cmTokm (Function)

This converts the input value given in centimeters into kilometers.

Syntax

<DOUBLE> unitconversion:cmTokm(<INT|LONG|FLOAT|DOUBLE> p1)

Query Parameters

Name	Description	Default Value	Possible Data Types	Optional	Dynamic
p1	The value that needs to be converted from centimeters into kilometers.		INT LONG FLOAT DOUBLE	No	Yes

Example 1

unitconversion:cmTokm(100)

In this example, the unitconversion:cmTokm() function converts a value of 100 centimeters into its equivalent value in kilometers. The conversion result is 0.001 kilometers.

Example 2

CREATE STREAM InputStream (length_cm double);
CREATE SINK STREAM OutputStream (length_cm double, length_km double);

@info(name = 'lengthConversionQuery')
INSERT INTO OutputStream
SELECT length_cm, unitconversion:cmTokm(length_cm) AS length_km
FROM InputStream;

In this example, we create an input stream called InputStream with a single attribute, length_cm, representing lengths in centimeters. We then define an output stream called OutputStream, which will contain the original length in centimeters as well as the converted length in kilometers.

The lengthConversionQuery processes events from the InputStream. It uses the unitconversion:cmTokm() function to convert the length_cm attribute from the InputStream into its corresponding value in kilometers, and this value is assigned to the length_km attribute in the OutputStream.

The query outputs the original length in centimeters and the converted length in kilometers for each event to the OutputStream.