Hi Kroken,
Here is my personal opinion, and I'm by no means advanced user of this tools, but I wish I was.
I can not disagree with you with regards to, the lack of functionalities, but then again, which tool/software doesn't suffer from this? and that's why, R&D and software developers keep comping up with updates and enhancements in every new release. That's just the nature of software applications. This is by no means a justification, it's a fact, and that's why you see customers favor one Vendor over another, because of what the tools can offer out of the box.
When it comes to Report Design & Development, All BI tools vendors will agree on, having pre-aggregated data saves resources and speeds delivery of results and visuals to the end user. Their tools might have the ability to calculate these custom aggregates on the fly within the report, via custom calculations and what have you, but when start overloading/repeating these custom calculations over multiple reports and data sources, the performance starts taking a hit, and users start to notice delayes in response times and that leads to frustrations, despite all the Query Caching, and Parallel query capability thay may have put inplace!
When you watch or listen to their experts taking about techiques to enhance query/report performance, they all will advice on pushing the processing down to the database or utilize pre-aggregated data to minimize run-time processing.
The other thing to consider, most / if not all of these BI Tools, provide a data preparation tool of some sort for that purpose.
As a report designer, you would probably start with a scetch of the report on a peice of paper, then you start putting/building the visual objects together and assembling the final report. During that process, you would discover
- Report Objective / Focus Area
- Exact data requirements (details, aggregates, ratios, differences, ....etc)
- Visual Objects (native, custom built)
- Annotations
- Links
All I can say, don't get discouraged, no report happens in just few seconds, even the one you see in demos, they are all rehersed 😉
Check this blog for reference: How to design an infographic about volcanic eruptions using SAS Visual Analytics
For additional related blogs, Just go to http://blogs.sas.com/content/ and serch for "Visual Analytics"
Hope this helps,
Ahmed
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