Longitude (longitude)

[ 1 Description ] [ 2 How does it work in the search window? ] [ 3 How does it work in LINQ? ]

Description

Returns the longitude value corresponding to a given geocoord.

How does it work in the search window?

This operation needs only one argument:

Argument	Data type

Argument	Data type
Geocoord ^mandatory	geocoord

The data type of the new column is float.

Example

We want to get the longitude values corresponding to the geocoord strings in the geohash_strings column. First, we must convert the strings into geocoord data type, then use the Longitude operation to get the corresponding longitude values.

Step 1: Transform the geocoord strings into data type geocoord

First, use the Geocoord (geocoord) operation to transform the strings in the geohash_strings column into data type geocoord. Let's call the new column geocoords

Step 2: Get the latitude of the geocoords

Now, create a new column using the Longitude operation and adding the geocoords column as the argument. Call the new column longitude.

Click Create column and you will see the following result:

How does it work in LINQ?

Use the operator select... as... and add the operation syntax to create the new column. This is the syntax of the Longitude operation:

longitude(geocoord)

Example

Note that you must have uploaded the following CSV file to your Devo domain as explained above to try out this example.

Copy the following LINQ script and try the above example on the my.upload.geolocation.data table.

from my.upload.geolocation.data
select split(message, ";", 1) as geohash_strings
select geocoord(geohash_strings) as geocoords,
longitude(geocoords) as longitude