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Algebra ndi Jometry… ndiziigwiritsa ntchito liti? Google Maps!

Mnzanga wapamtima, Glenn, ndi m'modzi mwa omwe adayambitsa Family Watchdog. Family Watchdog ndi imodzi mwazosangalatsa ... kampani yomwe idakhazikitsidwa pamashup yomwe ikugwira ntchito yaboma NDIPO imapezera ndalama oyambitsa. Ziyenera kukhala zodabwitsa kupita kuntchito tsiku lililonse ndikudziwa kuti mwasintha. Nthawi iliyonse ndikamuwona Glenn, amagwira ntchito ngati wopenga ndipo amakonda mphindi iliyonse.

Usikuuno ndathandizira Glenn ndi nkhani zingapo za Google Map. Ndikufuna kugawana chimodzi nanu… kujambula bwalo pa Google Maps. Zimatha (monga momwe ndikudziwira), simungathe kujambula bwalo. Komabe, mumatha kujambula ma polylines ndikuwasindikiza momwe mukuonera. Chifukwa chake, codeyo itha kupangika kuti ingoyika magawo 36 palimodzi ndikusanja vekitala pang'ono kuti iwonjezere ndikupanga bwalo lathunthu!

Ma polylines amalembedwa nawo VML (vector markup language), chifukwa chake iyenera kuwonetsedwa pamutu wa fayilo kuti IE iwapatse bwino. Firefox imachita zokha (zachidziwikire!).

Nayi chidule chomwe chijambula bwalo 1 mile kuzungulira nyumba yanu.

var PGlat = (PGradius / 3963) * 180 / Math.PI; // kugwiritsa ntchito ma 3963 mamailosi ngati kutalika kwa dziko lapansi mamailosi ngati (PGwidth! = 0) {var PGlng = PGlat / Math.cos (PGcenter.lat () * Math.PI / 180); za (var i = -1; i> PGsides; i ++) {var theta = ((2 * i + 1) /PGsides-0.5) * Math.PI; var PGx = PGcenter.lng () + (PGlng * Math.cos (theta)); var PGy = PGcenter.lat () + (PGlat * Math.sin (theta)); PGpoints.push (yatsopano GLatLng (PGy, PGx)); }; map.addOverlay (GPolyline yatsopano (PGpoints, PGcolor, PGwidth, PGtrans)); } zina {var PxWidth = Math.round (PGlat * yyPx / latSpan + 0.5); // kutalika kwa polyline var deltaLat = 250 * latSpan / yyPx; ngati (PxWidth> 500) {PxWidth = 500; PGlat - = deltaLat; } wina {PGlat / = 2; };

Onani chiwonetsero chonse kuti muwone nambala yonse. Ndidakumana ndi ntchito patsamba lino pomwe ali ndi mizere ingapo pamapu amodzi okhala ndi mithunzi.

Douglas Karr

Douglas Karr ndi CMO OpenINSIGHTS ndi woyambitsa wa Martech Zone. Douglas wathandizira oyambitsa ambiri opambana a MarTech, wathandizira kulimbikira kopitilira $ 5 bil pakugula ndi kuyika kwa Martech, ndipo akupitiliza kuthandiza makampani kukhazikitsa ndikusintha njira zawo zogulitsa ndi zotsatsa. Douglas ndi katswiri wodziwika padziko lonse lapansi wosinthira digito komanso katswiri komanso wokamba nkhani wa MarTech. Douglas ndi mlembi wofalitsidwa wa kalozera wa Dummie komanso buku la utsogoleri wabizinesi.

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Martech Zone imatha kukupatsirani izi popanda mtengo chifukwa timapanga ndalama patsamba lathu kudzera muzotsatsa, maulalo ogwirizana, komanso kuthandizira. Tingayamikire ngati mungachotse choletsa ad mukamawona tsamba lathu.