{ "type": "FeatureCollection", "name": "Parcelas catastrales CNR — Boca Poza, Hacienda Cangrejera, mapa 0509R17", "generado": "2026-08-22", "generado_por": "argos-satelital", "crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } }, "fuente": "Servidor ArcGIS del CNR via proxy publico del visor de Clave Catastral: https://www.e.cnr.gob.sv/pserv/proxy.ashx?https://aggeoserver.cnr.gob.sv/server/rest/services/SV/WMS_CAT_NAC/MapServer/5/query (capa 5 «La Libertad», campo pclavecat). El host aggeoserver.cnr.gob.sv NO resuelve por DNS publico: solo funciona a traves de ese proxy.", "sistemas": { "geometry": "WGS84 lon,lat (EPSG:4326) — tal cual lo devuelve el servidor. Es el sistema NATIVO de la capa.", "EPSG_5460_del_servidor": "Lo que devuelve el servidor con &outSR=5460. OJO: NO reproduce las coordenadas de las fichas catastrales; queda 206.890 m al oeste y 183.499 m al norte del Lambert clasico.", "lambert_ES_SIRGAS_calculado": "Lambert Conformal Conic 1SP calculado aqui sobre elipsoide GRS80/WGS84. lat0=13d47'00\"N, lon0=89d00'00\"W, k0=0.99996704, falso este=500000, falso norte=295809.184.", "lambert_ES_NAD27_calculado": "Igual, pero pasando antes de WGS84 a NAD27 Centroamerica con la traslacion geocentrica dX=0, dY=+125, dZ=+194 y proyectando sobre Clarke 1866. ESTE es el que reproduce las fichas catastrales del CNR." }, "features": [ { "type": "Feature", "properties": { "clave_catastral": "0509R17-195", "pclavecat": "0509R17195", "area_m2_calculada": 2035.3847, "perimetro_m_calculado": 211.1356, "vertices": 13, "nota": "CANTON CANGREJERA, COLONIA BOCA POZA, POLIGONO H, NUMERO 3 4 5 6, CASERIO LOS PINOS" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -89.18909911, 13.43614464 ], [ -89.18906678, 13.43613201 ], [ -89.18900396, 13.43610675 ], [ -89.18882846, 13.43604361 ], [ -89.18877766, 13.43602557 ], [ -89.18871392, 13.43600393 ], [ -89.18857352, 13.43595613 ], [ -89.18849131, 13.43592727 ], [ -89.18846452, 13.43591825 ], [ -89.18841187, 13.43590021 ], [ -89.18852064, 13.43565517 ], [ -89.18857884, 13.43568134 ], [ -89.18919039, 13.4359656 ], [ -89.18909911, 13.43614464 ] ] ] }, "geometrias_proyectadas": { "lambert_ES_SIRGAS_calculado": [ [ 479522.347, 257406.773 ], [ 479525.847, 257405.373 ], [ 479532.647, 257402.573 ], [ 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