How do I modify the datatype of the y-axis in a Graph?

Question

I need to produce a simple graph that displays project names vs. dates. It is a simple query and should be a simple graph. However, the graph tool wants to display only NUMBER data-types on the y-axis. I need to display DATEs. What must I do?
Here is a query that I would like to use and below it is what I am forces to use to get the graph to display anything:
Query 1 (What I need to use):
select p.project_id, p.project_name, g.ANTICIPATED_GATE_DATE, g.ACTUAL_GATE_DATE
from project p, gate_split gs, gate g
where p.project_id = gs.project_id
and gs.gate_split_id = g.gate_split_id
and ((:P_START_DATE <= g.anticipated_gate_date or :P_START_DATE is null)
and (:P_END_DATE >= g.anticipated_gate_date or :P_END_DATE is null))
and g.ACTUAL_GATE_DATE is not null
order by g.anticipated_gate_date
Query 2 (What I must do to get anything to display on the Y-Axis):
select p.project_id, p.project_name, TO_NUMBER(TO_CHAR(g.ANTICIPATED_GATE_DATE, 'J'))anticipated_date, TO_NUMBER(TO_CHAR(g.ACTUAL_GATE_DATE, 'J'))acutal_date
from project p, gate_split gs, gate g
where p.project_id = gs.project_id
and gs.gate_split_id = g.gate_split_id
and ((:P_START_DATE <= g.anticipated_gate_date or :P_START_DATE is null)
and (:P_END_DATE >= g.anticipated_gate_date or :P_END_DATE is null))
and g.ACTUAL_GATE_DATE is not null
order by g.anticipated_gate_date

Answer 1

As I said drag the icon of the selected graphic to your Desktop.
Open it in Preview.app > Menu > Tools > Adjust Color…
Drag the combination of Temperature & Tint to change the Hue.
Drag the Exposure to change the Tone.
Save the .tiff with a new name eg Blue grass.tiff so you don't get confused and drag the image back into the Pages document image.
Peter