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Remove aCOBpredBGs (accelerated carbohydrate absorption) as it is not used anymore. #1319

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Nov 15, 2019
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Remove aCOBpredBGs (accelerated carbohydrate absorption) as it is not used anymore. #1319

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17 changes: 1 addition & 16 deletions lib/determine-basal/determine-basal.js
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Original file line number Diff line number Diff line change
Expand Up @@ -414,12 +414,10 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
// generate predicted future BGs based on IOB, COB, and current absorption rate

var COBpredBGs = [];
var aCOBpredBGs = [];
var IOBpredBGs = [];
var UAMpredBGs = [];
var ZTpredBGs = [];
COBpredBGs.push(bg);
aCOBpredBGs.push(bg);
IOBpredBGs.push(bg);
ZTpredBGs.push(bg);
UAMpredBGs.push(bg);
Expand Down Expand Up @@ -527,10 +525,9 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
} else {
cid = Math.min(remainingCATime*60/5/2,Math.max(0, meal_data.mealCOB * csf / ci ));
}
var acid = Math.max(0, meal_data.mealCOB * csf / aci );
// duration (hours) = duration (5m) * 5 / 60 * 2 (to account for linear decay)
console.error("Carb Impact:",ci,"mg/dL per 5m; CI Duration:",round(cid*5/60*2,1),"hours; remaining CI (~2h peak):",round(remainingCIpeak,1),"mg/dL per 5m");
//console.error("Accel. Carb Impact:",aci,"mg/dL per 5m; ACI Duration:",round(acid*5/60*2,1),"hours");
//console.error("Accel. Carb Impact:",aci,"mg/dL per 5m; ACI Duration:",round(aci*5/60*2,1),"hours");
var minIOBPredBG = 999;
var minCOBPredBG = 999;
var minUAMPredBG = 999;
Expand Down Expand Up @@ -569,7 +566,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
// for COBpredBGs, predicted carb impact drops linearly from current carb impact down to zero
// eventually accounting for all carbs (if they can be absorbed over DIA)
var predCI = Math.max(0, Math.max(0,ci) * ( 1 - COBpredBGs.length/Math.max(cid*2,1) ) );
var predACI = Math.max(0, Math.max(0,aci) * ( 1 - COBpredBGs.length/Math.max(acid*2,1) ) );
// if any carbs aren't absorbed after remainingCATime hours, assume they'll absorb in a /\ shaped
// bilinear curve peaking at remainingCIpeak at remainingCATime/2 hours (remainingCATime/2*12 * 5m)
// and ending at remainingCATime h (remainingCATime*12 * 5m intervals)
Expand All @@ -580,7 +576,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
predCIs.push(round(predCI,0));
//process.stderr.write(round(predCI,1)+"+"+round(remainingCI,1)+" ");
COBpredBG = COBpredBGs[COBpredBGs.length-1] + predBGI + Math.min(0,predDev) + predCI + remainingCI;
var aCOBpredBG = aCOBpredBGs[aCOBpredBGs.length-1] + predBGI + Math.min(0,predDev) + predACI;
// for UAMpredBGs, predicted carb impact drops at slopeFromDeviations
// calculate predicted CI from UAM based on slopeFromDeviations
var predUCIslope = Math.max(0, uci + ( UAMpredBGs.length*slopeFromDeviations ) );
Expand All @@ -599,7 +594,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
// truncate all BG predictions at 4 hours
if ( IOBpredBGs.length < 48) { IOBpredBGs.push(IOBpredBG); }
if ( COBpredBGs.length < 48) { COBpredBGs.push(COBpredBG); }
if ( aCOBpredBGs.length < 48) { aCOBpredBGs.push(aCOBpredBG); }
if ( UAMpredBGs.length < 48) { UAMpredBGs.push(UAMpredBG); }
if ( ZTpredBGs.length < 48) { ZTpredBGs.push(ZTpredBG); }
// calculate minGuardBGs without a wait from COB, UAM, IOB predBGs
Expand Down Expand Up @@ -654,15 +648,6 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
}
rT.predBGs.ZT = ZTpredBGs;
lastZTpredBG=round(ZTpredBGs[ZTpredBGs.length-1]);
if (meal_data.mealCOB > 0) {
aCOBpredBGs.forEach(function(p, i, theArray) {
theArray[i] = round(Math.min(401,Math.max(39,p)));
});
for (i=aCOBpredBGs.length-1; i > 12; i--) {
if (aCOBpredBGs[i-1] !== aCOBpredBGs[i]) { break; }
else { aCOBpredBGs.pop(); }
}
}
if (meal_data.mealCOB > 0 && ( ci > 0 || remainingCIpeak > 0 )) {
COBpredBGs.forEach(function(p, i, theArray) {
theArray[i] = round(Math.min(401,Math.max(39,p)));
Expand Down