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a question about y-axis [message #955763]

Wed, 24 October 2012 02:16

Candace Chen

Messages: 5
Registered: October 2012

Junior Member

<Max xsi:type="data:NumberDataElement">
<Value>-5.0</Value>
</Max>

Do someone know how to set y-axis maximum(image1) value become a negative value(image2) ?
origin:
index.php/fa/12027/0/

after:

Attachment: before.jpg
(Size: 27.22KB, Downloaded 643 times)
Attachment: after.jpg
(Size: 27.43KB, Downloaded 614 times)

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Re: a question about y-axis [message #958095 is a reply to message #955763]

Thu, 25 October 2012 19:02

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

In your case, you could just grab the axis label and modify its value to remove the '-' or add the '-', in script. Let me know if you need an example of this.

Michael

Developer Evangelist, Silanis

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Re: a question about y-axis [message #958391 is a reply to message #955763]

Fri, 26 October 2012 00:43

Candace Chen

Messages: 5
Registered: October 2012

Junior Member

sorry, i need y-axes Value changes and chart follow to change too , like the example chart. thanks

index.php/fa/12084/0/

Attachment: q1.jpg
(Size: 66.72KB, Downloaded 674 times)

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Re: a question about y-axis [message #958443 is a reply to message #958391]

Fri, 26 October 2012 01:39

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

My mistake. The easiest way I can see, to do this is to create a computed column that multiplies your axis #2 field by -1, plot this field on your second axis and then do what I said above and reverse the positive and negative values in the labels. Let me know you BIRT version if you need an example.

Michael

Developer Evangelist, Silanis

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Re: a question about y-axis [message #958476 is a reply to message #958443]

Fri, 26 October 2012 02:14

Candace Chen

Messages: 5
Registered: October 2012

Junior Member

My version 2.3.2.r232 and can you gvie me example ??

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Re: a question about y-axis [message #958527 is a reply to message #955763]

Fri, 26 October 2012 03:14

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

Take a look at this report. I used a scripted dataSet to recreate data similar to yours, so instead of creating a computed column in the dataSet, I made one in the chart by going to the select data tab and selecting the data bindings button and adding a binding. You can see it there. I then used this value for the second series. Finally, I reversed the values, in the second yaxis, in the chart's script. Hope this helps.