Swift Heart Rate Variability result conversion from ms to double
up vote
3
down vote
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So I'm trying to make an app where the user's heart rate variability is fetched and displayed to them. The issue is that Im not really sure how to convert the result I get from my query to a double, I have tried using
let quantity: HKQuantity? = result?.averageQuantity()
beats = quantity?.doubleValue(for: HKUnit.count().unitDivided(by: HKUnit.minute()))
print(beats)
but I would get the error "reason: 'Attempt to convert incompatible units: ms, count/min'" which is expected because the beats line is intended for average heart rate not heart rate variability. If i print out the quantity variable I do get the result back in this format "Optional(65.24 ms)".
My question is how do I properly convert the result from the first line from ms to a double? Or how can i display it on a label? Because in the ms form it won't work.
Thank for the help in advance guys
ios swift health-kit
asked Nov 11 at 7:02
Aligator
424
add a comment |
up vote
3
down vote
favorite
So I'm trying to make an app where the user's heart rate variability is fetched and displayed to them. The issue is that Im not really sure how to convert the result I get from my query to a double, I have tried using
let quantity: HKQuantity? = result?.averageQuantity()
beats = quantity?.doubleValue(for: HKUnit.count().unitDivided(by: HKUnit.minute()))
print(beats)
but I would get the error "reason: 'Attempt to convert incompatible units: ms, count/min'" which is expected because the beats line is intended for average heart rate not heart rate variability. If i print out the quantity variable I do get the result back in this format "Optional(65.24 ms)".
My question is how do I properly convert the result from the first line from ms to a double? Or how can i display it on a label? Because in the ms form it won't work.
Thank for the help in advance guys
ios swift health-kit
asked Nov 11 at 7:02
Aligator
424
add a comment |
up vote
3
down vote
favorite
up vote
3
down vote
favorite
So I'm trying to make an app where the user's heart rate variability is fetched and displayed to them. The issue is that Im not really sure how to convert the result I get from my query to a double, I have tried using
let quantity: HKQuantity? = result?.averageQuantity()
beats = quantity?.doubleValue(for: HKUnit.count().unitDivided(by: HKUnit.minute()))
print(beats)
but I would get the error "reason: 'Attempt to convert incompatible units: ms, count/min'" which is expected because the beats line is intended for average heart rate not heart rate variability. If i print out the quantity variable I do get the result back in this format "Optional(65.24 ms)".
My question is how do I properly convert the result from the first line from ms to a double? Or how can i display it on a label? Because in the ms form it won't work.
Thank for the help in advance guys
ios swift health-kit
asked Nov 11 at 7:02
Aligator
424
So I'm trying to make an app where the user's heart rate variability is fetched and displayed to them. The issue is that Im not really sure how to convert the result I get from my query to a double, I have tried using
let quantity: HKQuantity? = result?.averageQuantity()
beats = quantity?.doubleValue(for: HKUnit.count().unitDivided(by: HKUnit.minute()))
print(beats)
but I would get the error "reason: 'Attempt to convert incompatible units: ms, count/min'" which is expected because the beats line is intended for average heart rate not heart rate variability. If i print out the quantity variable I do get the result back in this format "Optional(65.24 ms)".
My question is how do I properly convert the result from the first line from ms to a double? Or how can i display it on a label? Because in the ms form it won't work.
Thank for the help in advance guys
ios swift health-kit
ios swift health-kit
asked Nov 11 at 7:02
Aligator
424
asked Nov 11 at 7:02
Aligator
424
asked Nov 11 at 7:02
Aligator
424
asked Nov 11 at 7:02
Aligator
424
asked Nov 11 at 7:02
Aligator
424
424
add a comment |
add a comment |
1 Answer
1
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votes
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1
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accepted
Found a solution. This is how to convert the heart rate variability result from MS to a double value. You can then change it to a string
beats = quantity?.doubleValue(for: HKUnit.secondUnit(with: .milli))
answered Nov 11 at 7:18
Aligator
424
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
Found a solution. This is how to convert the heart rate variability result from MS to a double value. You can then change it to a string
beats = quantity?.doubleValue(for: HKUnit.secondUnit(with: .milli))
answered Nov 11 at 7:18
Aligator
424
add a comment |
up vote
1
down vote
accepted
Found a solution. This is how to convert the heart rate variability result from MS to a double value. You can then change it to a string
beats = quantity?.doubleValue(for: HKUnit.secondUnit(with: .milli))
answered Nov 11 at 7:18
Aligator
424
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
Found a solution. This is how to convert the heart rate variability result from MS to a double value. You can then change it to a string
beats = quantity?.doubleValue(for: HKUnit.secondUnit(with: .milli))
answered Nov 11 at 7:18
Aligator
424
Found a solution. This is how to convert the heart rate variability result from MS to a double value. You can then change it to a string
beats = quantity?.doubleValue(for: HKUnit.secondUnit(with: .milli))
answered Nov 11 at 7:18
Aligator
424
answered Nov 11 at 7:18
Aligator
424
answered Nov 11 at 7:18
Aligator
424
answered Nov 11 at 7:18
Aligator
424
424
add a comment |
add a comment |
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