How to display non-continuous lines in a 2D Line flash chart ?

Question

Hi
I am making 2D lines charts. is there a way ig tehre are no data in the table, to not to display points ?
For example I have a table with this data :
Date     Value
01/01/09 2
02/01/09 7
03/01/09 4
05/01/09 3
06/01/09 2You see in the example anove that there is no data for the day 04/01/09.
I would like the chart no to display any point for that day and start again for date following. This means displaying a non-continuous line.
I hope I am clear.
I tried but had no solutions. Would you have any idea on this ?
Thank you for your kind help !
Christian

Answer 1

Hi Christian
You're missing a lot of the XML build up from the website.
You also need to return the string "Missing" for each date that you haven't got.
Try this to get you started (you'll certainly need to fiddle with it to get it working)...
DECLARE
   l_xml   VARCHAR2 (32767);
   start_date DATE;
   end_date DATE;
   the_date DATE;
   count_holder VARCHAR2(10);
BEGIN
   l_xml :=        '<anychart> ';
   l_xml := l_xml||'<settings> ';
   l_xml := l_xml||'<animation enabled="True"/> ';
   l_xml := l_xml||'</settings> ';
   l_xml := l_xml||'<charts> ';
   l_xml := l_xml||'<chart plot_type="Scatter"> ';
   l_xml := l_xml||'<chart_settings> ';
   l_xml := l_xml||'<chart_background> ';
   l_xml := l_xml||'<border color="#990099"/> ';
   l_xml := l_xml||'</chart_background> ';
   l_xml := l_xml||'<title enabled="true"> ';
   l_xml := l_xml||'<text> Something </text> ';
   l_xml := l_xml||'</title> ';
   l_xml := l_xml||'<axes> ';
   l_xml := l_xml||'<x_axis tickmarks_placement="Center"> ';
   l_xml := l_xml||'<title enabled="true"> ';
   l_xml := l_xml||'<text>Date</text> ';
   l_xml := l_xml||'</title> ';
   l_xml := l_xml||'</x_axis> ';
   l_xml := l_xml||'<y_axis> ';
   l_xml := l_xml||'<scale minimum="1" type="Linear"/> ';
   l_xml := l_xml||'<title enabled="true"> ';
   l_xml := l_xml||'<text>Count</text> ';
   l_xml := l_xml||'</title> ';
   l_xml := l_xml||'</y_axis> ';
   l_xml := l_xml||'</axes> ';
   l_xml := l_xml||'</chart_settings> ';
   l_xml := l_xml||'<data_plot_settings default_series_type="Line"> ';
   l_xml := l_xml||'<line_series point_padding="0.2" group_padding="1"> ';
   l_xml := l_xml||'<label_settings enabled="true"> ';
   l_xml := l_xml||'<background enabled="false"/> ';
   l_xml := l_xml||'<font color="Rgb(45,45,45)" bold="true" size="9"> ';
   l_xml := l_xml||'<effects enabled="true"> ';
   l_xml := l_xml||'<glow enabled="true" color="White" opacity="1" blur_x="1.5" blur_y="1.5" strength="3"/> ';
   l_xml := l_xml||'</effects> ';
   l_xml := l_xml||'</font> ';
   l_xml := l_xml||'<format>{%YValue}{numDecimals:0}</format> ';
   l_xml := l_xml||'</label_settings> ';
   l_xml := l_xml||'<tooltip_settings enabled="true"> ';
   l_xml := l_xml||'<format> ';
   l_xml := l_xml||'Something: {%YValue}{numDecimals:0} ';
   l_xml := l_xml||'Date: {%Name} ';
   l_xml := l_xml||'</format> ';
   l_xml := l_xml||'<background> ';
   l_xml := l_xml||'<border type="Solid" color="DarkColor(%Color)"/> ';
   l_xml := l_xml||'</background> ';
   l_xml := l_xml||'<font color="DarkColor(%Color)"/> ';
   l_xml := l_xml||'</tooltip_settings> ';
   l_xml := l_xml||'<marker_settings enabled="true"/> ';
   l_xml := l_xml||'<line_style> ';
   l_xml := l_xml||'<line thickness="3"/> ';
   l_xml := l_xml||'</line_style> ';
   l_xml := l_xml||'</line_series> ';
   l_xml := l_xml||'</data_plot_settings> ';     
   l_xml := l_xml||'<data> '; 
   l_xml := l_xml||'<series name="Count"> ';     
   start_date := TO_DATE('01/01/2009');
   end_date   := TO_DATE('10/01/2009');
   the_date   := start_date;
   WHILE the_date <= end_date
   LOOP
    SELECT DECODE(COUNT(*),0,'Missing',COUNT(*))
    INTO the_count
    FROM evv_stpl
    WHERE date1 = the_date;
    l_xml := l_xml || '<point name = "'|| the_date ||'" y="'|| the_count ||'"/>';
    the_date := the_date + INTERVAL '1' DAY;
   END LOOP;
   l_xml := l_xml ||'</series> ';
   l_xml := l_xml ||'</data> ';
   l_xml := l_xml ||'</chart> ';
   l_xml := l_xml ||'</charts> ';
   l_xml := l_xml ||'</anychart>';
   HTP.p
<html>
<head>
<title>AnyChart Sample</title>
<script type="text/javascript" language="javascript" src="D:\oracle\product\10.2.0\apache\Apache\Apache\images\flashchart\AnyChart.js"></script>
<body>
<div id="chartDiv-1"></div>
    <script type="text/javascript" language="javascript">
    //<![CDATA[
    AnyChart.swfFile = ''D:\oracle\product\10.2.0\apache\Apache\Apache\images\flashchart\AnyChart.js'';
    var chart = new AnyChart();
    chart.width = "800";
    chart.height = "600";
    var data = '''
       || l_xml
       || ''';
    chart.setData(data);
    chart.write("chartDiv-1");
    //]]>
    </script>
</body>
</html>
END;Hopefully you understand what I'm trying to do here, unfortunately I can't try it out myself at the moment.
Maybe if you get stuck you could post it on apex.oracle.com?
Cheers
Ben
Oops, handled a count of zero incorrectly - amended
Edited by: Munky on May 7, 2009 1:17 PM