{"id":8764,"date":"2017-04-24T18:43:15","date_gmt":"2017-04-24T16:43:15","guid":{"rendered":"http:\/\/agora.xtec.cat\/formacio\/zenit\/?p=8764"},"modified":"2023-02-15T09:08:25","modified_gmt":"2023-02-15T08:08:25","slug":"p01_ud02-0-sistema-informacio-geografica","status":"publish","type":"post","link":"https:\/\/projectes.xtec.cat\/zenit\/general\/p01_ud02-0-sistema-informacio-geografica\/","title":{"rendered":"1.4. Sistemes informaci\u00f3 geogr\u00e0fica (SIG)"},"content":{"rendered":"<div class=\"container\">\n<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#practica\" data-toggle=\"tab\">Practica<\/a><\/li>\n<p>  <!--\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#aplicacions\" data-toggle=\"tab\">Aplicacions<\/a><\/li>\n\n\n  \n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#recursos\" data-toggle=\"tab\">Recursos<\/a><\/li>\n\n-->\n<\/ul>\n<div class=\"tab-content\" style=\"margin-top: 20px;\">\n<div id=\"consulta\" class=\"tab-pane active\">\n      Un\u00a0<strong>sistema d&#8217;informaci\u00f3 geogr\u00e0fica<\/strong>\u00a0(SIG o, en angl\u00e8s, GIS) \u00e9s un sistema inform\u00e0tic, format per maquinari, programari, dades, usuaris i un marc organitzatiu, que permet enregistrar, emmagatzemar, gestionar, analitzar, consultar, visualitzar, presentar i difondre qualsevol tipus d&#8217;informaci\u00f3 geoespacial.<\/p>\n<p>      La caracter\u00edstica m\u00e9s rellevant i diferenciadora dels sistemes d&#8217;informaci\u00f3 geogr\u00e0fica \u00e9s el fet d&#8217;emmagatzemar expl\u00edcitament la posici\u00f3 geogr\u00e0fica i la forma geom\u00e8trica de les entitats o fen\u00f2mens representats en el sistema d&#8217;informaci\u00f3 i, en conseq\u00fc\u00e8ncia, la capacitat d&#8217;interrelacionar informacions d&#8217;entitats o fen\u00f2mens diferents per mitj\u00e0 de la posici\u00f3 i la capacitat de realitzar operacions espacials amb les formes geom\u00e8triques de les entitats o fen\u00f2mens representats. Les condicions indispensables per fer efectives aquestes capacitats \u00faniques dels sistemes d&#8217;informaci\u00f3 geogr\u00e0fica s\u00f3n, d&#8217;una banda, la\u00a0<a href=\"http:\/\/www.icgc.cat\/Ciutada\/Informa-t\/Diccionaris\/Georeferenciacio\" target=\"_self\" rel=\"noopener noreferrer\">georeferenciaci\u00f3\u00a0<\/a>dels diferents conjunts de dades geoespacials, preferiblement segons un mateix\u00a0<a href=\"http:\/\/www.icgc.cat\/Ciutada\/Informa-t\/Diccionaris\/Sistema-de-referencia-espacial\" target=\"_self\" rel=\"noopener noreferrer\">sistema de refer\u00e8ncia espacial<\/a>, i, d&#8217;altra banda, la representaci\u00f3 espacial de la forma geom\u00e8trica de les entitats o fen\u00f2mens mitjan\u00e7ant models de dades espacials adequats com \u00e9s ara el\u00a0<a href=\"http:\/\/www.icgc.cat\/Ciutada\/Informa-t\/Diccionaris\/Model-de-dades-vectorial\" target=\"_self\" rel=\"noopener noreferrer\">model de dades vectorial\u00a0<\/a>o el\u00a0<a href=\"http:\/\/www.icgc.cat\/Ciutada\/Informa-t\/Diccionaris\/Model-de-dades-raster\" target=\"_self\" rel=\"noopener noreferrer\">model de dades r\u00e0ster<\/a>.<\/p>\n<div class=\"attribute-image full-head\"><img decoding=\"async\" src=\"http:\/\/www.icgc.cat\/var\/ezwebin_site\/storage\/images\/media\/images\/sig-exemple-1\/396380-1-cat-ES\/SIG-exemple-1.jpg\" alt=\"\" \/><\/div>\n<p>      Visi\u00f3 t\u00edpica d&#8217;un sistema d&#8217;informaci\u00f3 geogr\u00e0fica com a col\u00b7lecci\u00f3 de conjunts de dades geoespacials, sovint anomenats capes, que representen diferents classes d&#8217;entitats o fen\u00f2mens geogr\u00e0fics corresponents a un mateix \u00e0mbit territorial i que estan georeferenciats segons un mateix sistema de refer\u00e8ncia espacial.<br \/>\n      Font: Adaptat de\u00a0<a href=\"http:\/\/www.dbstephens.com\/DataVisualTechnology\/Geographic_Information_Systems_1.aspx\" target=\"_self\" rel=\"noopener noreferrer\">http:\/\/www.dbstephens.com\/DataVisualTechnology\/Geographic_Information_Systems_1.aspx<\/a>.\n    <\/div>\n<div id=\"practica\" class=\"tab-pane\" style=\"height: 400px\">\n      <a href=\"https:\/\/goo.gl\/obYhyg\" target=\"_blank\" rel=\"noopener noreferrer\"> <button class=\"btn btn-primary\" type=\"button\">Veure en pantalla completa<\/button><\/a><br \/>\n      <iframe loading=\"lazy\" src=\"https:\/\/www.instamaps.cat\/geocatweb\/visor.html?businessid=a2291c60feb598092e3854fdd027ab02&amp;embed=1\" width=\"100%\" height=\"100%\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n    <\/div>\n<div id=\"aplicacions\" class=\"tab-pane\">\n<h2>Aplicacions<\/h2>\n<\/div>\n<div id=\"recursos\" class=\"tab-pane\">\n<h2>Recursos<\/h2>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#practica\" data-toggle=\"tab\">Practica<\/a><\/li>\n<\/ul>\n<p>      Un\u00a0sistema d&#8217;informaci\u00f3 geogr\u00e0fica\u00a0(SIG o, en angl\u00e8s, GIS) \u00e9s un sistema inform\u00e0tic, format per maquinari, programari, dades, usuaris i un marc organitzatiu, que permet enregistrar, emmagatzemar,&hellip;  <a href=\"https:\/\/projectes.xtec.cat\/zenit\/general\/p01_ud02-0-sistema-informacio-geografica\/\" title=\"Read 1.4. Sistemes informaci\u00f3 geogr\u00e0fica (SIG)\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1,330],"tags":[306,313],"class_list":["post-8764","post","type-post","status-publish","format-standard","hentry","category-general","category-obsterra","tag-plafo","tag-ud_cartografia"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/comments?post=8764"}],"version-history":[{"count":3,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8764\/revisions"}],"predecessor-version":[{"id":11372,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8764\/revisions\/11372"}],"wp:attachment":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/media?parent=8764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/categories?post=8764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/tags?post=8764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}