TEST: Re-generate splinterpolator benchmark data

test/test_splinterpolator.cc

@@ -105,6 +105,41 @@ public:
     return values;
   }
 
+  // void save_nifti(std::vector<std::vector<float>> values, std::string filename)
+  // {
+
+  //   arma::mat sform = arma::eye(4, 4);
+  //   sform(0, 0) /= 3;
+  //   sform(1, 1) /= 3;
+  //   sform(2, 2) /= 3;
+  //   sform(0, 3)  = -8;
+  //   sform(1, 3)  = -8;
+  //   sform(2, 3)  = -8;
+
+  //   int tsz = values.size();
+  //   NEWIMAGE::volume<float> vol(xsz, ysz, zsz, tsz);
+  //   vol.set_sform(2, sform);
+
+  //   for (int t = 0; t < tsz; t++) {
+  //     int i = 0;
+  //     for (int z = 0; z < zsz; z++) {
+  //     for (int y = 0; y < ysz; y++) {
+  //     for (int x = 0; x < xsz; x++) {
+  //       vol(x, y, z, t) = values[t][i];
+  //       i++;
+  //     }}}
+  //   }
+  //   NEWIMAGE::write_volume(vol, filename);
+  // }
+
+
+  // void save_nifti(std::vector<float> values, std::string filename)
+  // {
+  //   std::vector<std::vector<float>> tvals{values};
+  //   save_nifti(tvals, filename);
+  // }
+
+
   // compare two float vectors
   void compare(std::vector<float> a, std::vector<float> b, float tol=1e-5) {
     BOOST_CHECK_EQUAL(a.size(), b.size());