Book Image

QlikView: Advanced Data Visualization

By : Miguel Angel Garcia, Barry Harmsen, Stephen Redmond, Karl Pover
Book Image

QlikView: Advanced Data Visualization

By: Miguel Angel Garcia, Barry Harmsen, Stephen Redmond, Karl Pover

Overview of this book

QlikView is one of the most flexible and powerful business intelligence platforms around, and if you want to transform data into insights, it is one of the best options you have at hand. Use this Learning Path, to explore the many features of QlikView to realize the potential of your data and present it as impactful and engaging visualizations. Each chapter in this Learning Path starts with an understanding of a business requirement and its associated data model and then helps you create insightful analysis and data visualizations around it. You will look at problems that you might encounter while visualizing complex data insights using QlikView, and learn how to troubleshoot these and other not-so-common errors. This Learning Path contains real-world examples from a variety of business domains, such as sales, finance, marketing, and human resources. With all the knowledge that you gain from this Learning Path, you will have all the experience you need to implement your next QlikView project like a pro. This Learning Path includes content from the following Packt products: • QlikView for Developers by Miguel Ángel García, Barry Harmsen • Mastering QlikView by Stephen Redmond • Mastering QlikView Data Visualization by Karl Pover
Table of Contents (25 chapters)
QlikView: Advanced Data Visualization
Contributors
Preface
Index

Understanding Dollar-sign Expansion


Dollar-sign Expansion is a process that allows us to replace text in an expression, or line of script, with either the value of a variable or some other calculation.

Suppose that we have a variable with a value of 10 and we write an expression like the following:

Sum(If(Field1=$(vValue), 1, 0))

The Dollar-sign expression, $(vValue), will get expanded to its value (10) and the expression that gets executed will be as follows:

Sum(If(Field1=10, 1, 0))

We can also have a calculation inside the Dollar-sign expression like the following:

If(Year=$(=Year(Today())), LightGreen())

In this case, the function Year(Today()) will be calculated and its value replaced into the main expression in the following manner:

If(Year=2014, LightGreen())

We do have to be aware that it is the exact value of the Dollar-sign expression that is replaced into the main expression, and it becomes as if we have typed that value there. Therefore, if it is a string value rather than a numeric value...