1

当我尝试使用 docid 代替表 id 时，我收到 407 代理错误。我的理解是，您不需要为选择记录进行身份验证，只需对插入、更新和删除进行身份验证。当我使用表 id 时，sql 查询挂起。我在 Firebug 控制台窗口中注意到了这些错误。

当表未合并时，我能够从两个表（levels_a.txt 和levels_b.txt）接收数据。当它们合并时，情况并非如此。请参阅下面的代码。

google.load("visualization", "1", { packages: ["corechart", "annotatedtimeline"] });

var map, layer;
var tableID = 3013978;
//var tableID = "1RWnj3geWmOXHcedu8RUeyb1v4ZjZz3YWNpK0MDs";
var location_column = 'geometry';
var name, PID;
var chart;

var jqXHR;
var formatter_long;
var dt;
var rows;
var plot;
var scatter_chart;
var g;

function initialize() {

    var latlng = new google.maps.LatLng(53.760861, -98.813876);
    var myOptions = {
        center: latlng,
        zoom: 5,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        zoomControlOptions: {
            style: google.maps.ZoomControlStyle.SMALL
        },
        mapTypeControl: true,
        mapTypeControlOptions: {
            mapTypeIds: [
                                            google.maps.MapTypeId.ROADMAP,
                                            google.maps.MapTypeId.SATELLITE,
                                            google.maps.MapTypeId.HYBRID,
                                            google.maps.MapTypeId.TERRAIN
                                        ],

            style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
        },
        overviewMapControl: true,
        overviewMapControlOptions: {
            opened: true
        }

    };
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    layer = new google.maps.FusionTablesLayer({
        query: {
            select: location_column,
            from: tableID
        }
    });
    layer.setMap(map);

    google.maps.event.addListener(layer, 'click', function (e) {
        name = e.row['name'].value;
        PID = e.row['WELL_PID'].value;
        drawChart(PID, name);
    });
}

function drawChart(PID, name) {
/*
  var queryURL = "http://www.google.com/fusiontables/api/query?sql=";
  var queryTail = '&jsonCallback=?';
  var whereClause = "WHERE 'WELL_PID'=" + PID; // table id 3004502
  var query = "SELECT 'Date','Level' FROM 3004502 " + whereClause;
  var queryText = encodeURIComponent(query);
  */

  //--------------------------------------------------------------------------------------------//
  var queryUrlHead = 'http://www.google.com/fusiontables/api/query?sql=';
  var queryUrlTail = '&jsonCallback=?';

  var whereClause = "WHERE 'WELL_PID'=" + PID; // table id 3004502
  var query = "SELECT 'Date','Level' FROM 1RrJI_dWPjrmJ7A6xD_GcZ3nxIso9ZTvOPWp0suI " + whereClause;

  var queryurl = encodeURI(queryUrlHead + query + queryUrlTail);

  var jqxhr = $.get(queryurl, dataHandler, "jsonp");
  //console.log(jqxhr);

  /*
  var rows;
  var items = [];
  var arr = [];
  var str;


  $.ajax({
      type: "GET",
      url: queryURL + queryText + queryTail,

      cache: false,
      dataType: 'jsonp',
      jsonpCallback: 'jsonpCallback',

      success: function (data) {

          rows = data.table.rows;

          for (i = 0; i < rows.length; i++) {
              var temp = rows[i];
              var this_date;

              items.push([parseDate(temp[0]), temp[1]]);
          }


          processData(items);

      },
      error: function () { alert("Please wait until chart loads before clicking on another well location."); }
  });
  */
}

function dataHandler(d) {

   var items = [];
   var rows = d.table.rows;

    for (i = 0; i < rows.length; i++) {
        var temp = rows[i];
        var this_date;

        items.push([parseDate(temp[0]), temp[1]]);
    }
    processData(items);

}

function processData(res) {

    var options = {
        strokeWidth: 0.0,
        displayAnnotations: true,
        labelsKMB: false,
        rollPeriod: 14,
        showRangeSelector: true,
        connectSeparatedPoints: false,
        drawPoints: true,
        stepPlot: false,
        pointSize: 1,
        digitsAfterDecimal: 3
    };


    var dat = new google.visualization.DataTable();
    dat.addColumn('date', 'Date');
    dat.addColumn('number', 'Water Level');

    console.log(res.toString());

    if (res.toString() === "") {
        alert("Sorry, there is no data available for this well. Please check back at a later time.");
         $("#dg_div").empty();
    } else {
        dat.addRows(res);
        if (g) {
            g.destroy();
        }
        g = new Dygraph(document.getElementById("dg_div"), dat, options);    
    } 
}

我想执行以下联接：

geography.kml
name | geometry | description

well_name_and_PID.csv
WELL_PID | Name_Short

levels_a.txt
WELL_PID | Date | Level

levels_b.txt
WELL_PID | Date | Level

Joins:

[geography.kml].name -> [well_name_and_PID.csv].Name_Short
[well_name_and_PID.csv].WELL_PID -> [levels_a.txt].WELL_PID
[well_name_and_PID.csv].WELL_PID -> [levels_b.txt].WELL_PID

拥有两级文件的理由是该文件将超过 100 meg 表的上限。这两个文件包含相似的信息。

像往常一样，非常感谢您对此的任何帮助。

在此先感谢，迈克尔

4

0 回答 0