Merge pull request #17 from avinashlalotra/masterHEADmaster

Abinash's Work

1 files changed, 37 insertions, 25 deletions

diff --git a/macros/idct1.sci b/macros/idct1.sci
index 5015187..3f007fa 100644
--- a/macros/idct1.sci
+++ b/macros/idct1.sci
@@ -1,27 +1,39 @@
+/*Description
+    This function computes the inverse discrete cosine transform of input X.
+    If N is given, then X is padded or trimmed to length N before computing the transform.
+    If X is a matrix, compute the transform along the columns of the the matrix.
+    The transform is faster if X is real-valued and even length.
+Calling Sequence
+    Y = idct1(X)
+    Y = idct1(X, N)
+Parameters
+    X: Matrix or integer
+    N: If N is given, then X is padded or trimmed to length N before computing the transform.
+Examples
+    idct1([1,3,6])
+    ans =
+        5.1481604  - 4.3216292    0.9055197
+*/
 function y = idct1(x,n)
-//Compute the inverse discrete cosine transform of input.
-//Calling Sequence
-//Y = idct1(X)
-//Y = idct1(X, N)
-//Parameters
-//X: Matrix or integer
-//N: If N is given, then X is padded or trimmed to length N before computing the transform.
-//Description
-// This function computes the inverse discrete cosine transform of input X.  If N is given, then X is padded or trimmed to length N before computing the transform.  If X is a matrix, compute the transform along the columns of the the matrix.  The transform is faster if X is real-valued and even length.
-//Examples
-//idct1([1,3,6])
-//ans = 
-//     5.1481604  - 4.3216292    0.9055197 
-funcprot(0);
-rhs=argn(2);
-if (rhs<1 | rhs>2) then
-    error("Wrong number of input arguments.");
-end
-select(rhs)
-case 1 then
-    y=callOctave("idct",x);
-case 2 then 
-    y=callOctave("idct",x,n);
-end
-
+    funcprot(0);
+    rhs=argn(2);
+    if (rhs<1 | rhs>2) then
+        error("Wrong number of input arguments.");
+    end
+    nsdim=1;
+    siz=size(x);
+    len=length(siz);
+    for i=1:len
+        if siz(i) ~= 1 then 
+            nsdim=i//calculating along non-singlton dimension
+            break;
+        end;
+    end;
+    select(rhs)
+    case 1 then
+        y=idct(x,nsdim);
+    case 2 then
+        siz(nsdim)=n;
+        y=idct(resize_matrix(x,siz),nsdim)
+    end;
 endfunction