diff --git a/main.cpp b/main.cpp
index 0cd59dea..f911bf4c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,14 +1,14 @@
 #include "pip.h"
 
-PIKbdListener kbd(0, 0, false);
 
 int main() {
-	//PISystemInfo::machineID();
-	kbd.enableExitCapture();
-	PIThread t;
-	t.start(10);
-	//WAIT_FOR_EXIT;
-	piSleep(20.);
-	t.stop();
+	PIVector<double> v;
+	for (int i=0; i<9; ++i) v << i;
+	PIVector2D<double> v2(3,3,v);
+	piCout << v2;
+	v2.addRow(PIVector<double>() << 99 << 88 << 77 << 66);
+	v2.addRow(v2.row(1));
+	piCout << v2;
 	return 0;
 }
+
diff --git a/src_main/containers/pivector2d.h b/src_main/containers/pivector2d.h
index 604bf9f0..3de31062 100644
--- a/src_main/containers/pivector2d.h
+++ b/src_main/containers/pivector2d.h
@@ -170,7 +170,12 @@ public:
 	inline Col col(size_t index) {return Col(this, index);}
 	inline ColConst col(size_t index) const {return ColConst(this, index);}
 	inline PIVector2D<T> & setRow(size_t row, const Row & other) {
-		size_t sz = piMin<size_t>(cols_, other.p_->cols_);
+		size_t sz = piMin<size_t>(cols_, other.sz_);
+		mat._copyRaw(mat.data(cols_ * row), other.data(), sz);
+		return *this;
+	}
+	inline PIVector2D<T> & setRow(size_t row, const RowConst & other) {
+		size_t sz = piMin<size_t>(cols_, other.sz_);
 		mat._copyRaw(mat.data(cols_ * row), other.data(), sz);
 		return *this;
 	}
@@ -179,6 +184,30 @@ public:
 		mat._copyRaw(mat.data(cols_ * row), other.data(), sz);
 		return *this;
 	}
+	inline PIVector2D<T> & addRow(const Row & other) {
+		size_t sz = piMin<size_t>(cols_, other.sz_);
+		size_t ps = mat.size();
+		mat.resize(mat.size() + cols_);
+		mat._copyRaw(mat.data(ps), other.data(), sz);
+		rows_++;
+		return *this;
+	}
+	inline PIVector2D<T> & addRow(const RowConst & other) {
+		size_t sz = piMin<size_t>(cols_, other.sz_);
+		size_t ps = mat.size();
+		mat.resize(mat.size() + cols_);
+		mat._copyRaw(mat.data(ps), other.data(), sz);
+		rows_++;
+		return *this;
+	}
+	inline PIVector2D<T> & addRow(const PIVector<T> & other) {
+		size_t sz = piMin<size_t>(cols_, other.size());
+		size_t ps = mat.size();
+		mat.resize(mat.size() + cols_);
+		mat._copyRaw(mat.data(ps), other.data(), sz);
+		rows_++;
+		return *this;
+	}
 
 	PIVector<PIVector<T> > toVectors() const {
 		PIVector<PIVector<T> > ret;