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samplestream:class_lagcorrectedquery [2024/04/25 21:59] optrix |
samplestream:class_lagcorrectedquery [2024/04/25 23:20] optrix |
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| ===Usage=== | ===Usage=== | ||
| - | |||
| - | The **multiplier** is usually used to convert the time-base of a //rate//. The class expects your rate to be //per second//, so if you wanted to use a **per minute** input time, you can set the multiplier to 0.016666. | ||
| - | |||
| - | The **shavems** option is useful if you want to simplify the data you're getting by eliminating sub-second results. This will effectively 'round up' your results so you have no more than one point per second. | ||
| You build up your query out of three main parts... | You build up your query out of three main parts... | ||
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| ==Lag Counter or Rate== | ==Lag Counter or Rate== | ||
| - | First, you need a number that can be used to measure the lag. This might be a distance, a flow-rate, a speed or some other **counter** or **rate** that can be used to see how much of a //thing// (other than time) has passed. | + | First, you need a number that can be used to measure the lag. This might be a distance, a flow-rate, a speed or some other **counter** or **rate** that can be used to see how much of a //thing// (other than time) has passed. This is called the [[source|source of lag]]. |
| ==Assets== | ==Assets== | ||
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| Next, you'll choose an [[End Asset|end asset]]. This is usually the //last// part of your system. This is because the class only searches [[building backwards|backwards through time]] rather than forwards, so you'll need to work from the end of your process. | Next, you'll choose an [[End Asset|end asset]]. This is usually the //last// part of your system. This is because the class only searches [[building backwards|backwards through time]] rather than forwards, so you'll need to work from the end of your process. | ||
| + | |||
| + | ===Additional Parameters=== | ||
| + | |||
| + | The **multiplier** is usually used to convert the time-base of a //rate//. The class expects your rate to be //per second//, so if you wanted to use a **per minute** input time, you can set the multiplier to 0.016666. | ||
| + | |||
| + | The **shavems** option is useful if you want to simplify the data you're getting by eliminating sub-second results. This will effectively 'round up' your results so you have no more than one point per second. | ||
| ===Example=== | ===Example=== | ||
| [[example|See an example]] | [[example|See an example]] | ||