From 0e225c6d140a5a4986d0771aefb8a8edbe5d435d Mon Sep 17 00:00:00 2001
From: wukong <wukong@longaeva>
Date: Sat, 13 Apr 2019 13:04:26 -0700
Subject: optimized covariance script; added 'nan' output to diff; added ':'
 output delimiter to lin_reg and quad_reg; fixed broken r^2 calc in quad_reg;

---
 diff.awk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'diff.awk')

diff --git a/diff.awk b/diff.awk
index 721aac6..d39b654 100644
--- a/diff.awk
+++ b/diff.awk
@@ -55,7 +55,7 @@ NF {
             continue
         if ($y ~ number) {
             data[y] = $y
-            (data_prev[y] ~ number) ? diff[y] = data[y] - data_prev[y] : diff[y] = ""
+            (data_prev[y] ~ number) ? diff[y] = data[y] - data_prev[y] : diff[y] = "nan"
             data_prev[y] = data[y]
             printf(OFMT, diff[y])
         }
-- 
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