There is a sample shell script installed called 'sample-ctrec'.
+HDF FILE FORMAT
+===============
+
+If the HDF library is compiled into CTSim, it will be used for the
+raysum and image files.
+
+Reconstruction Groups
+---------------------
+Group Name="Recon"
+ SubDataset="ReconParam"
+ SubGroup="Proj"
+ SubDataset="Raysum"
+ SubDataset="Geometry"
+ SubGroup="Phantom"
+ SubDataset "FImage"
+ SubGroup="Reconstr"
+ SubDataset "FImage"
+
+Image Dataset
+-------------
+Name="FImage"
+DataType: FLOAT
+Attributes:
+ "XSize" DOUBLE : X size of pixel in world coordinates
+ "YSize" DOUBLE : Y size of pixel in world coordinates
+
+
+Raysum Group
+-------------
+Group Name="Proj"
+Proj Dataset
+ Name="Raysum"
+ DataType: FLOAT
+ Dim: 2 (nviews x ndet)
+ Attributes:
+Geometry Dataset
+ Name="Geometry"
+ DataType: FLOAT
+ Dim: 1 (nviews x 1)
+ Data: For each view, store view_angle
+ Attributes:
+ "GEOMCODE" INT : Geometry Code
+ "DETSTART"
+ "DETINC"
+ "ROTSTART"
+ "ROTINC"
CLOSING
--------
+=======
Please enjoy CTSim. I'd like to hear any feedback