From 05b4b47a9798bbe08bf6c0a219a5f270a0bcb67d Mon Sep 17 00:00:00 2001
From: Joakim Skogholt <onlinereg@skogholt.xyz>
Date: Sat, 15 Jun 2024 16:15:17 +0200
Subject: [PATCH] Added SNV

---
 src/Ting.jl                       |  1 +
 src/variousRegressionFunctions.jl | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/Ting.jl b/src/Ting.jl
index 4b98f8e..b173dda 100644
--- a/src/Ting.jl
+++ b/src/Ting.jl
@@ -30,6 +30,7 @@ export TRLooCVUpdateNaive
 export TRLooCVUpdateExperimental
 
 # From "variousRegressionFunctions.jl"
+export SNV
 export EMSC
 export EMSCCorrection
 export cVals
diff --git a/src/variousRegressionFunctions.jl b/src/variousRegressionFunctions.jl
index 8307bd3..f6fda96 100644
--- a/src/variousRegressionFunctions.jl
+++ b/src/variousRegressionFunctions.jl
@@ -1,9 +1,19 @@
+function SNV(X)
+
+X_SNV = zeros(size(X));
+means = mean(X, dims=2);
+stds  = std(X, dims=2);
+X_SNV = @. (X - means) / stds;
+
+return X_SNV;
+end
+
 function EMSCCorrection(X, basis)
     
-    coeffs   = basis \ X';
-    X_Cor   = (X - coeffs[2:end,:]' * basis[:,2:end]') ./ coeffs[1,:];
+coeffs   = basis \ X';
+X_Cor   = (X - coeffs[2:end,:]' * basis[:,2:end]') ./ coeffs[1,:];
     
-    return X_Cor
+return X_Cor
 end
 
 function EMSC(X, polDeg=2)