How to extract YEAR from a string?

Kaloki

Hi,

I have this attribute in a dataset that is a string of text :

• Name: "Angove's 2006 Red Belly Black Shiraz (South Australia)"

How do I create a new attribute, say Vintage and get to have only the year, e.g. 2006 in this case as the value of the new attribute?

• Vintage: 2006

Appreciate any support.
Am using generate attribute operator, but can't quite work out the syntax correctly...
Thanks.

kayman

use regex. If there are no other numbers in your string it is pretty easy, then you use someting as

replaceAll([myField],"\\D","")

Read as 'remove everything that's not a digit', so what is left will be your year.

If there are other numbers you can use a range, assuming that your years will go from 2000 to 2019 you could use something like

replaceAll([myField],"^.*?(20[0-9]{2}).*$","$1")

wich reads as 'start at the beginning of string, and if you find something starting with 20 followed by 2 other digits, store it and remove everything else.

If you can also have older years you could try as follows : 

replaceAll([myField],"^.*?([12][0-9]{3}).*$","$1")

so now you look at a patters starting either with a 1 or a 2, followed by 3 other digits.

Not foolproof depending on your data, but it might do what you need

Telcontar120

You may also want to consider trying to parse your text field even further to separate out other information such as the geography, the vineyard, etc.  You can use Split or Tokenize for that purpose.