Introduction
Purpose
Complete
guide on building dashboards using Excel, Access and any other Database as the
data source.
The tutorial will start with
instructions on building a dashboard using Excel
Files.
The
purpose is not just to build any dashboard but a good and useful dashboard that
is modular in design and easy to maintain and scale it.
Excel Dashboards
Databases
are often under lock-n-key of the IT Department and not possible to connect
directly due to security reasons. So if you plan to build a Dashboard prototype
or a Dashboard Mockup it makes sense to export the data to Excel and build it.
Modular Dashboard Design
Lot
of the online tutorials and Dashboard e-books teach you to build dashboard in
Excel file. They provide you with templates, you fill in the information and
build the dashboard using Excel charting techniques.
If
you use Excel Templates for your real dashboarding needs then you may end up
with any of the below problems.
·
Big Bulky and bloated excel files
·
Undocumented Macros
·
Zero verification on the data authencity
·
No way to refresh the dashboard (lost productivity)
“Best Practise for Dashboard Design”
Modular Design - Keep Data and
Presentation Separate
How?
– Use Excel only for storing your data. Nothing more. Do not build any
visualization in the same place where your Data resides.
Benefits of this
approach
·
Your dashboard or presenation layer is
independent –
Dashboard definition is stored separately
·
Increased productivity – When you have fresh data just refresh the dashboard, no
redevelopment needed
·
No Messy Excel Macros or coding knowledge required – Just drag and drop tables
and visually build Tables, Charts, Speedometer, Gauges, Dials, Thermometers and
more charts
·
Simplified Distribution
and Presentation – You can Export the Dashboard
to PDF or HTML and just send them as attachments
Save Time - Just build the dashboard presentation layer only once and
automate the refreshes
Data Preparation
Export
your transaction data to Excel file by running a report or requesting your IT
department.
There are certain rules to be followed
when you get the data in Excel files.
Here is a sample Excel dump of Order
Entry data.
The first row is always treated as the
column names.
If
you inherit an Excel file with pivots and charts all over the places then try
to copy just the raw data in another worksheet in the same file or create another
file. If it is not possible to keep the first row as the column names then you
could define “named ranges”. In the dashboard designer it is possible to
access the data using Cell ranges but then future updates to the Excel file could break the dashboard,
for e.g if the data goes beyond the
Cell range.
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