Webi - Count Function to retrive the number of value(x)

Hi All ,

In webi , I would like to Count Dimension against Measure.

Material     Rating

AAA          1

AAA          1
AAA          2
AAA          2

AAA          3

ABC          3

ABC          2
ABC          2

ABC          3

ABB          1

ABB          1

ABB          2

From the Above Table I would like to count the Number of Rating against Each Material.

Output Should be display as below.

Material      Rating Count

AAA              1         2

AAA              2         2

AAA              3         1

ABC              2         2

ABC              3         2

ABB              1         2

ABB              2         1

From the above table I have to use Rating as Filter.

Material - Dimension

Rating - Measure

Eg : =Count([Material] Where ([Rating]=1)

I need the Syntax for the data to retrieve from the above Scenario.

Thanks in Advance

PS