Thank you so much! It works!
Den onsdag den 16. april 2014 00.47.32 UTC+2 skrev Karsten Tietje:
>
> Hi
>
> I'm trying to create a chart from a sql query which gets encoded into
> json. I'm quite certain that my json format is correct:
>
>
> [["Dato","Kilo"],["04-14",90],["04-15",90],["04-14",85],["04-15",85],["04-14",10],["04-15",10],["04-14",12],["04-15",12]]
>
>
>
> SQL and PHP code:
>
> <?php
> global $wpdb;
> $user_ID = get_current_user_id();
>
> $sql="SELECT $wpdb->postmeta.meta_value as Kilo,
> $wpdb->posts.post_date as Dato FROM $wpdb->posts, $wpdb->postmeta
> WHERE post_type = 'workout'
> AND post_author = $user_ID
> AND meta_key = 'vægt'
> AND post_status = 'publish'
> ";
>
> $posts = $wpdb->get_results($sql);
>
>
>
> $result = mysql_query($sql);
> $num = mysql_num_rows($result);
> # set heading
> $data[0] = array('Dato','Kilo');
> for ($i=1; $i<($num+1); $i++)
> {
> $data[$i] = array(substr(mysql_result($result, $i-1, "Dato"), 5, 5),
> (int) mysql_result($result, $i-1, "Kilo"));
> }
> echo json_encode($data);
>
>
> ?>
>
>
> Google chart code:
>
> <script type="text/javascript" src="https://www.google.com/jsapi";></script>
> <script type="text/javascript">
> google.load('visualization', '1', { packages: ['corechart'] });
> google.setOnLoadCallback(drawChart);
>
> function drawChart() {
> var jsonData = $.ajax({
> url: "getData.php",
> dataType: "json",
> async: false
> }).responseText;
>
> var obj = window.JSON.stringify(jsonData);
> var data = google.visualization.arrayToDataTable(obj);
>
> var options = {
> title: 'Test'
> };
>
> var chart = new google.visualization.LineChart(
> document.getElementById('chart_div'));
> chart.draw(data, options);
> }
>
> </script></head>
>
> <div id="chart_div" style="width: 900px; height: 500px;"></div>
>
>
> The chart is simply not showing up, and I can't figure out why. Any
> suggestions?
>
>
>
>
>
>
>
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