Flash 2D Line chart

Question

I have a chart region - Flash 2D Line chart with two series based on different tables, both with dates along the X axis
and a figure that represents hours up the Y axis. The idea is for two lines to be displayed on the same graph so they can be
easily compared.
series 1
select null link, END_DATE label, PROJECTED_HOURS Projected_hours
from "E_LOGBOOK"."TEST_PROJECTED"
30/07/2009 700
09/08/2009 800
27/08/2009 9000
series 2
select null link, LIFING_DATE label, ACTUAL_HOURS Current_Hours
from "E_LOGBOOK"."TEST_ACTUAL"
30/07/2009 800
09/08/2009 1000
27/08/2009 12000
When I run the chart with the data above it displays as I would expect, the dates label in chronological order along the bottom with the Correct value plotted for each series.
However if I insert a row into the LIFING_DATE table (second series) so it contains additional data for the 14/08/2009
30/07/2009 800
09/08/2009 1000
14/08/2009 1201
27/08/2009 12000
And then re run the chart this last date and value displays to the right of the existing dates so we have 30/07/2009 09/08/2009 27/08/2009 then 14/08/2009 along the X axis.
I would have expected the new data to fit in the existing range so that 30/07/2009 09/08/2009 14/08/2009 27/08/2009 would display along the bottom.
I am an oracle forms programmer new to APEX (and html, javascript,XML etc) trying to prepare a demo to my manager of what we can do with apex so any help appreciated.
If possible is there a solution without using Third party apps or bi publisher.
Thanks Pete

Answer 1

Hi Andy,
Thanks for your quick response. If I'm correct in understanding what your saying is that with 2D Line charts that have two series in order for them to display togethor then the label must appear in both series.
I've had a bash using your sql for the 1st series and modifying the second series.
Series 1
SELECT NULL LINK,
X.THE_DATE LABEL,
Y.PROJECTED_HOURS VALUE
FROM
(SELECT END_DATE THE_DATE FROM TEST_PROJECTED
UNION
SELECT LIFING_DATE THE_DATE FROM TEST_ACTUAL
) X
LEFT OUTER JOIN TEST_PROJECTED Y ON X.THE_DATE = Y.END_DATE
ORDER BY X.THE_DATE
07/30/2009 700
08/09/2009 800
08/14/2009
08/27/2009 9000
Series 2
SELECT NULL LINK,
X.THE_DATE LABEL,
Y.ACTUAL_HOURS VALUE
FROM
(SELECT END_DATE THE_DATE FROM TEST_PROJECTED
UNION
SELECT LIFING_DATE THE_DATE FROM TEST_ACTUAL
) X
LEFT OUTER JOIN TEST_ACTUAL Y ON X.THE_DATE = Y.LIFING_DATE
ORDER BY X.THE_DATE
07/30/2009 800
08/09/2009 1000
08/14/2009 1201
08/27/2009 12000
This is a great improvement the series 2 now displays fine and all the points for series 1 are plotted correctly but it seems like the null value prevents the joining of the coordinates in this series. All the points 700,800 and 9000 are displayed correctly but the graph line only joins 700 and 800.
Any further ideas? Thanks Pete