Add interp and repmat function.

src/Function2D.cpp

@@ -1 +1,45 @@
 #include "Function2D.h"
+#include "Function1D.h"
+#include "Function.h"
+
+using namespace Aurora;
+
+Matrix Aurora::interp2(const Matrix& aX, const Matrix& aY, const Matrix& aV, const Matrix& aX1, const Matrix& aY1, InterpnMethod aMethod)
+{
+    if (aV.getDims() != 2)
+    {
+        return Matrix();
+    }
+
+    if (aX1.getDimSize(0) != aY1.getDimSize(0))
+    {
+        return Matrix();
+    }
+
+    int columnNum = aV.getDimSize(1);
+    int rowNum = aV.getDimSize(0);
+
+    if(aX.getDimSize(0) != columnNum || aY.getDimSize(0) != rowNum)
+    {
+      return Matrix();
+    }
+
+    int nx1 = aX1.getDimSize(0);
+    std::shared_ptr<double> resultData = std::shared_ptr<double>(Aurora::malloc(nx1), Aurora::free);
+    for (int i = 0; i < nx1; ++i)
+    {
+        std::shared_ptr<double> xResultData = std::shared_ptr<double>(Aurora::malloc(columnNum), Aurora::free);
+        for(int j =0; j < columnNum; ++j)
+        {
+            xResultData.get()[j] = interp1(aY,aV($,j).toMatrix(),aY1(i).toMatrix(),aMethod).getData()[0];
+        }
+        Matrix xResult(xResultData,std::vector<int>{columnNum});
+        resultData.get()[i] = interp1(aX,xResult,aX1(i).toMatrix(),aMethod).getData()[0];
+    }
+    return Matrix(resultData,std::vector<int>{nx1});
+}
+
+Matrix Aurora::interpn(const Matrix& aX, const Matrix& aY, const Matrix& aV, const Matrix& aX1, const Matrix& aY1, InterpnMethod aMethod)
+{
+    return Aurora::interp2(aY,aX,aV,aY1,aX1,aMethod);
+}