1 files changed, 27 insertions, 4 deletions
diff --git a/python/astra/data2d_c.pyx b/python/astra/data2d_c.pyx
index 882051c..42854b3 100644
--- a/python/astra/data2d_c.pyx
+++ b/python/astra/data2d_c.pyx
@@ -47,8 +47,18 @@ from .PyIncludes cimport *
 cimport utils
 from .utils import wrap_from_bytes
 
+from .pythonutils import geom_size
+
+import operator
+
+from six.moves import reduce
+
 cdef CData2DManager * man2d = <CData2DManager * >PyData2DManager.getSingletonPtr()
 
+cdef extern from "CFloat32CustomPython.h":
+    cdef cppclass CFloat32CustomPython:
+        CFloat32CustomPython(arrIn)
+
 def clear():
     man2d.clear()
 
@@ -61,11 +71,16 @@ def delete(ids):
         man2d.remove(ids)
 
 
-def create(datatype, geometry, data=None):
+def create(datatype, geometry, data=None, link=False):
     cdef Config *cfg
     cdef CVolumeGeometry2D * pGeometry
     cdef CProjectionGeometry2D * ppGeometry
     cdef CFloat32Data2D * pDataObject2D
+    cdef CFloat32CustomMemory * pCustom
+
+    if link and data.shape!=geom_size(geometry):
+        raise Exception("The dimensions of the data do not match those specified in the geometry.")
+
     if datatype == '-vol':
         cfg = utils.dictToConfig(six.b('VolumeGeometry'), geometry)
         pGeometry = new CVolumeGeometry2D()
@@ -73,7 +88,11 @@ def create(datatype, geometry, data=None):
             del cfg
             del pGeometry
             raise Exception('Geometry class not initialized.')
-        pDataObject2D = <CFloat32Data2D * > new CFloat32VolumeData2D(pGeometry)
+        if link:
+            pCustom = <CFloat32CustomMemory*> new CFloat32CustomPython(data)
+            pDataObject2D = <CFloat32Data2D * > new CFloat32VolumeData2D(pGeometry, pCustom)
+        else:
+            pDataObject2D = <CFloat32Data2D * > new CFloat32VolumeData2D(pGeometry)
         del cfg
         del pGeometry
     elif datatype == '-sino':
@@ -93,7 +112,11 @@ def create(datatype, geometry, data=None):
             del cfg
             del ppGeometry
             raise Exception('Geometry class not initialized.')
-        pDataObject2D = <CFloat32Data2D * > new CFloat32ProjectionData2D(ppGeometry)
+        if link:
+            pCustom = <CFloat32CustomMemory*> new CFloat32CustomPython(data)
+            pDataObject2D = <CFloat32Data2D * > new CFloat32ProjectionData2D(ppGeometry, pCustom)
+        else:
+            pDataObject2D = <CFloat32Data2D * > new CFloat32ProjectionData2D(ppGeometry)
         del ppGeometry
         del cfg
     else:
@@ -103,7 +126,7 @@ def create(datatype, geometry, data=None):
         del pDataObject2D
         raise Exception("Couldn't initialize data object.")
 
-    fillDataObject(pDataObject2D, data)
+    if not link: fillDataObject(pDataObject2D, data)
 
     return man2d.store(pDataObject2D)