Services or capabilities described in AWS documentation might vary by Region. To see the differences applicable to the AWS European Sovereign Cloud Region, see the AWS European Sovereign Cloud User Guide.$radiansToDegrees
New from version 8.0.1.
The $radiansToDegrees operator in Amazon DocumentDB converts a value from radians to degrees.
Parameters
Example (MongoDB Shell)
The following example shows how to use the $radiansToDegrees operator to convert radian values to degrees.
Create sample documents
db.angles.insertMany([
{ "_id": 1, "radians": 0 },
{ "_id": 2, "radians": 1.5707963267948966 },
{ "_id": 3, "radians": 3.141592653589793 },
{ "_id": 4, "radians": 6.283185307179586 }
]);
Query example
db.angles.aggregate([
{ $project: {
"degrees": { $radiansToDegrees: "$radians" }
}}
]);
Output
[
{ "_id": 1, "degrees": 0 },
{ "_id": 2, "degrees": 90 },
{ "_id": 3, "degrees": 180 },
{ "_id": 4, "degrees": 360 }
]
Code examples
To view a code example for using the $radiansToDegrees operator, choose the tab for the language that you want to use:
- Node.js
-
const { MongoClient } = require('mongodb');
async function main() {
const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
const db = client.db('test');
const collection = db.collection('angles');
const result = await collection.aggregate([
{ $project: {
"degrees": { $radiansToDegrees: "$radians" }
}}
]).toArray();
console.log(result);
await client.close();
}
main();
- Python
-
from pymongo import MongoClient
def main():
client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
db = client['test']
collection = db['angles']
result = list(collection.aggregate([
{ '$project': {
'degrees': { '$radiansToDegrees': '$radians' }
}}
]))
print(result)
client.close()
if __name__ == "__main__":
main()