How to add a dynamic marker to a chart?

Hi, 
 
I have a problem ;-) 
 
In my actual report I have one dataset and create from this set an area chart. In this case no problem. But now I have the requirement to add dynamic markers to the chart. 
 
So, this is the example: 
 
Data Set: date | workload | type 
 
The report renders a chart, which displays the date on the x-Axis and the workload on the y-Axis. The Type shows the different areas in the chart. 
 
Now I need a marker (line marker) which doesn't have a linear value, but therefore a value for each date which is displayed on the x-Axis. 
 
On Birt-Exchange (<a class='bbc_url' href='http://www.birt-exchange.org/blog/2008-02-01/birt-chart-scripting-dynamic-markers/'>BIRT Chart Scripting: Dynamic Markers » Blog - BIRT Exchange</a>) is only a tutorial for static markers. So if anyone has an idea how to script this kind of marker, please feel free to answer ;-) 
 
Thanks in advance!

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Comments

mwilliams

Hi Infomatrix,

So, your marker line will not be of one value, but of different values for each value in the chart? If so, could you just use another series of line chart style to display this marker value?

Infomatrix

Yes, I need the multiple values in my chart. But at this time I am just using an Area Chart.
So is there a possibility to combine these chart types and can give me someone a short example?

Thank in advance!

mwilliams

What version of BIRT are you using?

Infomatrix

Actually I am using version 2.5.0.

mwilliams

Infomatrix,

Here's a quick example using the sample database that uses two different chart types in one chart for two different series'. This is done in the series section of the format chart tab in your chart editor. You can chance the 2nd - nth series to another type of chart.

Hope this helps for your situation.

Infomatrix

Hi,

I will try this at the weekend! Thank you very much for your fast help!

with regards

Infomatrixx

mwilliams

Infomatrixx,

Not a problem. Let me know.

Infomatrix

It seems, that this will help me. Thanks!

Has anyone a hint for a good book about BIRT Reporting with Eclipse?

mwilliams

Infomatrix, 
 
These are 3 popular ones: 
 
<a class='bbc_url' href='http://www.amazon.com/BIRT-Field-Guide-Reporting-2nd/dp/0321580273/ref=dp_ob_title_bk'>Amazon.com: BIRT: A Field Guide to Reporting (2nd Edition) (9780321580276): Diana Peh, Nola Hague, Jane Tatchell: Books</a> 
 
<a class='bbc_url' href='http://www.amazon.com/Integrating-Extending-BIRT-Jason-Weathersby/dp/0321580303/ref=pd_bxgy_b_text_b'>Amazon.com: Integrating and Extending BIRT (2nd Edition) (9780321580306): Jason Weathersby, Tom Bondur, Iana Chatalbasheva, Don French: Books</a> 
 
<a class='bbc_url' href='http://www.amazon.com/Practical-Data-Analysis-Reporting-BIRT/dp/1847191096/ref=pd_bxgy_b_text_c'>Amazon.com: Practical Data Analysis and Reporting with BIRT (9781847191090): John Ward: Books</a>