c++ - Block operations won't work on Eigen -

the block operations on eigen won't work. i'm getting bunch of errors like:

error: ‘eigen::vector4d’ has no member named ‘head’ 

the line of code generating error is:

outvector.push_back(out.head<3>()); 

where out eigen::vector4d , outvector std::vector<eigen::vector4d>.

the full error output is:

portalspace2.cpp: in member function ‘virtual std::vector<eigen::matrix<double, 3, 1> > portalspace::pointofreference::vectorsfrompoint(std::tr1::shared_ptr<manifold::point>)’: portalspace2.cpp:73:26: error: ‘eigen::vector4d’ has no member named ‘head’ portalspace2.cpp:73:34: error: expected primary-expression before ‘)’ token portalspace2.cpp: in member function ‘virtual std::tr1::shared_ptr<manifold::point> portalspace::pointofreference::pointfromvector(eigen::vector3d)’: portalspace2.cpp:84:24: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:85:24: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:96:28: error: ‘class portalspace::point’ has no member named ‘tail’ portalspace2.cpp:96:49: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:97:13: error: expected initializer before ‘<<’ token portalspace2.cpp:98:32: error: ‘y’ not declared in scope portalspace2.cpp: in member function ‘virtual void portalspace::pointofreference::move(eigen::vector3d)’: portalspace2.cpp:116:13: error: ‘vector’ not declared in scope portalspace2.cpp:116:13: note: suggested alternative: in file included /usr/include/c++/4.7/vector:65:0,                  portalspace2.h:4,                  portalspace2.cpp:5: /usr/include/c++/4.7/bits/stl_vector.h:208:11: note:   ‘std::vector’ portalspace2.cpp:119:28: error: no match ‘operator[]’ in ‘((portalspace::pointofreference*)this)->portalspace::pointofreference::position[0]’ portalspace2.cpp:120:28: error: no match ‘operator[]’ in ‘((portalspace::pointofreference*)this)->portalspace::pointofreference::position[0]’ portalspace2.cpp:121:24: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:122:24: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:133:28: error: ‘class portalspace::point’ has no member named ‘tail’ portalspace2.cpp:133:49: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:134:13: error: expected initializer before ‘<<’ token portalspace2.cpp:135:2: error: ‘coordinates’ not declared in scope portalspace2.cpp:135:19: error: ‘y’ not declared in scope portalspace2.cpp:140:12: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:141:12: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:141:26: error: ‘eigen::vector4d’ has no member named ‘tail’ portalspace2.cpp:142:12: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:142:43: error: no match ‘operator[]’ in ‘((portalspace::pointofreference*)this)->portalspace::pointofreference::position[1]’ portalspace2.cpp:142:55: error: no match ‘operator[]’ in ‘((portalspace::pointofreference*)this)->portalspace::pointofreference::position[2]’ portalspace2.cpp:142:67: error: no match ‘operator[]’ in ‘((portalspace::pointofreference*)this)->portalspace::pointofreference::position[3]’ portalspace2.cpp:143:12: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:143:34: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:143:60: error: ‘eigen::matrix4d’ has no member named ‘column’ portalspace2.cpp:149:23: error: expected primary-expression before ‘.’ token portalspace2.cpp:150:31: error: expected primary-expression before ‘<<’ token portalspace2.cpp:156:14: error: expected primary-expression before ‘.’ token portalspace2.cpp:157:31: error: expected primary-expression before ‘<<’ token portalspace2.cpp:162:14: error: expected primary-expression before ‘.’ token portalspace2.cpp:163:31: error: expected primary-expression before ‘<<’ token in file included /usr/include/eigen2/eigen/core:137:0,                  /usr/include/eigen2/eigen/dense:1,                  manifold.h:7,                  portalspace2.h:7,                  portalspace2.cpp:5: /usr/include/eigen2/eigen/src/core/product.h: in instantiation of ‘const typename eigen::productreturntype<derived, otherderived>::type eigen::matrixbase<derived>::operator*(const eigen::matrixbase<otherderived>&) const [with otherderived = eigen::matrix<double, 4, 4>; derived = eigen::matrix<double, 3, 3>; typename eigen::productreturntype<derived, otherderived>::type = eigen::product<const eigen::matrix<double, 3, 3>&, const eigen::matrix<double, 4, 4>&, 0>]’: portalspace2.cpp:170:20:   required here /usr/include/eigen2/eigen/src/core/product.h:297:3: error: ‘invalid_matrix_product’ not member of ‘eigen::ei_static_assert<false>’ in file included /usr/include/eigen2/eigen/core:125:0,                  /usr/include/eigen2/eigen/dense:1,                  manifold.h:7,                  portalspace2.h:7,                  portalspace2.cpp:5: /usr/include/eigen2/eigen/src/core/assign.h: in instantiation of ‘derived& eigen::matrixbase<derived>::lazyassign(const eigen::matrixbase<otherderived>&) [with otherderived = eigen::matrix<double, 3, 4, 2, 3, 4>; derived = eigen::matrix<double, 4, 4>]’: /usr/include/eigen2/eigen/src/core/assign.h:447:123:   required ‘static derived& eigen::ei_assign_selector<derived, otherderived, false, false>::run(derived&, const otherderived&) [with derived = eigen::matrix<double, 4, 4>; otherderived = eigen::matrix<double, 3, 4, 2, 3, 4>]’ /usr/include/eigen2/eigen/src/core/matrix.h:554:87:   required ‘eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>& eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>::_set_noalias(const eigen::matrixbase<otherderived>&) [with otherderived = eigen::matrix<double, 3, 4, 2, 3, 4>; _scalar = double; int _rows = 4; int _cols = 4; int _options = 2; int _maxrows = 4; int _maxcols = 4; eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols> = eigen::matrix<double, 4, 4>]’ /usr/include/eigen2/eigen/src/core/matrix.h:538:94:   required ‘void eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>::_set_selector(const otherderived&, const eigen::ei_meta_true&) [with otherderived = eigen::product<const eigen::matrix<double, 3, 3>&, const eigen::matrix<double, 4, 4>&, 0>; _scalar = double; int _rows = 4; int _cols = 4; int _options = 2; int _maxrows = 4; int _maxcols = 4]’ /usr/include/eigen2/eigen/src/core/matrix.h:533:7:   required ‘eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>& eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>::_set(const eigen::matrixbase<otherderived>&) [with otherderived = eigen::product<const eigen::matrix<double, 3, 3>&, const eigen::matrix<double, 4, 4>&, 0>; _scalar = double; int _rows = 4; int _cols = 4; int _options = 2; int _maxrows = 4; int _maxcols = 4; eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols> = eigen::matrix<double, 4, 4>]’ /usr/include/eigen2/eigen/src/core/matrix.h:283:24:   required ‘eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>& eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols>::operator=(const eigen::matrixbase<otherderived>&) [with otherderived = eigen::product<const eigen::matrix<double, 3, 3>&, const eigen::matrix<double, 4, 4>&, 0>; _scalar = double; int _rows = 4; int _cols = 4; int _options = 2; int _maxrows = 4; int _maxcols = 4; eigen::matrix<_scalar, _rows, _cols, _options, _maxrows, _maxcols> = eigen::matrix<double, 4, 4>]’ portalspace2.cpp:170:20:   required here /usr/include/eigen2/eigen/src/core/assign.h:428:3: error: ‘you_mixed_matrices_of_different_sizes’ not member of ‘eigen::ei_static_assert<false>’ make: *** [all] error 1 

there's several unrelated compiler errors in there, i'll work on when there.

it seems using eigen2 while code expecting eigen3 since function head() not exist in eigen2 (it called start()).