合併多個谷歌地圖的多邊形到一個多邊形，JavaScript的

Question

我情況下面的圖片，如下所示：

我具有座標（LNG，LAT）存儲在數組：

[[[57.25810745004698,-2.147463220484724],[57.24900726567703,-2.150918704035007],[57.25395911797542,-2.158019360659523],[57.2542436749531,-2.1585316191217316],[57.25562976522241,-2.16204890398501],[57.255265155779064,-2.166495336569369],[57.25798151256145,-2.167941564091734],[57.26103327914291,-2.170952645669786],[57.26195297322447,-2.1712398688392796],[57.263941808143194,-2.1758858089264095],[57.262590574341885,-2.178759042359161],[57.26221269128632,-2.1790757247168813],[57.26021300373163,-2.179682366744146],[57.2592871955657,-2.1823633430306018],[57.258418457313304,-2.1836810097764783],[57.256176098574606,-2.1856606588164595],[57.2553347850735,-2.18757815372237],[57.256918901027355,-2.190189504139994],[57.25717970880296,-2.192757589547682],[57.25701652751402,-2.194442692810071],[57.25765640927138,-2.1946879937739823],[57.26055079982741,-2.196543417199109],[57.26478881581858,-2.2006584264936464],[57.263687541299376,-2.2039507974741355],[57.25990330429585,-2.205804063286223],[57.259035389580745,-2.207399906212572],[57.24392366085095,-2.201780654062077],[57.24341463253441,-2.201438840807782],[57.243391919080906,-2.2013868230712887],[57.23896473934729,-2.2008162090943415],[57.2330877224033,-2.195634699274251],[57.23225989180574,-2.1952876484691615],[57.22970587442209,-2.1857139872646485],[57.230166308161756,-2.181112779287332],[57.23910030860912,-2.1846090305614325],[57.239379675553394,-2.185230674365471],[57.24527003782118,-2.189113719863144],[57.249165078583616,-2.1857956765362587],[57.2488130196409,-2.183334243413128],[57.254529837622705,-2.1780292935516172],[57.25476006711664,-2.1773776724736535],[57.25270014298488,-2.1754677767077055],[57.245608223622156,-2.178762057627864],[57.2434065357033,-2.1775314104510244],[57.24131892120943,-2.172730537291841],[57.23797196694906,-2.1712900074030586],[57.22888378462048,-2.1785029117943395],[57.22770637655766,-2.1781188512285325],[57.223020680101996,-2.179548323087033],[57.21999041140472,-2.1887346755856925],[57.21821077185559,-2.1883313741631127],[57.2169071916862,-2.1886449466242084],[57.21414368150896,-2.191890039815007],[57.21383513551693,-2.192974370058664],[57.21366427363764,-2.1931023016069275],[57.211581242048744,-2.19100435222515],[57.21105447849438,-2.190854585948955],[57.20983563547255,-2.1909713817542524],[57.20892645384228,-2.1914780049642104],[57.20870937128266,-2.1921246214916437],[57.20844263388141,-2.1935296563563043],[57.20867609158227,-2.194079290493619],[57.208415554975446,-2.195331127123268],[57.207087078982696,-2.1992682539010957],[57.206183154834996,-2.200612734338165],[57.202931744899544,-2.1989385069007312],[57.20066535884702,-2.1980894378966696],[57.19658481429228,-2.198096757766507],[57.19472809744357,-2.201542261508962],[57.19508529482034,-2.2031938058873948],[57.194457945669626,-2.2046302214108664],[57.19299231499937,-2.210040974178696],[57.19613997064014,-2.211935395376713],[57.1950283337509,-2.218875008504938],[57.194862729218286,-2.218971716997885],[57.194784481560426,-2.2198323934775317],[57.19747621997526,-2.228796542221289],[57.19957125772065,-2.2297874257225203],[57.204008133944555,-2.2347315017625533],[57.192044735842416,-2.2392415404639223],[57.191595573397706,-2.2479130669482856],[57.19940491062111,-2.253603110899462],[57.18781461508141,-2.2585316830325155],[57.18381625930881,-2.261955166654616],[57.189981876398896,-2.2678804346330708],[57.18640793084923,-2.2718932829943697],[57.18032391472698,-2.2757943604801767],[57.18023079798073,-2.275896161066271],[57.184267458906916,-2.2822775617319166],[57.18052942461445,-2.2882614974557782],[57.17778399725451,-2.289436159742877],[57.17615020366205,-2.2923108279285316],[57.177442469352215,-2.295630169435981],[57.171696558827676,-2.9],[57.17232869030713,-2.3104086567631157],[57.18074981744165,-2.310094046875406],[57.186329876119984,-2.3119827518669354],[57.18779022514903,-2.3179814340529674],[57.19684450908027,-2.3238135903201282],[57.19658653554036,-2.3286670990429457],[57.199109344187264,-2.332185653309125],[57.20688289426475,-2.334044277594444],[57.2080804775012,-2.323497140950849],[57.21216966490129,-2.3214254368303955],[57.21934749681765,-2.321774932541871],[57.216607840561764,-2.306326768259737],[57.21699599309105,-2.30608844181279],[57.23139012178608,-2.302701647022559],[57.2344310379044,-2.299341773528795],[57.24525298111021,-2.300591181151958],[57.25061897332306,-2.297811914048225],[57.25177117235992,-2.293244397981539],[57.26749361770455,-2.2839162784914606],[57.27188986875272,-2.2867920506716928],[57.28191952101617,-2.2855323404749015],[57.282371135131555,-2.2852815566102436],[57.27909621341579,-2.2703776561784252],[57.28511186835022,-2.263609182590926],[57.28613058036221,-2.2613846268648103],[57.296530559891885,-2.265142264742053],[57.302839985595014,-2.265236494891269],[57.30550686097516,-2.2689143990473895],[57.30627663940224,-2.2788695416078326],[57.31548136673972,-2.2786756755112947],[57.32034942932915,-2.2799802390014747],[57.32739228239798,-2.2660075487203812],[57.325473345212444,-2.264161241190095],[57.32725190637747,-2.2567499187206295],[57.32070333980549,-2.2423544212001616],[57.31955996938771,-2.2414738465782875],[57.31789651014708,-2.23811668641531],[57.323560865746515,-2.233271654463124],[57.32443896125923,-2.2319456740112855],[57.32206960585557,-2.223265432561675],[57.314597400060805,-2.2202324261647846],[57.314216116069446,-2.2151226743816324],[57.312293504238646,-2.2141155821775556],[57.30291653305257,-2.2221455407909616],[57.296787525483865,-2.22010205864035],[57.30037223516952,-2.210375272278384],[57.29447737361828,-2.2003676368794913],[57.291291940751464,-2.199808265548654],[57.290292288239634,-2.199159207357752],[57.294111964506584,-2.1792466362812775],[57.29160802710085,-2.178120260886999],[57.29012283608672,-2.162756179310122],[57.29265716743792,-2.1604217040770664],[57.28738115128695,-2.1489666032638297],[57.27614485995739,-2.1611002912486583],[57.274778026302464,-2.1604081087145914],[57.273923743679504,-2.1592229515200643],[57.27309882282732,-2.1569867151180233],[57.27189872866945,-2.151559199860799],[57.26344411200469,-2.148724568745024],[57.26020991186048,-2.146999136608315],[57.258681523694484,-2.1471809535053126]],[[57.19958874119088,-2.1862651181461388],[57.198958622004135,-2.1857662783374963],[57.197886191751316,-2.1874073133353704],[57.19960753721797,-2.1886080081865202],[57.19977586842689,-2.1885000008994666]],[[57.20276299348534,-2.1684979123057246],[57.19609435975556,-2.1712643409939574],[57.19704486438276,-2.175332918972458],[57.197117895793795,-2.1753852867170735],[57.1983121522528,-2.1758853069241013],[57.19957009271968,-2.1759021947684687],[57.20127681802609,-2.1744864269614936],[57.201802527442034,-2.1738347230373165]],[[57.19670568556834,-2.1817270142890948],[57.19616982725822,-2.1832767460875857],[57.1976934113878,-2.1843511573194974],[57.19847756144182,-2.184626092308804],[57.20011544801716,-2.1840971903513946],[57.20057558358222,-2.183049433076576],[57.199843637318935,-2.1817445107790263],[57.19835289889606,-2.18133257279635],[57.19711974917167,-2.1815338255069037],[57.19683897401431,-2.1816290589318896]]]

