added calculated NPK values

src/lib/components/ui/Sensors/SEEED_SENSECAP_S2100_NIMBOL/SEEED_SENSECAP_S2100_NIMBOL.svelte

@@ -8,6 +8,7 @@
 	import { getNPKChartConfig } from './chart_npkConfig';
 	import { getPHChartConfig } from './chart_phConfig';
 	import { Radio } from 'svelte-ux';
+	import { estimateNPK } from '../../utilities/SoilToNPK';
 
 	export let sensor = null;
 
@@ -27,6 +28,20 @@
 
 	let ecNotationType = 1;
 
+	const result = estimateNPK({
+		temperature: current_temp,
+		moisture: current_humidity,
+		ec: current_ec,
+		ph: current_ph,
+		actual_n: undefined,
+		actual_p: undefined,
+		actual_k: undefined,
+		n_months_ago: 0,
+		soilType: 'Peaty',
+	});
+	console.log(result);
+	debugger;
+
 	// Function to convert EC based on selected notation type
 	const convertEC = (ecValue: number, notationType: number) => {
 		switch (notationType) {

src/lib/components/ui/utilities/SoilToNPK.ts

@@ -0,0 +1,91 @@
+export type SoilType = "Sandy" | "Loamy" | "Clay" | "Silty" | "Peaty" | "Chalky" | "Saline";
+
+export interface SoilParams {
+  temperature: number; // in Celsius
+  moisture: number;    // as a percentage
+  ec: number;          // in μS/cm
+  ph: number;          // pH level
+  soilType: SoilType;  // Type of soil
+  actual_n?: number;    // Nitrogen (N) value from lab report (optional)
+  actual_p?: number;    // Phosphorus (P) value from lab report (optional)
+  actual_k?: number;    // Potassium (K) value from lab report (optional)
+  n_months_ago?: number; // How many months ago the lab test occurred (optional)
+}
+
+export function estimateNPK({
+  temperature,
+  moisture,
+  ec,
+  ph,
+  soilType,
+  actual_n,
+  actual_p,
+  actual_k,
+  n_months_ago
+}: SoilParams): { N: number; P: number; K: number } {
+  // EC adjustment based on soil type
+  let ecAdjustmentFactor: number;
+  switch (soilType) {
+    case "Sandy":
+      ecAdjustmentFactor = 1.1;
+      break;
+    case "Loamy":
+      ecAdjustmentFactor = 1.0;
+      break;
+    case "Clay":
+      ecAdjustmentFactor = 0.85;
+      break;
+    case "Silty":
+      ecAdjustmentFactor = 0.9;
+      break;
+    case "Peaty":
+      ecAdjustmentFactor = 1.1;
+      break;
+    case "Chalky":
+      ecAdjustmentFactor = 0.9;
+      break;
+    case "Saline":
+      ecAdjustmentFactor = 0.6;
+      break;
+    default:
+      ecAdjustmentFactor = 1.0; // Default to no adjustment if not specified
+  }
+
+  // Adjust EC
+  const adjustedEC = ec * ecAdjustmentFactor;
+
+  // Stronger bias factor calculation (non-linear, stronger towards lab data)
+  const alpha = n_months_ago ? Math.max(0.1, Math.exp(-0.3 * n_months_ago)) : 0.5;
+
+  // Formula-based estimates (from EC, moisture, pH)
+  const estimatedN = 0.1 * adjustedEC + 0.5 * moisture + 10 * (ph - 6);
+  const estimatedP = 0.05 * adjustedEC + 0.2 * moisture + 15 * (ph - 6);
+  const estimatedK = 0.2 * adjustedEC + 0.3 * moisture + 5 * (ph - 6);
+
+  // If lab data is provided, bias the calculation towards those values
+  const N = actual_n !== undefined ? alpha * estimatedN + (1 - alpha) * actual_n : estimatedN;
+  const P = actual_p !== undefined ? alpha * estimatedP + (1 - alpha) * actual_p : estimatedP;
+  const K = actual_k !== undefined ? alpha * estimatedK + (1 - alpha) * actual_k : estimatedK;
+
+  // Return the estimated NPK values
+  return {
+    N: parseFloat(N.toFixed(2)),
+    P: parseFloat(P.toFixed(2)),
+    K: parseFloat(K.toFixed(2))
+  };
+}
+
+// // Example usage:
+// const result = estimateNPK({
+//   temperature: 22.9,
+//   moisture: 37.5,
+//   ec: 1137,
+//   ph: 6.19,
+//   soilType: "Clay",
+//   actual_n: 120,
+//   actual_p: 60,
+//   actual_k: 200,
+//   n_months_ago: 2
+// });
+
+// console.log(result); // Example output with stronger bias