diff --git a/src/mappings/swig/ruby/example/ruby_example.i b/src/mappings/swig/ruby/example/ruby_example.i
index e0392af..f16adf6 100644
--- a/src/mappings/swig/ruby/example/ruby_example.i
+++ b/src/mappings/swig/ruby/example/ruby_example.i
@@ -1,12 +1,12 @@
 %module example
 
 %include ../../typemaps/ruby/biolib_matrix.i
+
+MAP_INOUT_DIM_MATRIXASARRAY(double,arg1,arg2,matrix_as_array)
+
 %include ../../typemaps/ruby/biolib_array.i
 
-BIOLIB_INARRAY(double, data)
-BIOLIB_INOUTARRAY(double,num,data,result)
-BIOLIB_OUTARRAY(double,result)
-BIOLIB_INMATRIXASARRAY(double,arg1,arg2,matrix_as_array)
+MAP_INOUT_ARRAY(double,data,result) 
 
 %include ../../example.i
 
diff --git a/src/mappings/swig/ruby/rqtl/ruby_rqtl.i b/src/mappings/swig/ruby/rqtl/ruby_rqtl.i
index dc7c5ca..eac8705 100644
--- a/src/mappings/swig/ruby/rqtl/ruby_rqtl.i
+++ b/src/mappings/swig/ruby/rqtl/ruby_rqtl.i
@@ -22,9 +22,8 @@ BIOLIB_INMATRIXASARRAY(double,arg8,arg1,Intcov)
 
 %include ../../typemaps/ruby/biolib_array.i
 
-/* BIOLIB_INARRAY(double,weights) 
+BIOLIB_INARRAY(double,weights)
 BIOLIB_INARRAY(double,pheno) 
-*/
 
 /* BIOLIB_INOUTARRAY(double,n_ind,pheno,result) 
  */
diff --git a/src/mappings/swig/ruby/test/test_example.rb b/src/mappings/swig/ruby/test/test_example.rb
index 4879e62..223ca0d 100644
--- a/src/mappings/swig/ruby/test/test_example.rb
+++ b/src/mappings/swig/ruby/test/test_example.rb
@@ -7,6 +7,7 @@
 
 values = [1.1,1.2,2.1,2.2,3.1,3.2]
 result = Biolib::Example.matrix_as_array_change(2,3,values)
+p values
 raise "Test failed with value #{result}" if result[3] != 4
 
 result = Biolib::Example.array_transform_to_result([1,2,3,4])
diff --git a/src/mappings/swig/typemaps/ruby/biolib_array.i b/src/mappings/swig/typemaps/ruby/biolib_array.i
index 4128df4..40531d8 100644
--- a/src/mappings/swig/typemaps/ruby/biolib_array.i
+++ b/src/mappings/swig/typemaps/ruby/biolib_array.i
@@ -1,10 +1,29 @@
-%define BIOLIB_INARRAY(type,name)
+%define MAP_IN_DIM_ARRAY(type,sizearg,name)
   %typemap(in) type* name {
-    /* %typemap(in) type* name */
+    /* MAP_IN_DIM_ARRAY %typemap(in) type* name */
     int i, len;
     
     if (!rb_obj_is_kind_of($input,rb_cArray))
-      rb_raise(rb_eArgError, "BIOLIB_INARRAY expected Array of values for $1_name");
+      rb_raise(rb_eArgError, "MAP_IN_ARRAY expected Array of values for $1_name");
+    len = sizearg;
+    $1 = (type *)malloc(len*sizeof(type));
+    for (i=0; i<len; ++i)
+      ($1)[i] = rb_len2dbl(RARRAY($input)->ptr[i]);
+  }
+
+  %typemap(freearg) type *name {
+    /* MAP_IN_DIM_ARRAY %typemap(freearg) type *name */
+    if ($1) free($1);
+  }   
+%enddef
+
+%define MAP_IN_ARRAY(type,name)
+  %typemap(in) type* name {
+    /* MAP_IN_ARRAY %typemap(in) type* name */
+    int i, len;
+    
+    if (!rb_obj_is_kind_of($input,rb_cArray))
+      rb_raise(rb_eArgError, "MAP_IN_ARRAY expected Array of values for $1_name");
     len = RARRAY($input)->len;
     $1 = (type *)malloc(len*sizeof(type));
     for (i=0; i<len; ++i)
@@ -12,7 +31,7 @@
   }
 
   %typemap(freearg) type *name {
-    /* %typemap(freearg) type *name */
+    /* MAP_IN_ARRAY %typemap(freearg) type *name */
     if ($1) free($1);
   }   
 %enddef
@@ -29,49 +48,75 @@
  * used as a function wide parameter.
  */
 
-%define BIOLIB_INOUTARRAY(type,len,data,result)
-  /* FIX This will break the example
-
-  %typemap(in, leninputs=0) int len {
-  */
-    /* %typemap(in, leninputs=0) int len: ignore len input */
-    /*
-  }
-  */
+%define MAP_INOUT_DIM_ARRAY(type,sizearg,data,result)
 
   %typemap(in) (type* data, type *result) {
-    /* %typemap(in) (type* data, type *result) */
+    /* MAP_INOUT_DIM_ARRAY %typemap(in) (type* data, type *result) */
     int i, asize;
     
     if (!rb_obj_is_kind_of($input,rb_cArray))
-      rb_raise(rb_eArgError, "BIOLIB_INOUTARRAY expected Array of values for $1_name");
-    asize = RARRAY($input)->len;
+      rb_raise(rb_eArgError, "MAP_INOUT_DIM_ARRAY expected Array of values for $1_name");
+    asize = sizearg;
     $1 = (type *)malloc(asize*sizeof(type));
     for (i=0; i<asize; ++i)
-      ($1)[i] = rb_len2dbl(RARRAY($input)->ptr[i]);
+      ($1)[i] = rb_num2dbl(RARRAY($input)->ptr[i]);
     $2 = (type *)malloc(asize*sizeof(type));
   }
 
