#include "mfhdf.h" #define FILE_NAME "SDS.hdf" #define SDS_NAME "SDStemplate" #define WRONG_NAME "WrongName" #define X_LENGTH 5 #define Y_LENGTH 16 int main() { /************************* Variable declaration **************************/ int32 sd_id, sds_id, sds_index; intn status; int32 start[2], edges[2]; int32 data[Y_LENGTH][X_LENGTH]; int j; /********************* End of variable declaration ***********************/ /* * Open the file for reading and initialize the SD interface. */ sd_id = SDstart (FILE_NAME, DFACC_READ); /* * Find index of the data set with the name specified in WRONG_NAME. * Error condition occurs, since the data set with that name does not exist * in the file. */ sds_index = SDnametoindex (sd_id, WRONG_NAME); if (sds_index == FAIL) printf ("Data set with the name \"WrongName\" does not exist\n"); /* * Find index of the data set with the name specified in SDS_NAME and use * the index to select the data set. */ sds_index = SDnametoindex (sd_id, SDS_NAME); sds_id = SDselect (sd_id, sds_index); /* * Set elements of the array start to 0, elements of the array edges to * SDS dimensions, and use NULL for stride argument in SDreaddata to read * the entire data. */ start[0] = 0; start[1] = 0; edges[0] = Y_LENGTH; edges[1] = X_LENGTH; /* * Read the entire data into the buffer named data. */ status = SDreaddata (sds_id, start, NULL, edges, (VOIDP)data); /* * Print 10th row; the following numbers should be displayed: * * 10 1000 12 13 14 */ for (j = 0; j < X_LENGTH; j++) printf ("%d ", data[9][j]); printf ("\n"); /* * Terminate access to the data set. */ status = SDendaccess (sds_id); /* * Terminate access to the SD interface and close the file. */ status = SDend (sd_id); return 0; }