因此，它是由4個多邊形組成的數組，多邊形是座標數組。

我需要這些多邊形合併和存儲爲只有一個數組。誰能幫忙？

我使用JavaScript，Google地圖，node.js.

Answer 1

不可能將所有多段線存儲在平面陣列中（如[[1,1],[2,2],[3,3],[4,4],[5,5]]而不是[[[1,1],[2,2],[3,3]],[[4,4],[5,5]]]）並仍然保持多段線。組合不同循環的效果將會是一串你不想要的交叉線，以及混亂的邊界。

如果您需要弄清楚它們是否有內容，請使用for循環遍歷多段線列表。

var polylines = [.....]; 
for(var i=0; i<polylines.length; i++){ 
    //do whatever with polylines[i] 
} 

我無法想象你需要做一個單一的數組而不是數組。最好保持多段線的形式並使用迭代語句，並利用Google提供的折線函數。

如果您需要查找所有點的邊界，請遍歷點，遍歷多段線，然後爲這些點創建一個臨時數組。

var temp_points; 
for(var i=0; i<polylines.length; i++){ 
    for(var j=0; j<polylines[i].length; j++){ 
    temp_points.push(new google.maps.LatLng(polylines[i][j][0], polylines[i][j][1])); 
    } 
} 
//calculate using temp_points; 

但是，永久連接不相交的折線是一個壞主意。