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This example demonstrate the following comparison functions.

In this example, the dataset contains current measurements of the sides of rectangular areas next to the size of those areas as previously reported. Using these functions, you can perform some light analysis of the data.

Source:

sideAsideBreportedArea
41456
6635
8432
1515200
4728
12670
9981

Transformation:

In the first test, you are determining if the four-sided area is a square, based on a comparison of the measured values for `sideA` and `sideB`:

D trans
RawWrangle true 'isSquare' step derive type:single value:EQUAL(sideA, sideB) as:'isSquare' Formula type Single row formula Formula EQUAL(sideA, sideB) New column name New formula

Next, you can use the reported sides to calculate the area of the shape and compare it to the area previously reported:

D trans
RawWrangle true 'isValidData' step derive type:single value:NOTEQUAL(sideA * sideB, reportedArea) as:'isValidData' Formula type Single row formula Formula NOTEQUAL(sideA * sideB, reportedArea) New column name New formula

You can also compute if the reportedArea can be divided into even square units:

D trans
RawWrangle true 'isReportedAreaEven' step derive type:single value:ISEVEN(reportedArea) as:'isReportedAreaEven' Formula type Single row formula Formula ISEVEN(reportedArea) New column name New formula

You can test if either measured side is an odd number of units:

D trans
RawWrangle true 'isSideOdd' step derive type:single value:IF((ISODD(sideA) == true) OR (ISODD(sideB) == true),TRUE,FALSE) as:'isSideOdd' Formula type Single row formula Formula IF((ISODD(sideA) == true) OR (ISODD(sideB) == true),TRUE,FALSE) New column name New formula

Results:

sideAsideBreportedAreaisSquareisValidDataisReportedAreaEvenisSideOdd
41456FALSEFALSETRUEFALSE
6635TRUETRUETRUEFALSE
8432FALSEFALSETRUEFALSE
1515200TRUETRUETRUETRUE
4728FALSEFALSETRUETRUE
12670FALSETRUETRUEFALSE
9981TRUEFALSEFALSEFALSE