diff --git a/qpms/qpms_c.pyx b/qpms/qpms_c.pyx
index 2d6323a..e0fad03 100644
--- a/qpms/qpms_c.pyx
+++ b/qpms/qpms_c.pyx
@@ -1582,6 +1582,7 @@ cdef class ScatteringSystem:
             ar_view[pi] = self.s[0].tm[self.s[0].p[pi].tmatrix_id].spec[0].n
         return ar
 
+
     def fullvec_poffsets(self):
         cdef np.ndarray[intptr_t, ndim=1] ar = np.empty((self.s[0].p_count,), dtype=np.intp)
         cdef intptr_t[::1] ar_view = ar
@@ -1599,6 +1600,25 @@ cdef class ScatteringSystem:
             ar_view[pi,1] = self.s[0].p[pi].pos.y
             ar_view[pi,2] = self.s[0].p[pi].pos.z
         return ar
+   
+    def planewave_full(self, k_cart, E_cart):
+        if k_cart.shape != (3,) or E_cart.shape != (3,):
+            raise ValueError("k_cart and E_cart must be ndarrays of shape (3,)")
+        cdef qpms_incfield_planewave_params_t p
+        p.use_cartesian = 1
+        p.k.cart.x = <cdouble>k_cart[0]
+        p.k.cart.y = <cdouble>k_cart[1]
+        p.k.cart.z = <cdouble>k_cart[2]
+        p.E.cart.x = <cdouble>E_cart[0]
+        p.E.cart.y = <cdouble>E_cart[1]
+        p.E.cart.z = <cdouble>E_cart[2]
+        cdef np.ndarray[np.complex_t, ndim=1] target_np = np.empty(
+                (self.fecv_size,), dtype=complex)
+        cdef cdouble[::1] target_view = target_np
+        qpms_scatsys_incident_field_vector_full(&target_view[0],
+                self.s, qpms_incfield_planewave, <void *>&p, 0)
+        return target_np
+
 
 def tlm2uvswfi(t, l, m):
     ''' TODO doc
diff --git a/qpms/qpms_cdefs.pxd b/qpms/qpms_cdefs.pxd
index 334413f..ddc1d8d 100644
--- a/qpms/qpms_cdefs.pxd
+++ b/qpms/qpms_cdefs.pxd
@@ -9,6 +9,10 @@ cdef extern from "qpms_types.h":
         double x
         double y
         double z
+    cdef struct ccart3_t:
+        cdouble x
+        cdouble y
+        cdouble z
     cdef struct cart2_t:
         double x
         double y
@@ -100,6 +104,19 @@ cdef extern from "qpms_error.h":
     qpms_dbgmsg_flags qpms_dbgmsg_enable(qpms_dbgmsg_flags types)
     qpms_dbgmsg_flags qpms_dbgmsg_disable(qpms_dbgmsg_flags types)
 
+cdef extern from "vswf.h":
+    ctypedef qpms_errno_t (*qpms_incfield_t)(cdouble target, const qpms_vswf_set_spec_t *bspec,
+            const cart3_t evalpoint, const void *args, bint add)
+    ctypedef struct qpms_incfield_planewave_params_t:
+        bint use_cartesian
+        union k:
+            ccart3_t cart
+            csph_t sph
+        union E:
+            ccart3_t cart
+            csph sph
+    qpms_errno_t qpms_incfield_planewave(cdouble target, const qpms_vswf_set_spec_t *bspec,
+            const cart3_t evalpoint, const void *args, bint add)
 
 cdef extern from "indexing.h":
     qpms_uvswfi_t qpms_tmn2uvswfi(qpms_vswf_type_t t, qpms_m_t m, qpms_l_t n)
@@ -342,6 +359,9 @@ cdef extern from "scatsystem.h":
             cdouble *target, const qpms_scatsys_t *ss, qpms_iri_t iri, double k)
     cdouble *qpms_scatsys_build_modeproblem_matrix_irrep_packed_parallelR(
             cdouble *target, const qpms_scatsys_t *ss, qpms_iri_t iri, double k) nogil
+    cdouble *qpms_scatsys_incident_field_vector_full(cdouble *target_full,
+            const qpms_scatsys_t *ss, qpms_incfield_t field_at_point, 
+            const void *args, bint add)
 
 
 
diff --git a/qpms/vswf.h b/qpms/vswf.h
index 9d0e8e1..b4a6f21 100644
--- a/qpms/vswf.h
+++ b/qpms/vswf.h
@@ -77,7 +77,7 @@ csphvec_t qpms_eval_uvswf(const qpms_vswf_set_spec_t *setspec,
 // --- qpms_incfield_t instances and their arguments
 
 /// Parameter structure for qpms_incfield_planewave()
-typedef struct qpms_incfield_planewane_params_t {
+typedef struct qpms_incfield_planewave_params_t {
 	bool use_cartesian; ///< If true, wave direction k and amplitude E are specified in cartesian coordinates (via k.cart, E.cart). If false, k is specified in spherical coordinates and E are specified in the corresponding geographical coordinates (via k.sph, E.sph).
 	union {
 		ccart3_t cart;