How to get difference of summaries at the dimension level?

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Guruprasad Paduthonse

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Aug 8, 2016, 1:44:57 AM8/8/16
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Hi,

I need to know if I can use expression to find out difference of summaries at the dimension level?

Eg: I need to know difference of amounts for January and February 

Below is my model. In the model below I would like to know difference of "basiccost_sum" between two months say January and February

{
    "dimensions": [
           {"name":"grinmodified",
  "levels": [
{
"name":"category_name",
"label":"Category name",
"attributes": ["category_name"]
},
{
"name":"country",
"label": "Country",
"attributes":["country"]
},
  {
"name":"item",
"label":"Item",
"attributes": ["item"]
},
  {"name":"month",
"label":"Month",
"attributes":["month"]
  }
  ],
  "hierarchies": [
{
"name":"category_hierarchy",
"label":"Category wise",
"levels":["category_name","item"]
},
{
"name":"country_hierarchy",
"label":"Country wise",
"levels":["item","country"]
},
{
"name":"month_heirarchy",
"label":"Month wise",
"levels":["month","item"]
}
  
  ]
  }
  
 
    ],
    "cubes": [
        {
"name": "grinmodified",
            "dimensions": ["grinmodified"],
            "measures": [
                {"name":"quantity", "label":"Quantity"},
{"name":"landed_cost_inr", "label":"Landed Cost"},
{"name":"basic_cost_inr", "label":"Basic Cost"},
{"name":"tax_inr", "label":"Tax"}
            ],
            "aggregates": [
                    {
                        "name": "quantity_sum",
                        "function": "sum",
                        "measure": "quantity"
                    },
{
                        "name": "lc_sum",
                        "function": "sum",
                        "measure": "landed_cost_inr"
                    },
{
                        "name": "basiccost_sum",
                        "function": "sum",
                        "measure": "basic_cost_inr"
                    },
{
                        "name": "tax_sum",
                        "function": "sum",
                        "measure": "tax_inr"
                    },
{"name":"unit_basic_cost",
"expression": "basiccost_sum / quantity_sum"
},
{"name":"unit_tax_cost",
"expression": "tax_sum / quantity_sum"
},
{"name":"unit_landed_cost",
"expression": "lc_sum / quantity_sum"
}


                ]
        }
    ]
}

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