+ void convertToImagefile (ImageFile& im, double dViewRatio, const int in_nsample, const int trace,
+ const int colStart, const int colCount, bool bStoreAtColumnPos) const;
+ void convertToImagefile (ImageFile& im, int iNX, double dViewRatio, const int in_nsample, const int trace,
+ const int colStart, const int colCount, int iStorageOffset) const;