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//! Observation RINEX masking ops
use crate::{
observation::Record,
observation::SNR,
prelude::{Constellation, Observable},
};
use qc_traits::{FilterItem, MaskFilter, MaskOperand};
use std::str::FromStr;
/// Applies [MaskFilter] to [Record]
pub fn mask_mut(rec: &mut Record, mask: &MaskFilter) {
match mask.operand {
MaskOperand::Equals => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch == *epoch),
FilterItem::ClockItem => rec.retain(|_, obs| obs.clock.is_some()),
FilterItem::ConstellationItem(constells) => {
let mut broad_sbas_filter = false;
for c in constells {
broad_sbas_filter |= *c == Constellation::SBAS;
}
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if broad_sbas_filter {
sig.sv.constellation.is_sbas()
|| constells.contains(&sig.sv.constellation)
} else {
constells.contains(&sig.sv.constellation)
}
});
!obs.signals.is_empty()
});
},
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| items.contains(&sig.sv));
!obs.signals.is_empty()
});
},
FilterItem::SNRItem(filter) => {
let filter = SNR::from(*filter);
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if let Some(snr) = sig.snr {
snr == filter
} else {
false // no SNR: drop out
}
});
!obs.signals.is_empty()
});
},
FilterItem::ComplexItem(filter) => {
// try to interprate as [Observable]
let observables = filter
.iter()
.filter_map(|f| {
if let Ok(ob) = Observable::from_str(f) {
Some(ob)
} else {
None
}
})
.collect::<Vec<_>>();
if !observables.is_empty() {
rec.retain(|_, obs| {
obs.signals
.retain(|sig| observables.contains(&sig.observable));
!obs.signals.is_empty()
});
}
},
_ => {},
}, // MaskOperand::Equals
MaskOperand::NotEquals => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch != *epoch),
FilterItem::ClockItem => rec.retain(|_, obs| obs.clock.is_none()),
FilterItem::ConstellationItem(constells) => {
rec.retain(|_, obs| {
obs.signals
.retain(|sig| !constells.contains(&sig.sv.constellation));
!obs.signals.is_empty()
});
},
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| !items.contains(&sig.sv));
!obs.signals.is_empty()
});
},
FilterItem::ComplexItem(filter) => {
// try to interprate as [Observable]
let observables = filter
.iter()
.filter_map(|f| {
if let Ok(ob) = Observable::from_str(f) {
Some(ob)
} else {
None
}
})
.collect::<Vec<_>>();
if !observables.is_empty() {
rec.retain(|_, obs| {
obs.signals
.retain(|sig| !observables.contains(&sig.observable));
!obs.signals.is_empty()
});
}
},
_ => {},
},
MaskOperand::GreaterEquals => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch >= *epoch),
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
let mut retained = true;
for item in items {
if item.constellation == sig.sv.constellation {
retained &= sig.sv.prn >= item.prn;
}
}
retained
});
!obs.signals.is_empty()
});
},
FilterItem::SNRItem(filter) => {
let filter = SNR::from(*filter);
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if let Some(snr) = sig.snr {
snr >= filter
} else {
false // no SNR: drop out
}
});
!obs.signals.is_empty()
});
},
_ => {},
},
MaskOperand::GreaterThan => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch > *epoch),
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
let mut retained = true;
for item in items {
if item.constellation == sig.sv.constellation {
retained &= sig.sv.prn > item.prn;
}
}
retained
});
!obs.signals.is_empty()
});
},
FilterItem::SNRItem(filter) => {
let filter = SNR::from(*filter);
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if let Some(snr) = sig.snr {
snr > filter
} else {
false // no SNR: drop out
}
});
!obs.signals.is_empty()
});
},
_ => {},
},
MaskOperand::LowerEquals => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch <= *epoch),
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
let mut retained = true;
for item in items {
if item.constellation == sig.sv.constellation {
retained &= sig.sv.prn <= item.prn;
}
}
retained
});
!obs.signals.is_empty()
});
},
FilterItem::SNRItem(filter) => {
let filter = SNR::from(*filter);
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if let Some(snr) = sig.snr {
snr <= filter
} else {
false // no SNR: drop out
}
});
!obs.signals.is_empty()
});
},
_ => {},
},
MaskOperand::LowerThan => match &mask.item {
FilterItem::EpochItem(epoch) => rec.retain(|k, _| k.epoch < *epoch),
FilterItem::SvItem(items) => {
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
let mut retained = true;
for item in items {
if item.constellation == sig.sv.constellation {
retained &= sig.sv.prn < item.prn;
}
}
retained
});
!obs.signals.is_empty()
});
},
FilterItem::SNRItem(filter) => {
let filter = SNR::from(*filter);
rec.retain(|_, obs| {
obs.signals.retain(|sig| {
if let Some(snr) = sig.snr {
snr < filter
} else {
false // no SNR: drop out
}
});
!obs.signals.is_empty()
});
},
_ => {},
},
}
}