<!-- Content Wrapper. Contains page content -->
<script src="c3.min.js"> </script>
<link href="c3.min.css" rel="stylesheet" />

<script src="d3.min.js"></script>
<section class="content"  >
 <div class="row">
            <div class="col-md-3">
                <div class="box box-warning">
                <div class="box-header with-border">
                <h3 class="box-title">Multi-layer Analysis</h3>
            </div>
                <!-- select -->
            <div class="form-group">
                <label>Admin Boundries </label>
                <select id="adminselect" class="form-control" onchange="loadgeojson(this);">
                    <option>Select Admin Boundries</option>
                    <option value="dist">District</option>
                    <option value="vill">village</option>
                    <option value="aptaluk50soi2001">taluk</option>

                </select>
            </div>

            <div class="form-group">
                <label>Thematic Layer </label>
                <select id="thematic" class="form-control" onchange="loadthematic(this);">
                    <option>Select Thematic Layer</option>
                    <option>Forest Area</option>
                    <option>Land Use Land Cover</option>
                </select>
            </div>

             <div class="form-group">
                <label>Disaster Type</label>
                <select id="dict" class="form-control" onchange="loadyear();">
                    <option>Select disaster</option>
                    <option value="Flood">Flood</option>
                    <option value="Drought">Drought</option>
                    <option value="Cyclone">Cyclone</option>
                    <option value="Forest Fire">Forest Fire</option>
                    <option value="Forest Fire Hotspot">Forest Fire Hotspot</option>

                </select>
            </div>

            <div class="form-group">
                <label>Year</label>
                <select id="year" class="form-control" onchange="loaddis();">

                    <option value="">Select Year</option>
                </select>
            </div>



            <div class="form-group">
                <label>Disaster</label>
                <select id="disaster" class="form-control" onchange="loadflood(this.value);">
                    <option>Select Disaster</option>
                </select>
            </div>



             <div id="lyranatable" style=" max-height:250px; text-align:justify;" class="scrollbar"></div>

<div style="border:solid;"> <b> Geospatial Dataset at 1:50000 scale for all 36 States/UTs </b>
        <div id="scalewise" ></div>
        </div>





          </div>
          </div>
          <div class="col-md-9">
            <div id="map">
          </div>
          </div>
</div>
</section>
<script>
function addinteraction(){

        //map.addInteraction(draw_inter);

    }
function drawaoi(a){
    if(a.checked){
        map.addInteraction(draw_inter);
    }
    else{
        map.removeInteraction(draw_inter);
    }
}



style_g = new ol.style.Style({
              fill: new ol.style.Fill({
                color: 'rgba(255, 255, 255, 0.3)'
              }),
              stroke: new ol.style.Stroke({
                color: 'rgba(255, 120, 0, 0.6)',
                width: 1
              })
            });
            styles_g = [style_g];

         olParser = new jsts.io.olParser();
            var poly2 = olParser.read(feature.getGeometry());


                        var xmlhttp;
searchstyles = {

        'MultiPolygon': [new ol.style.Style({
            fill: new ol.style.Fill({
              color: 'rgba(255,255,0,0.5)'
            }),
            stroke: new ol.style.Stroke({
              color: '#ff0000',
              width: 3
            }),

        })]
    };

             stylesearch = function(feature, resolution) {
      return searchstyles[feature.getGeometry().getType()];
    };
jsontalukgeom_layer = new ol.layer.Vector({
              source: jsontaluk,
              style: styles_g
            });



function loadgeojson(b) {
    var adsel = document.getElementById("adminselect").value;
    alert(adsel);

        if( window.XMLHttpRequest )
                            {// code for IE7+, Firefox, Chrome, Opera, Safari
                                xmlhttp = new XMLHttpRequest();
                            }
                            else
                            {// code for IE6, IE5
                              xmlhttp = new ActiveXObject( "Microsoft.XMLHTTP" );
                            }
                            xmlhttp.onreadystatechange = function( )
                            {
                              if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
                              { jsontaluk.clear();
                                var allgeojson=xmlhttp.responseText;
                                alert(allgeojson);
                                var test= JSON.parse(allgeojson);
                                alert("test "+test);
                                //var response = jQuery.parseJSON(allgeojson);
                                //alert(response);
                                 var res = new Array(response);
                                 alert("response "+res);

                                 jsontaluk.addFeatures(jsontaluk.getFormat().readFeatures(allgeojson));
                                 map.getView().setCenter(allgeojson);
                                map.getView().setZoom(7);

                              }
                            }

                            var url = "inc/loadgeojson.inc.php";
                            url=url+"?val="+adsel;
                            //url=url+"&col="+adsel[1];
                        //  url=url+"&table="+adsel[2];
                            //url=url+"&schema="+adsel[3];

                            xmlhttp.open( "POST", url, true );
                            xmlhttp.send();

    map.addInteraction(draw_inter);

}

}
</script>

<?php
$dias=$_POST["adsel"];
echo $adsel;
$db = pg_connect("host=172.31.4.61 port=5432 dbname=geoserver user=postgres password=ndem$123") or die ("cant");

$data_query = "SELECT row_to_json(fc) FROM ( SELECT 'FeatureCollection' As type, array_to_json(array_agg(f)) As features";
$data_query .= " FROM (SELECT 'Feature' As type";
$data_query .= ", ST_AsGeoJSON(lg.geom)::json  As geometry";
$data_query .= ", row_to_json((SELECT l FROM (SELECT taluk) As l";
$data_query .="  )) As properties";
$data_query .= " FROM s50k.aptaluk50soi2001 As lg ) As f )  As fc";


$result = pg_query($db,$data_query);
while($row_p=pg_fetch_row($result)) {
        $count = count($row_p);
        $y = 0;
        while ($y < $count)
        {
            $c_row = current($row_p);
            $lat_lon.=  $c_row . ",";
            next($row_p);
            $y = $y + 1;
        }
    }

echo $lat_lon;
echo json_encode($lat_lon);
pg_close($db);
?>

`jsontaluk.addFeatures(jsontaluk.getFormat().readFeatures(allgeojson));` whats wrong in the line `map.addLayer(allgeojson);` beacuse allgeojson is having geometry I have alerted it on the window.