Need Help Numbering a Group

[#1]

I'm struggling with the following problem. 

I currently have the following data:

Person	Date
Person1	3/1/2015
Person1	6/1/2015
Person1	10/2/2015
Person2	3/15/2015
Person2	4/15/2015
Person2	09/20/2015
Person3	1/2/2015

I would like to iterate through the data and create a third column that numbers the two columns above in chronological order for each unique "person" value.  The data would look like table below. 

Person	Date	Number
Person1	3/1/2015	1
Person1	6/1/2015	2
Person1	10/2/2015	3
Person2	3/15/2015	1
Person2	4/15/2015	2
Person2	09/20/2015	3
Person3	1/2/2015	1

Thanks in advance. 

[simenkg]

temp:

Load Person, Dates from file;

Fact:

Load Person, Date, if(Peek(Person) = Person, Peek(Number)+1, 1) as Number

Resident temp order by Dates asc;

Drop table temp;

[MK_QSL · Accepted solution]

LOAD AutoNumber(Person&Date,Person) as Number,
  Person, 
     Date
FROM
[https://community.qlik.com/thread/185296]
(html, codepage is 1252, embedded labels, table is @1);

[#4]

This worked perfectly.  Thank you.

Craig Linderman

[MK_QSL]

Kindly close the thread by selection correct answer !