Trying to create a heat map

Question

I am trying to recreate this kind of report and need some example code
http://bp2.blogger.com/_F4cjbG7L4no/RyRmRZSz2vI/AAAAAAAAAAM/frAGvZrcyo8/s1600-h/linecalimage.jpg
I require the table cells to appear as colors based on if the value is null or not null
When the user mouse overs the cell they should see some values.
I have tried every option I could google and either I get the colors or the mouseover but not both.
If someone could point me to a good example or walk through for this it would be great.
Thanks in advance.

Answer 1

Create a view in your schema maybe like this...
CREATE OR REPLACE VIEW V_HEATMAP AS
SELECT
CASE
WHEN (t.COL001 IS NULL) THEN
'<div style="background-color:red">'
|| '<a href="'
|| '#'
|| '" title="'
|| t.COL002
|| '">'
|| '      '
|| '</a>'
ELSE
'<div style="background-color:green">'
|| '<a href="'
|| '#'
|| '" title="'
|| t.COL003
|| '">'
|| '      '
|| '</a>'
END AS demo_col
FROM demo_table t;Add a SQL report to the page, make the report source like:
SELECT * FROM V_HEATMAP;Edited by: cmcneil on Mar 24, 2009 3:35 PM
Edited by: cmcneil on Mar 24, 2009 3:46 PM
Edited by: cmcneil on Mar 26, 2009 1:36 PM - found the code tag :)