From 1c5545e898b63fbd2a59be4ce244a49dcb1cfe02 Mon Sep 17 00:00:00 2001
From: justme-1968 <justme-1968@users.noreply.github.com>
Date: Mon, 29 Aug 2016 18:38:14 +0000
Subject: [PATCH] 33_readingsGroup.pm: ignore - in calc operations

git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@12088 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 FHEM/33_readingsGroup.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/FHEM/33_readingsGroup.pm b/FHEM/33_readingsGroup.pm
index 360f76237..6d5a7ea68 100644
--- a/FHEM/33_readingsGroup.pm
+++ b/FHEM/33_readingsGroup.pm
@@ -473,7 +473,7 @@ rgCalc($$$$)
     foreach my $col (eval "($cols)") {
       foreach my $row (eval "($rows)") {
         my $value = $hash->{helper}{values}{orig}[$col][$row];
-        if( defined($value) ) {
+        if( defined($value) && $value ne '-' ) {
           #$value =~ s/[^-\.\d]//g;
           push @values, $value;
         }