Book Image

QlikView for Developers Cookbook

By : Stephen Redmond
Book Image

QlikView for Developers Cookbook

By: Stephen Redmond

Overview of this book

QlikView has been around since 1993, but has only really taken off in recent years as a leader in the in-memory BI space and, more recently, in the data discovery area. QlikView features the ability to consolidate relevant data from multiple sources into a single application, as well as an associative data model to allow you to explore the data to a way your brain works, state-of-the-art visualizations, dashboard, analysis and reports, and mobile data access. QlikView for Developers Cookbook builds on your initial training and experiences with QlikView to help you become a better developer. This book features plenty of hands-on examples of many challenging functions. Assuming a basic understanding of QlikView development, this book provides a range of step-by-step exercises to teach you different subjects to help build your QlikView developer expertise. From advanced charting and layout to set analysis; from advanced aggregations through to scripting, performance, and security, this book will cover all the areas that you need to know about. The recipes in this book will give you a lot of the information that you need to become an excellent QlikView developer.
Table of Contents (19 chapters)
QlikView for Developers Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating a dynamic AGGR expression for a Group dimension using Dollar Expansion


AGGR is very useful for advanced aggregations. However, we need to be careful when using it in charts that have a Group dimension; either cycle or drill.

In this recipe, we will see how to overcome this using a Dollar Expansion.

Getting ready

This example follows along from the previous section. Load the data and create the straight table with the AGGR expression.

How to do it...

Follow these steps to create a dynamic AGGR expression for a group dimension:

  1. In Document Properties | Groups, create a group called Cycle1 with ProdID and Month as the dimensions:

  2. Edit the straight table and add Cycle1 as the second dimension.

  3. Save the changes and look at the chart. Note that the expressions do not calculate correctly for all the different cycle values.

  4. Open the properties of the table and edit the Sales $ expression:

    Sum(
    AGGR(Sum(Price*Qty)/ExRate, Country, [$(=GetCurrentField(Cycle1))])
    )
  5. Click on OK to save the chart:

  6. Click...