4 Visualizações de dados do açude de boqueirão

definicao.md

1- Contagem de pesquisas realizadas por mês 2- Ranquear médias anuais 3- Média mensal de volumes 4- Identificar declínios acentuados

visual1.json

{
    "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
    "data": {
    "url": "https://api.insa.gov.br/reservatorios/12172/monitoramento",
    "format": {
    "type": "json",
    "property": "volumes",
    "parse": { "DataInformacao": "utc:'%d/%m/%Y'" }
        }
    },
    "width": 800,
    "height": 120,
    "mark": "bar",
    "encoding": {
        "x": {
            "timeUnit": "year",
            "field": "DataInformacao",
            "type": "ordinal"
        },
        "y": {
            "aggregate": "count",
            "field": "DataInformacao",
            "type": "quantitative"
        }
    }
}

visual2.json

{
    "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
    "data": {
    "url": "https://api.insa.gov.br/reservatorios/12172/monitoramento",
    "format": {
    "type": "json",
    "property": "volumes",
    "parse": { "DataInformacao": "utc:'%d/%m/%Y'" }
        }
    },
    "transform": [
      {
          "filter": {
              "field": "DataInformacao", 
              "range": [{"year": 2007}, {"year": 2018}] 
          }
      }
    ],

    "height": 800,
    "width": 100,
    "mark": {
      "type": "text",
      "align": "center",
      "baseline": "middle"
    },
    "encoding": {
        "y": {
            "axis": {
                "title":"Média Volumétrica em Porcentagem"
            },
            "field": "VolumePercentual",
            "type": "quantitative",
            "aggregate": "mean"
        },
        "text":{
             "field": "DataInformacao",
            "type": "nominal",
            "timeUnit": "year"
        }
    }
}

visual3.json

{
    "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
    "data": {
            "url":"https://api.insa.gov.br/reservatorios/12172/monitoramento",
            "format": {
                "type": "json",
                "property": "volumes",
                "parse": {"DataInformacao": "utc:'%d/%m/%Y'" }
            }
    }, 
    "mark":"line",
    "width": 800,
    "height": 600,
    "transform": [
    {
        "filter": {
            "field": "DataInformacao", 
            "range": [{"year": 2008}, {"year": 2018}] 
        }
    }
    ],
    "encoding":{
        "x": {
            "timeUnit": "month",
            "field": "DataInformacao",
            "type": "temporal",
            "axis": { "title": "Mês"}
        },
        "y": { 
            "aggregate": "mean",
            "field": "VolumePercentual",
            "type": "quantitative",
            "axis": { "title": "Média de Volume Mensal em Porcentagem"}
        },
        "color":{
            "timeUnit": "year",
            "field": "DataInformacao", 
            "type": "nominal",
            "legend": {
                "title": "Ano"
          }
        },
        "size": {"value": 5}
    }
}

visual4.json

{
    "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
    "data": {
    "url": "https://api.insa.gov.br/reservatorios/12172/monitoramento",
    "format": {
    "type": "json",
    "property": "volumes",
    "parse": { "DataInformacao": "utc:'%d/%m/%Y'" }
        }
    },
    "width": 800,
    "height": 120,
    "mark": "bar",
    "encoding": {
        "x": {
            "timeUnit": "year",
            "field": "DataInformacao",
            "type": "ordinal"
        },
        "y": {
            "aggregate": "count",
            "field": "DataInformacao",
            "type": "quantitative"
        }
    }
}