simple explanation for different values prop and evar? | Community
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vitalin58577727
Level 4
December 14, 2018
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simple explanation for different values prop and evar?

  • December 14, 2018
  • 13 replies
  • 16423 views

Hello, everyone,

maybe someone can help me?

In order to understand what prop and evar are, I have read some here.

https://webanalyseaufdeutsch.de/2012/01/17/traffic-variables-variablen-in-sitecatalyst-i/

https://webanalyseaufdeutsch.de/2012/01/17/traffic-variables-variablen-in-sitecatalyst-i/

but to better understand and touch this I have a variable which is stored in two different variables.

There is a variable on the page for the status code of the page:

So I have stored the respective status 1x in a prop and 1x in an evar.

And absolutely different values come out.

Can anyone explain this to me?

Hallo alle zusammen,

vielleicht kann mir jemand helfen?

Um zu verstehen was prop und evar sind, habe ich hier einiges gelesen.

https://webanalyseaufdeutsch.de/2012/01/17/traffic-variables-variablen-in-sitecatalyst-i/

https://webanalyseaufdeutsch.de/2012/01/17/traffic-variables-variablen-in-sitecatalyst-i/

Um das jedoch noch besser zu verstehen und das anfassen zu können habe ich eine Variable welche in zwei unterschiedliche Variablen gespeichert.

Es gib auf der Seite eine Variable für den StatusCode der Seite:

Also habe ich den jeweiligen Status 1x in eine prop und 1x in eine evar gespeichert.

Und es kommen absolut unterschiedliche Werte raus.

Kann mir das jemand erklären?

Best answer by Urs_Boller

Hi vitalin58577727​

you have several problems in your setup:

1) prop vs. evar:

a prop only saves the value on a single hit when you set the value! that means your occurencies should be the amount of times you send the prop to the database (reportsuite).

an eVar keeps the value as long as you defined. to see an equal metric (counter when eVar is set) take the corresponding "Instance" metric. adding "eVar41 Instances" will show you the amount of times the eVar appears in the server call. But since eVar keep the value (in the database/reporting) you can see the the counter for those hits as well using "occurencies". that means this metric shows you athe amount of times where the eVar is set OR the database still knows the vaule.

I recommend the following article about the difference of "instances vs. occurencies":

- Compare page views, instances, and occurrences

- https://webanalyseaufdeutsch.de/2017/10/03/die-occurences-metrik/

2) eVar settings

Having a closer look at your aVar I saw that you set it as "merchandising eVar". this is kind of a soecial eVar and might not be what you want.

13 replies

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alv123456
Level 5
January 7, 2019

In short: You can neglect props, you only need them if you need a pathing report. Then you need to enable it. Otherwise I have never seen it being used.

Urs_Boller
Community Advisor
Urs_BollerCommunity Advisor
Community Advisor
January 7, 2019

hi alv123456​

sorry, I can't agree about neglecting props. It's true that they are not very useful, but there are still some cases where I love to use them ("entry/exit dimension" and "list props" are just 2 cases).

I agree that for new users it's easier just to know about evars (as you mostly use them for reporting), but as soon as you are in a position where you are responsible for an analytics implementation, I strongly recommend that you know the differences about evars and props

V
vitalin58577727Author
Level 4
January 8, 2019

Hello, Urs,

Thank you very much for the detailed answer, I will read that in detail.

@alv123456

Thanks, 

I didn't know that.

I thought all the metrics are mapped over props.

BR,

Vitali

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