139.575862 11.718641 91.200086 62.877798
#> [361] 92.867375 9.942683 111.628109 46.906968 126.742572 146.659695
#> [367] 121.516530 128.993617 49.814376 159.781874 105.119283 76.190982
#> [373] 64.170765 74.998533 60.373170 54.510092 74.993138 74.356919
#> [379] 141.118014 65.791923 72.891288 139.330262 54.700658 20.005007
#> [385] 94.911861 91.686109 94.647883 147.515935 122.057396 39.560030
#> [391] 92.092400 163.831117 61.586632 117.874102 40.784218 39.639844
#> [397] 30.144736 66.180669 11.170534 56.022100 120.455304 157.455917
#> [403] 99.923896 176.239903 53.023597 36.134329 71.485715 113.977649
#> [409] 54.369377 65.763036 38.420173 66.186141 108.683300 49.961911
#> [415] 55.405510 109.453060 17.935675 76.790187 123.710744 31.263041
#> [421] 75.685700 40.072969 55.842580 44.135987 36.906334 96.058841
#> [427] 112.879696 35.377052 209.891465 58.217434 156.125202 83.515929
#> [433] 51.581023 89.286940 78.399934 103.823589 86.643317 64.811750
#> [439] 141.296392 89.394817 53.750554 53.189547 54.276573 100.814926
#> [445] 66.101887 179.872754 26.422177 59.277010 141.781207 65.796310
#> [451] 45.170500 71.155894 48.213360 243.277797 24.620358 99.923534
#> [457] 72.348473 82.358683 137.263692 151.990487 46.179693 73.811876
# area of the convex hull
area(convHull(sl))
#> [1] 199333.6
feature_hulls <- convHull(gpoints, by = "feat_ID")
area(feature_hulls)
#> [1] 144798.7133 187046.0487 188143.6215 210427.1860 180407.1047 179525.7058
#> [7] 185662.0149 208822.2997 197475.9826 157464.4008 65313.8619 40607.1830
#> [13] 158307.8761 195539.8183 56624.3065 85995.6127 63041.4641 209879.3008
#> [19] 176481.9921 192658.6919 169032.8309 116820.7911 195495.3261 101153.2271
#> [25] 120653.8204 137286.5447 93245.5725 128522.5729 193111.8414 49353.5278
#> [31] 180804.6322 128139.1086 153051.7259 206020.5245 145642.8480 152505.7430
#> [37] 186224.4956 50800.2600 209040.3709 187270.9635 166411.3041 169683.5130
#> [43] 1972.2428 205098.5718 182544.5109 64448.4509 28331.9230 42322.6394
#> [49] 3610.8130 8799.0106 23195.2945 3214.9414 10412.5134 72053.1368
#> [55] 120626.5302 60738.7859 48229.3741 30282.2113 8911.4632 71181.9991
#> [61] 22419.9289 53298.6136 84628.9170 200054.0014 200119.6959 102787.5843
#> [67] 63361.1134 75000.6474 176626.0357 99097.9212 53069.9237 40702.9997
#> [73] 61487.3084 127273.3633 57111.5701 133841.2571 144324.4832 210716.6701
#> [79] 132207.5176 86146.5232 164093.7710 135874.2413 70953.2062 89728.6380
#> [85] 180253.5931 165995.3587 108063.6174 150159.6246 35185.9014 183489.9072
#> [91] 211191.0325 197805.1203 189662.1234 192889.5422 132440.8011 53443.2281
#> [97] 203189.7307 157742.8703 157844.6759 78470.3163 42891.5510 33821.5507
#> [103] 151184.7287 205357.6787 153044.4755 186157.1746 144661.6144 67245.9256
#> [109] 99891.9217 130342.7695 55284.9318 165055.3305 190797.7633 123425.4347
#> [115] 170244.0299 158858.8945 68438.8563 181164.1319 147125.4539 176707.4455
#> [121] 196670.1410 129951.9862 56130.7498 194884.0727 130921.8166 8993.5075
#> [127] 184007.4069 204508.4589 163390.4550 175138.2561 85618.0998 108852.5692
#> [133] 178291.7166 5948.7906 189553.4023 33288.5603 187546.3609 193721.1221
#> [139] 187099.2455 111544.1916 169824.2427 182629.6453 153842.1615 114206.2984
#> [145] 210911.4279 199411.5661 193496.9836 52124.3816 111671.8368 217143.9693
#> [151] 52638.6489 61229.5578 149112.6940 140657.9052 43442.4975 60706.2032
#> [157] 38551.4045 2329.5772 123530.9205 13703.5970 185190.5158 146101.2328
#> [163] 149941.5042 97188.3608 127516.2228 148946.6473 149625.0486 197629.5924
#> [169] 153144.4427 168436.2364 130075.8993 134149.9173 72193.2872 26787.0221
#> [175] 119519.3617 156183.6477 134593.0607 163399.9948 131526.4735 47804.8863
#> [181] 205492.3323 157232.1028 121197.4900 163845.3479 40083.6591 18312.2989
#> [187] 85655.4469 153123.9948 174196.8676 121804.4182 52461.4857 171899.3641
#> [193] 211979.5539 105152.9139 192142.5217 159105.8015 150004.0432 141338.8031
#> [199] 188608.9360 145140.7287 199286.2949 154735.2345 31732.1041 53209.3025
#> [205] 6561.2860 115700.7475 89303.6690 134584.2116 133917.3126 96030.7518
#> [211] 10813.7838 155653.7377 67531.9731 33505.7382 95789.7497 106343.2921
#> [217] 207077.8986 190364.0199 17068.4872 143526.0469 183880.8817 162583.8700
#> [223] 154264.8404 195784.6299 77803.8483 59291.6180 102642.3201 207911.3473
#> [229] 180587.5670 88490.0306 169056.4974 132544.9566 164847.8773 83523.8146
#> [235] 76820.7102 24476.6428 20017.6829 193958.7959 206867.3557 127181.7507
#> [241] 69722.6199 111911.0138 80652.9708 26613.0416 160175.1586 94516.3283
#> [247] 197760.0457 171974.4749 213712.1538 200998.7761 210189.2502 205158.0394
#> [253] 53200.8816 21555.2591 129052.4588 45379.0769 132356.6424 189415.9034
#> [259] 152804.3918 23989.4458 30160.6806 127681.6720 125866.3606 171379.6925
#> [265] 160560.9106 181577.2311 170110.4521 62959.7269 135522.6912 82161.7389
#> [271] 64709.6904 120428.2414 51760.3808 29019.6612 92957.8966 67643.3438
#> [277] 79745.5991 162345.8387 177205.7244 64956.2263 73614.0551 170299.4173
#> [283] 47351.9062 18947.1547 165440.5822 115384.7093 206734.0143 209733.3384
#> [289] 128636.3201 137608.9949 26458.9509 117258.2422 40426.2985 176406.4456
#> [295] 169647.3954 154982.2534 41851.6406 187780.5956 38591.3468 205377.0827
#> [301] 175768.2754 56946.4078 162984.3471 208281.3627 196120.1871 207955.2629
#> [307] 166788.0597 58235.4575 123962.0055 147825.7471 153163.2194 38223.7941
#> [313] 53137.2779 15907.0189 696.8923 120960.3162 5148.3261 14033.1056
#> [319] 63886.6932 120026.6378 88685.3133 163816.3287 128323.9647 206332.1977
#> [325] 173391.6733 185103.9587 170731.6459 94495.2530 188002.2522 68231.3765
#> [331] 93176.2753 93399.5022 71158.8974 115309.0944 95269.5287 731.8556
#> [337] 84537.1417