Generating JFreeChart Bar chart in jsp

Hi Everyone,
I have never worked with charts earlier. I created one demo for generating a bar chart using a java class. I am using awt classes here. Chart was rendered successfully on running this java class. My problem is i want to integrate this class with a JSP, by involving servlets. I tried to do it many a times now but yet not successfull.
My requirement is, on the hit of 'generate chart' in one jsp, bar chart should be rendered.
Can somebody plz help???
Thanks in advance

Has no update on the problem mentioned. However, you can try elegantj charts. It creates customized, dynamic charts in few minutes.
Link: www.elegantjcharts.com

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<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/204d1bb8-489d-2910-d0b5-cdddb3227820">An Easy Reference for OLE Automation</a>
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Thank you all for your replies so far:
@Alex: You are right, using your short script in sqlplus gives me also 2009 as result
So, I am now posting the essential excerpts of the procedure because the whole one is to large:
function insert_szrl (my_fremd_name varchar, my_elementadresse varchar,
my_zeitstempel varchar, my_wert float,
my_status varchar, my_zyklus varchar,
my_offset integer,
my_quelle varchar, my_nzm_daten integer) return integer is
begin
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end if;
While debugging the complete procedure I see since the start only a date which looks like '01.04.2009 07:00:00'
Edited by: user10994305 on 19.05.2009 15:58
Edited by: user10994305 on 19.05.2009 15:58

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Stacked bar chart with single group

Post Author: rt50896
CA Forum: Charts and Graphs
Dear all,   I have a question about stacked bar chart with one group value(normally more than one group value is ok)   ex. YYYYMM      PRODUCT    AMT        -
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Thanks, Jeff. I did try this but for whatever reason it doesn't make a difference. I think it is because if there's no data for a given series for a certain week, there is no entry in the data set that is sent to AnyChart.
I was able to get around the issue by "filling in" the missing weeks from each data series. To generate the list of "Week Of" dates for a given date range, I used this code:
select
     trunc (each_day) as week_of,
     0 as effort
from (
     select
          (to_date(:p920_start_date,:app_date_format) + 2 - to_char(to_date(:p920_start_date,:app_date_format),'D') - 1) + level each_day
     from dual
     connect by level <= to_date(:p920_end_date,:app_date_format) - to_date(:p920_start_date,:app_date_format) + 1
where
     to_char (each_day, 'D') = '2'This creates an effort entry of 0 for each week within the date range; I use the Monday date of a week as the "Week Of" date. I then union this with my actual data and summarize by week and viola, I get the weeks in order. This also has the benefit of showing a week for which there are no entries in any of the three series.
Thanks for taking a look at this.
Mike

Stacked Bar Chart with Multiple Series Sort Question

Hi,
Apex version 4.1.1
I have a stacked bar chart with three separate series, one showing customer effort, another showing project effort and the third showing other effort, summarized by calendar week. The x-axis of the chart is the calendar "week of" date, and the y-axis has a bar for each of the three series. Not every type of effort occurs every week.
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Thanks, Jeff. I did try this but for whatever reason it doesn't make a difference. I think it is because if there's no data for a given series for a certain week, there is no entry in the data set that is sent to AnyChart.
I was able to get around the issue by "filling in" the missing weeks from each data series. To generate the list of "Week Of" dates for a given date range, I used this code:
select
     trunc (each_day) as week_of,
     0 as effort
from (
     select
          (to_date(:p920_start_date,:app_date_format) + 2 - to_char(to_date(:p920_start_date,:app_date_format),'D') - 1) + level each_day
     from dual
     connect by level <= to_date(:p920_end_date,:app_date_format) - to_date(:p920_start_date,:app_date_format) + 1
where
     to_char (each_day, 'D') = '2'This creates an effort entry of 0 for each week within the date range; I use the Monday date of a week as the "Week Of" date. I then union this with my actual data and summarize by week and viola, I get the weeks in order. This also has the benefit of showing a week for which there are no entries in any of the three series.
Thanks for taking a look at this.
Mike

Generating JFreeChart Bar chart in jsp

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