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Change plotAveragedDeviceProperty to show last value on miss.

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This commit is contained in:
Alexander Nozik 2024-04-09 15:13:41 +03:00
parent 977500223d
commit 9eb583dfc6
1 changed files with 6 additions and 4 deletions
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10
controls-vision/src/commonMain/kotlin/plotExtensions.kt
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@ -205,14 +205,14 @@ private fun List<Instant>.averageTime(): Instant {
}
/**
* Average property value by [averagingInterval]. Return [missingValue] on each sample interval if no events arrived.
* Average property value by [averagingInterval]. Return [startValue] on each sample interval if no events arrived.
*/
@DFExperimental
public fun Plot.plotAveragedDeviceProperty(
device: Device,
propertyName: String,
missingValue: Double = 0.0,
extractValue: Meta.() -> Double = { value?.double ?: missingValue },
startValue: Double = 0.0,
extractValue: Meta.() -> Double = { value?.double ?: startValue },
maxAge: Duration = defaultMaxAge,
maxPoints: Int = defaultMaxPoints,
minPoints: Int = defaultMinPoints,
@ -221,13 +221,15 @@ public fun Plot.plotAveragedDeviceProperty(
configuration: Scatter.() -> Unit = {},
): Job = scatter(configuration).run {
val data = TimeData()
var lastValue = startValue
device.propertyMessageFlow(propertyName).chunkedByPeriod(averagingInterval).transform { eventList ->
if (eventList.isEmpty()) {
data.append(Clock.System.now(), missingValue.asValue())
data.append(Clock.System.now(), lastValue.asValue())
} else {
val time = eventList.map { it.time }.averageTime()
val value = eventList.map { extractValue(it.value) }.average()
data.append(time, value.asValue())
lastValue = value
}
data.trim(maxAge, maxPoints, minPoints)
emit(data)