article The second dimension... or how to use secondarydimensionality() in Member Articles

The second dimension... or how to use secondarydimensionality()

robert_mika — Sun, 22 Feb 2015 23:38:12 GMT

Prologue...

Firstly I would like to say that probably it would be easier to call this function Horizontal Dimensionality (or HDim or even SecDim)

This could clear some clouds - when you first see this function you may feel that this another level for dimensionality function.

(for those who wants to know more about the dimensionality function please see this document

How to use - Dimensionality()

What it is used for?

Returns the number of dimension pivot table rows that have non-aggregation content. i.e. do not contain partial sums or collapsed aggregates. This function is the equivalent of the dimensionality function for horizontal pivot table dimensions.

The secondarydimensionality() function always returns 0 when used outside of pivot tables.

What does it mean?

Where dimensionality shows number of vertical dimensions, secondarydimensionality shows number of horizontal dimensions.

Lets take our sample data.

We have four dimensions(columns):

Product,Category,Type and Sales.

Each Product have 2 Categories

Each Category can have up to 3 Types

Let's create Pivot Table using 3 of those Dimension Product,Category and Type and use Sales as our Expression.

This Pivot Table has 3 dimensions so its maximum dimensionality is 3.

'Sugar' has dimensionality of 1 which is Total for that 'Product'.

'Salt' has dimensionality of 2 which is Total for each 'Category' of that 'Product'.

'Oil' has dimensionality of 3 which is single value for each 'Type' of the 'Product's' 'Category'

So in few words : secondarydimensionality (and dimensionality) is the number of dimensions used in a Table

For better understating please see table below:

The function is used to show on which dimensionality level each of the Pivot Table row is:

Practical use:

1) To show the level of dimensionality:

Expression:

if(secondaryDimensionality()=1,RGB(151,255,255),if(secondaryDimensionality()=2,RGB(0,238,0),

if(secondaryDimensionality()=3,RGB(255,130,171))))

2) Highlight background of rows which on each level fall into certain condition:

Expression:

if(Dimensionality()=1 and sum(Sales)<150,RGB(151,255,255),if(Dimensionality()=2 and sum(Sales)<=20,RGB(0,238,0),if(Dimensionality()=3 and Sum(Sales)<=20,RGB(255,130,171))))

LEVEL 1 --> Values <35	LEVEL 2 --> Values <=15	LEVEL 3 --> Values <=20

Remember

To use the script below the Excel file must be saved in the same folder that your qvd file

Otherwise you will need to make changes the this path - secondarydimensionality.xlsx

Directory;

LOAD Product,

Category,

Type,

Sales

FROM

secondarydimensionality.xlsx

(ooxml, embedded labels, table is Sheet1);

Still feeling hungry?

How to use - Only()

Do you Qualify?- How to use QUALIFY statement

How to use - Dimensionality()

Missing Manual - GetFieldSelections() + Bonus Example

MaxString & MinString - How to + examples

The second dimension... or how to use secondarydimensionality()

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Re: The second dimension... or how to use secondarydimensionality()

mithilesh17 — Thu, 02 Apr 2015 12:12:14 GMT

Tricky to understand,but got it finally. Thanks Robert_Mika‌ again as always!

Re: The second dimension... or how to use secondarydimensionality()

robert_mika — Thu, 02 Apr 2015 12:32:34 GMT

You are welcome.

Re: The second dimension... or how to use secondarydimensionality()

Anonymous — Wed, 13 May 2015 14:59:10 GMT

Never a day, I don't learn something new about Qlikview. Thanks for sharing Robert.

Re: The second dimension... or how to use secondarydimensionality()

avinashelite — Wed, 02 Mar 2016 13:00:21 GMT

Nice document with examples

Re: The second dimension... or how to use secondarydimensionality()

harsh44_bhatia — Sun, 17 Jul 2016 20:57:02 GMT

Another use case of secondarydimensionality() Function:

https://community.qlik.com/message/982529#982529

Re: The second dimension... or how to use secondarydimensionality()

Tue, 16 Aug 2016 03:03:57 GMT

Another good use of function

Re: The second dimension... or how to use secondarydimensionality()

Anonymous — Sat, 08 Oct 2016 02:55:10 GMT

Good analysis, I suggest look dimentionality() , given link in the present document to better understand

secondarydimensionality().

Reagards

Pavan N

Re: The second dimension... or how to use secondarydimensionality()

v_petrenko — Fri, 25 Nov 2016 09:13:15 GMT

Excellent article, Robert, but I couldn't resist of removing the following categories that it shouldn't belong to. Just for keeping their contents as clean as possible.

Deployment

Developer Toolkit

Direct Discovery

Integration

Management