Line Chart Problem, multiple point in X axis

Question

I need to create a line chart , with many data points between two points in the X-Axis.
For example,
for month january my reading is 4,3,5,2,8
for month feb my reading is 1,5,3,5,2
I need only two points in X axis, which are january and feb and all the reading should come in gaph.
I am attaching a picture of the graph i required. Can any one help me how should i fill the arraycollection or XML in order to get the graph.

Answer 1

Here is a script which will illustrate how to conditionally display the X-axis label on a line chart:
DROP TABLE tmp_test_data;
CREATE TABLE tmp_test_data
(date_stamp DATE,
  value      NUMBER);
BEGIN
  dbms_random.seed(1234535678);
  FOR i IN 1 .. 233 LOOP
    -- get a random integer between 1 and 100
    INSERT INTO tmp_test_data
     (date_stamp, value)
    VALUES (TRUNC(SYSDATE)-i, dbms_random.VALUE(1,100));
  END LOOP;
END;
SELECT NULL link, CASE WHEN MOD(day,7) = 0 THEN day ELSE NULL END label, value
  FROM (SELECT date_stamp, value, ROW_NUMBER() OVER (ORDER BY date_stamp) day
         FROM tmp_test_data a
         WHERE date_stamp >= TRUNC(SYSDATE)-90
         ORDER BY date_stamp) b
;There may be a better way to do this. I know this will work.
Mike