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$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()