Qlik Sense Cookbook

Qlik Sense Cookbook

By : Philip Hand, Neeraj Kharpate

Buy this Book

Qlik Sense Cookbook

By: Philip Hand, Neeraj Kharpate

Buy this Book

Overview of this book

This book is an excellent guide for all aspiring Qlik Sense® developers. It will take you through the basics, right through to the use of more advanced functions. With the recipes in this book, you will be empowered to create fully featured desktop applications in Qlik Sense®. Starting with a quick refresher on obtaining data from data files and databases, this book moves on to the more refined features of Qlik Sense®, including visualization, scripting, and set analysis. The tips and tricks provided will help you to overcome challenging situations while developing your applications in Qlik Sense®. This and more will help you to deliver engaging dashboards and reports efficiently. By the end of the book, you will be an expert user of Qlik Sense® and will be able to use its features effectively for business intelligence in an enterprise environment.

Qlik Sense Cookbook

Credits

Foreword

About the Authors

About the Reviewers

www.PacktPub.com

Preface

Free Chapter

Getting Started with the Data

Introduction

Extracting data from databases and data files

Extracting data from Web Files

Activating the Legacy Mode in Qlik Sense desktop

Extracting data from custom databases

Invoking help while in the data load editor or the expression editor

Previewing data in the Data model viewer

Creating a Master Library from the Data model viewer

Using a Master Library in the Edit mode

Visualizations

Introduction

Creating Snapshots

Creating and adding content to a story

Adding embedded sheets to the story

Highlighting the performance measure in a bar chart

Associating persistent colors to field values

Using the ColorMix1 function

Structuring visualizations

Scripting

Introduction

Structuring the script

Efficiently debugging the script

Packaging the code in script files

How to use sub routines in Qlik Sense

Optimizing the UI calculation speed

Optimizing the reload time of the application

Using a For Each loop to load data from multiple files

Using the Concat function to store multiple field values in a single cell

Managing Apps and User Interface

Introduction

Publishing a Qlik Sense application created in Qlik Sense desktop

Creating private, approved, and community sheets

Publishing a Qlik Sense application to Qlik Sense cloud

Creating geo maps in Qlik Sense

Reference lines in Sales versus Target gauge chart

Effectively using the KPI object in Qlik Sense

Creating Tree Maps

Creating dimensionless bar charts in Qlik Sense

Adding Reference Lines to trendline charts

Creating text and images

Applying limitations to charts

Adding thumbnails – a clear environment

Navigating many data points in a scatter chart

Useful Functions

Introduction

Using an extended interval match to handle Slowly Changing Dimensions

Using the Previous() function to identify the latest record for a dimensional value

Using the NetworkDays() function to calculate the working days in a calendar month

Using the Concat() function to display a string of field values as a dimension

Using the Minstring() function to calculate the age of the oldest case in a queue

Using the Rangesum() function to plot cumulative figures in trendline charts

Using the Fractile() function to generate quartiles

Using the FirstSortedValue() function to identify the median in a quartile range

Using the Declare and Derive functions to generate Calendar fields

Setting up a moving annual total figure

Using the For Each loop to extract files from a folder

Using the Peek() function to create a currency Exchange Rate Calendar

Using the Peek() function to create a Trial Balance sheet

Set Analysis

Introduction

Cracking the syntax for Set Analysis

Using flags in Set Analysis

Using the = sign with variables in Set Analysis

Point in time using Set Analysis

Using comparison sets in Set Analysis

Using embedded functions in Set Analysis

Creating a multi-measure expression in Set Analysis

Using search strings inside a set modifier

Capturing a list of field values using a concat() function in Set Analysis

Using the element functions P() and E() in Set Analysis

Extensions in Qlik Sense

Introduction

Creating an HTML visualization extension for Qlik Sense

Defining a Properties panel in Qlik Sense visualizations

Creating custom components within Qlik Sense visualizations

Using data with extensions

What's New in Version 2.1.1?

Introduction

Using the visual exploration capability in Qlik Sense 2.1.1

Defining variables in Qlik Sense

Exporting stories to MS PowerPoint

Using the Qlik Dev Hub in Qlik Sense 2.1.1

Using Extension editor in Qlik Dev Hub

Using Qlik Dev Hub to generate mashups

Embedding Qlik Sense application on a website using a single configurator

Using the Qlik DataMarket

Creating dynamic charts in Qlik Sense

Using Smart Search

Using smart data load profiling

Conclusion

Appendix

Keyboard shortcuts in Qlik Sense Desktop

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Previewing data in the Data model viewer

As any experienced Qlik developer will tell you, the data model viewer is a key component you will undoubtedly spend time using on your Qlik journey. Qlik Sense has brought with it some nice new features. We will also delve into the different insights that can be gleaned from the data model viewer:

Getting ready

For this recipe, we will make use of the Data model viewer.qvf application. This file is available for download on the Packt Publishing website.

How to do it…

Open the Data model viewer.qvf application that has been downloaded from the resource library.
Click on data model viewer in the Navigation dropdown on the toolbar.

How it works...

In this section we will see how the different types of data are viewed.

Viewing the data model

The data model consists of a number of tables joined by the key fields. The following screenshot contains functions that can be used to manipulate the layout of the data model:

The detail of the available keys (from right to left) is given as follows:

Collapse all: This reduces down the tables to just their headers; thus, hiding all the fields
Show linked fields: Expands the tables enough to only display the key fields in each
Expand all: Displays all the fields for each table
Internal Table viewer: Shows the internal representation of the data model
Layout: Provides options to auto align the table grid or space out across the screen
Preview: Toggles the data preview screen to either on or off

Viewing the associations

Clicking on a table will highlight its associated tables in orange. The customer's table is selected in the following screenshot and the shared key here is Address Number:

Click on the CustomerAddress table to see a highlighted expansion, via the state key, as shown:

Table Meta Data

The data model viewer also provides information on the contents of each table.

Click the header of the customer address table then open the Preview pane by clicking the Preview button in the bottom left hand corner.

The following preview will be displayed at the bottom of the screen:

Along with a small snippet of the table contents, the far left table also provides some high level table information about the number of rows, fields, keys as well as any tags.

Next, click the Address Number field from the Customers table in the data model viewer.

You can now see more detailed information about the individual field.

These are:

Density
Subset ratio
Has duplicates
Total distinct values
Present distinct values non-null values
Tags

This information is very helpful when we are debugging issues. If a count does not return the expected result, you may want to ensure that there are no duplicates.

If a selection is not filtered correctly you may want to check the sub-set ratio of the key and so on.

There's more...

Double clicking a table header in the data model viewer will either collapse or expand the table fully.

Qlik Sense Cookbook

By : Philip Hand, Neeraj Kharpate

Qlik Sense Cookbook

By: Philip Hand, Neeraj Kharpate

Overview of this book

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Current Title:

Qlik Sense Cookbook

Previewing data in the Data model viewer

Getting ready

How to do it…

How it works...

Viewing the data model

Viewing the associations

Table Meta Data

There's more...