From 9147eeffc8935a22d754944611cabd82bb90c295 Mon Sep 17 00:00:00 2001
From: sigpro <x.wangyan@gmail.com>
Date: Tue, 20 Nov 2012 21:15:43 +0800
Subject: [PATCH] change 2 files

---
 ex7/projectData.m | 2 ++
 ex7/recoverData.m | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/ex7/projectData.m b/ex7/projectData.m
index d31509d..5da3e97 100644
--- a/ex7/projectData.m
+++ b/ex7/projectData.m
@@ -18,6 +18,8 @@
 %                    projection_k = x' * U(:, k);
 %
 
+  
+    Z = X * U(:, 1:K);
 
 
 
diff --git a/ex7/recoverData.m b/ex7/recoverData.m
index da277f5..452129e 100644
--- a/ex7/recoverData.m
+++ b/ex7/recoverData.m
@@ -21,7 +21,7 @@
 %               Notice that U(j, 1:K) is a row vector.
 %               
 
-
+X_rec =  Z * U(:, 1:K)'  ;
 
 % =============================================================