You are correct - the reference line option is not available in the combo chart, I am not sure if it will be added, but I will inform our PM group.
In the mean-time - you can possibly calculate a trend or reference line using Qlik expressions. Check out the sample and solution to this post: http://community.qlik.com/message/590193
Let us know how you do.
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Hello Michael- Do you know if the Reference Line functionality made it into the pipeline for the next release? This is a very useful feature. I have a set of incident data that I am working to visualize on a combo chart. It will have the date of the incident and the length of time it took to resolve. Is there a way to add a solid horizontal line to the chart showing the Mean Time to Resolution (i.e. Average incident length) over all the date dimensions. Your equation referenced above almost gets there but I don't want trending.
Thanks for the help!
i know this post is very old, but seems my problem still isn't solved....?
The sample in the link you mentioned was more about trend lines,
i am more interested in reference lines.
now, i know i can (and did) add another experssion as line and form it to be my value(f.e. 80%)
and that works fine.
the problem is that it is also effect by the color expression like the other measures.
so if i have different colors for ABC analysis, the 80% ref line needs to remain black.
so its a nice workaround.....but still would be nice to be able to have a place for a trend/reference line and sense will show it (ideally with a separated dynamic color expression )
or....may be there is, and i just don't know about it