{"id":1078,"date":"2014-10-13T22:03:57","date_gmt":"2014-10-13T22:03:57","guid":{"rendered":"https:\/\/geojournalism.oeco.org.br\/?p=1078"},"modified":"2015-03-14T18:23:59","modified_gmt":"2015-03-14T18:23:59","slug":"mixing-shapefiles-and-comma-separated-files-in-qgis","status":"publish","type":"post","link":"https:\/\/geojournalism.org\/pt\/2014\/10\/mixing-shapefiles-and-comma-separated-files-in-qgis\/","title":{"rendered":"Construindo um mapa com csv e shapefile no QGIS"},"content":{"rendered":"\n

 <\/p>\n

Introdução<\/a><\/h2>\n
 O formato CSV, do inglês Comma Separated File<\/em>, especifica um tipo de arquivo de dados armazenados de maneira tabular, em que cada linha é um registro e campos são separados por vírgula. Este formato é aceito por ferramentas populares, como o Excel, LibreOffice e Google Docs, e por praticamente todas linguagens de programação. Neste tutorial vamos descobrir como utilizar um arquivo CSV no QGIS, ferramenta de GIS aberta, para construir um mapa sobre a renda dos habitantes da cidade de São Paulo.<\/div>\n
<\/div>\n

Preparação<\/a><\/h2>\n
Vamos utilizar os dados do Censo Brasileiro 2010<\/a>, realizado pelo IBGE, preparados para este tutorial e disponíveis aqui<\/a>. Baixe os arquivos e descompacte em um diretório local.<\/div>\n
<\/div>\n
Baixe e instale o QGIS<\/a>. Este tutorial usa a versão 2.2, mas é possível também seguir os passos com a versão 2.0.<\/div>\n
<\/div>\n

Construindo o mapa<\/a><\/h2>\n
Abra o QGIS e adicione uma camada vetorial a partir do arquivo censo-2010-sp-setores.shp<\/em>.<\/div>\n
<\/div>\n
\"Abrindo<\/a><\/div>\n
<\/div>\n
<\/div>\n
 Agora, adicione uma camada de texto delimitado a partir do arquivo censo-2010-sp-stats.csv:<\/em><\/div>\n
<\/div>\n
<\/div>\n
\"passo-2\"<\/a><\/div>\n
<\/div>\n
\n
Crie uma união entre as duas camadas, na área de propriedades do arquivo shapefile:<\/div>\n
<\/div>\n
 \"passo-3\"<\/a><\/div>\n
<\/div>\n
\n
Esta união de camadas permite criar um estilo para o mapa baseado nos dados que vieram do arquivo CSV. Entre novamente na área de propriedades da camada dos setores e vá para aba de estilo.<\/div>\n
<\/div>\n
Mude o estilo para ‘Graduado’, adicione no campo da coluna a fórmula toreal(“censo-2010-sp-data_V009” ), <\/em>escolha a palheta de cores adequada e marque a caixa de modo como Quantil.<\/em><\/div>\n
<\/div>\n
\"passo-4-pt\"<\/a><\/div>\n
<\/div>\n
<\/div>\n

O mapa resultante<\/a><\/h2>\n
<\/div>\n
Agora você pode adicionar uma legenda e exportar a imagem do mapa para ter um resultado como este:<\/div>\n
<\/div>\n
<\/div>\n
\"mapa\"<\/a><\/div>\n<\/div>\n
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\r\n\t\t\t\r\n\t\t\t
<\/div>\r\n\t\t<\/div> \r\n\t\t
\r\n\t\t\tVitor George<\/strong><\/a> é engenheiro de transportes, programador<\/a> e especialista em dados abertos e tecnologias para cartografia na web. Coordena a iniciativa Código Urbano<\/a> e é colaborador do InfoAmazonia<\/a>.\r\n\t\t<\/div> \r\n\t\t\t<\/div> \r\n\t\t<\/div> <\/div>\n<\/div>\n

<\/p>\n<\/body><\/html>","protected":false},"excerpt":{"rendered":"

  Introdução  O formato CSV, do inglês Comma Separated File, especifica um tipo de arquivo de dados armazenados de maneira tabular, em que cada linha é um registro e campos são separados por vírgula. Este formato é aceito por ferramentas populares, como o Excel, LibreOffice e Google Docs, e por praticamente todas linguagens de programação. Neste […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_wpcom_ai_launchpad_first_post":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[10,1,11],"tags":[],"class_list":["post-1078","post","type-post","status-publish","format-standard","hentry","category-data","category-maps","category-visualization"],"yoast_head":"\nConstruindo um mapa com csv e shapefile no QGIS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/geojournalism.org\/pt\/2014\/10\/mixing-shapefiles-and-comma-separated-files-in-qgis\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Construindo um mapa com csv e shapefile no QGIS\" \/>\n<meta property=\"og:description\" content=\"  Introdução  O formato CSV, do inglês Comma Separated File, especifica um tipo de arquivo de dados armazenados de maneira tabular, em que cada linha é um registro e campos são separados por vírgula. 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