   %typemap(freearg) (type* data, type *result) {
-    /* %typemap(in) (type* data, type *result) */
+    /* MAP_INOUT_DIM_ARRAY %typemap(in) (type* data, type *result) */
     if ($1) free($1);
     if ($2) free($2);
   }
 %enddef
 
-%define BIOLIB_OUTARRAY(type,sizearg,result)
+%define MAP_INOUT_ARRAY(type,data,result)
+
+  %typemap(in) (int num, type* data, type *result) {
+    /* MAP_INOUT_ARRAY %typemap(in) (int, type* data, type *result) */
+    int i, asize;
+    
+    if (!rb_obj_is_kind_of($input,rb_cArray))
+      rb_raise(rb_eArgError, "MAP_INOUT_ARRAY expected Array of values for $2_name");
+    asize = RARRAY($input)->len;
+    $1 = asize;
+    $2 = (type *)malloc(asize*sizeof(type));
+    for (i=0; i<asize; ++i)
+      ($2)[i] = rb_num2dbl(RARRAY($input)->ptr[i]);
+    $3 = (type *)malloc(asize*sizeof(type));
+  }
+
+  %typemap(argout) (int num, type *data, type *result) {
+    /* MAP_OUT_ARRAY %typemap(argout) int type, *data type, *result */
+    int i;
+    
+    int asize = RARRAY($input)->len;
+    /* example: printf("%f,%f",$1[0][0],$1[1][0]); */
+    $result = rb_ary_new();
+    for (i=0; i<asize; i++)
+      rb_ary_push($result,rb_float_new($3[i]));
+  }
+
+  %typemap(freearg) (int num, type* data, type *result) {
+    /* MAP_INOUT_ARRAY %typemap(in) (int, type* data, type *result) */
+    if ($2) free($2);
+    if ($3) free($3);
+  }
+%enddef
+
+%define MAP_OUTARRAY(type,sizearg,result)
   /* Pass a result through an array pointer */
 
   %typemap(in) type *result {
-    /* %typemap(in) type *result: ignore */
+    /* MAP_OUTARRAY %typemap(in) type *result: ignore */
   }
 
   %typemap(out) type *result {
-    /* %typemap(out) type *result: ignore */
+    /* MAP_OUT_ARRAY %typemap(out) type *result: ignore */
   }
 
   %typemap(argout) type *result {
-    /* %typemap(argout) type *result */
+    /* MAP_OUT_ARRAY %typemap(argout) type *result */
     int i;
     int len = sizearg;
 
@@ -82,7 +127,7 @@
   }
 
   %typemap(freearg) type *result {
-    /* %typemap(freearg) type *result */
+    /* MAP_OUT_ARRAY %typemap(freearg) type *result */
     if ($1) free($1);
   }   
 %enddef
diff --git a/src/mappings/swig/typemaps/ruby/biolib_matrix.i b/src/mappings/swig/typemaps/ruby/biolib_matrix.i
index 27cc40e..6cc87d2 100644
--- a/src/mappings/swig/typemaps/ruby/biolib_matrix.i
+++ b/src/mappings/swig/typemaps/ruby/biolib_matrix.i
@@ -13,9 +13,9 @@
  *   raise "Test failed with value #{result}" if result[3] != 4
  */
 
-%define BIOLIB_INMATRIXASARRAY(type,colsarg,rowsarg,name)
+%define MAP_IN_DIM_MATRIXASARRAY(type,colsarg,rowsarg,name)
   %typemap(in) type **name {
-    /* BIOLIB_INMATRIXASARRAY %typemap(in) type **name */
+    /* MAP_IN_DIM_MATRIXASARRAY %typemap(in) type **name */
     int cols = colsarg;
     int rows = rowsarg; 
     int i, row;
@@ -24,7 +24,7 @@
     type **dptr;
 
     if (!rb_obj_is_kind_of($input,rb_cArray))
-      rb_raise(rb_eArgError, "BIOLIB_INMATRIXASARRAY expected Array of values for type **$1_name");
+      rb_raise(rb_eArgError, "MAP_IN_DIM_MATRIXASARRAY expected Array of values for type **$1_name");
     len = rows * cols;
     /* len = RARRAY($input)->len; */
     dptr = (type **)malloc(rows*sizeof(type *));
@@ -38,7 +38,7 @@
 
 
   %typemap(freearg) type **name {
-    /* BIOLIB_INMATRIXASARRAY %typemap(freearg) type **name */
+    /* MAP_IN_DIM_MATRIXASARRAY %typemap(freearg) type **name */
     if ($1) {
       free(*$1);
       free($1);
@@ -46,11 +46,11 @@
   }
 %enddef
 
-%define BIOLIB_INOUTMATRIXASARRAY(type,colsarg,rowsarg,name)
-  BIOLIB_INMATRIXASARRAY(type,colsarg,rowsarg,name);
+%define MAP_INOUT_DIM_MATRIXASARRAY(type,colsarg,rowsarg,name)
+  MAP_IN_DIM_MATRIXASARRAY(type,colsarg,rowsarg,name);
 
   %typemap(argout) type **name {
-    /* BIOLIB_INOUTMATRIXASARRAY %typemap(argout) type **name */
+    /* MAP_INOUT_DIM_MATRIXASARRAY %typemap(argout) type **name */
     int i,j;
     int cols = colsarg;
     int rows = rowsarg;