int main(int argc, char * argv[])
{
FSLIO *fslio;
void *buffer;
char *f1name;
double ***vol;
int x,y,z,t;
/*** process commandline parameters */
if (argc < 2) {
pusage(argv[0]);
exit(1);
}
/************************* PRINT ***************************/
if (!strncmp(argv[1],"print",5)) {
if (argc != 3) {
fprintf(stderr, "\nError, print command takes one parameter: print <dataset>\n");
exit(1);
}
f1name = argv[2];
/** open nifti dataset */
fslio = FslInit();
buffer = FslReadAllVolumes(fslio,f1name);
if (buffer == NULL) {
fprintf(stderr, "\nError opening and reading %s.\n",f1name);
exit(1);
}
nifti_image_infodump(fslio->niftiptr);
exit(0);
}
/************************* PEEK ***************************/
if (!strncmp(argv[1],"peek",4)) {
if (argc != 7) {
fprintf(stderr, "\nError, peek command takes five parameters: peek <dataset> X Y Z T\n");
exit(1);
}
/**** get inputs */
f1name = argv[2];
x = atoi(argv[3]);
y = atoi(argv[4]);
z = atoi(argv[5]);
t = atoi(argv[6]);
/** open nifti dataset header */
fslio = FslReadHeader(f1name);
if (fslio == NULL) {
fprintf(stderr, "\nError, could not read header info for %s.\n",f1name);
exit(1);
}
/**** check inputs */
if ( (x<0) || (x>=fslio->niftiptr->nx) ) {
fprintf(stderr, "\nError: x index (%d) out of range [0..%d]\n",x,fslio->niftiptr->nx-1);
exit(1);
}
if ( (y<0) || (y>=fslio->niftiptr->ny) ) {
fprintf(stderr, "\nError: y index (%d) out of range [0..%d]\n",y,fslio->niftiptr->ny-1);
exit(1);
}
if ( (z<0) || (z>=fslio->niftiptr->nz) ) {
fprintf(stderr, "\nError: z index (%d) out of range [0..%d]\n",z,fslio->niftiptr->nz-1);
exit(1);
}
if ( (t<0) || (t>=fslio->niftiptr->nt) ) {
fprintf(stderr, "\nError: t index (%d) out of range [0..%d]\n",t,fslio->niftiptr->nt-1);
exit(1);
}
/*** get volume data as scaled doubles */
vol = FslGetVolumeAsScaledDouble(fslio,t);
if (vol == NULL) {
fprintf(stderr, "\nError accessing %s\n",f1name);
exit(1);
}
else {
fprintf(stderr, "\nLocation %d %d %d %d: %.4f\n",x,y,z,t,vol[z][y][x]);
exit(0);
}
}
fprintf(stderr, "\nError, unrecognized command %s\n",argv[1]);
pusage(argv[0]);
exit(1);
}
int
main(int argc, char **argv)
{
/* NIFTI stuff */
nifti_image *nii_ptr;
nifti_image nii_rec;
int nii_dimids[MAX_NII_DIMS];
int nii_dir[MAX_NII_DIMS];
int nii_map[MAX_NII_DIMS];
unsigned long nii_lens[MAX_NII_DIMS];
int nii_ndims;
static int nifti_filetype;
static int nifti_datatype;
static int nifti_signed = 1;
/* MINC stuff */
int mnc_fd; /* MINC file descriptor */
nc_type mnc_type; /* MINC data type as read */
int mnc_ndims; /* MINC image dimension count */
int mnc_dimids[MAX_VAR_DIMS]; /* MINC image dimension identifiers */
long mnc_dlen; /* MINC dimension length value */
double mnc_dstep; /* MINC dimension step value */
int mnc_icv; /* MINC image conversion variable */
int mnc_vid; /* MINC Image variable ID */
long mnc_start[MAX_VAR_DIMS]; /* MINC data starts */
long mnc_count[MAX_VAR_DIMS]; /* MINC data counts */
int mnc_signed; /* MINC if output voxels are signed */
double real_range[2]; /* MINC real range (min, max) */
double input_valid_range[2]; /* MINC valid range (min, max) */
double output_valid_range[2]; /* Valid range of output data. */
double nifti_slope; /* Slope to be applied to output voxels. */
double nifti_inter; /* Intercept to be applied to output voxels. */
double total_valid_range; /* Overall valid range (max - min). */
double total_real_range; /* Overall real range (max - min). */
/* Other stuff */
char out_str[1024]; /* Big string for filename */
char att_str[1024]; /* Big string for attribute values */
int i; /* Generic loop counter the first */
int j; /* Generic loop counter the second */
char *str_ptr; /* Generic ASCIZ string pointer */
int r; /* Result code. */
static int vflag = 0; /* Verbose flag (default is quiet) */
static ArgvInfo argTable[] = {
{NULL, ARGV_HELP, NULL, NULL,
"Output voxel data type specification"},
{"-byte", ARGV_CONSTANT, (char *)DT_INT8, (char *)&nifti_datatype,
"Write voxel data in 8-bit signed integer format."},
{"-short", ARGV_CONSTANT, (char *)DT_INT16, (char *)&nifti_datatype,
"Write voxel data in 16-bit signed integer format."},
{"-int", ARGV_CONSTANT, (char *)DT_INT32, (char *)&nifti_datatype,
"Write voxel data in 32-bit signed integer format."},
{"-float", ARGV_CONSTANT, (char *)DT_FLOAT32, (char *)&nifti_datatype,
"Write voxel data in 32-bit floating point format."},
{"-double", ARGV_CONSTANT, (char *)DT_FLOAT64, (char *)&nifti_datatype,
"Write voxel data in 64-bit floating point format."},
{"-signed", ARGV_CONSTANT, (char *)1, (char *)&nifti_signed,
"Write integer voxel data in signed format."},
{"-unsigned", ARGV_CONSTANT, (char *)0, (char *)&nifti_signed,
"Write integer voxel data in unsigned format."},
{NULL, ARGV_HELP, NULL, NULL,
"Output file format specification"},
{"-dual", ARGV_CONSTANT, (char *)FT_NIFTI_DUAL,
(char *)&nifti_filetype,
"Write NIfTI-1 two-file format (.img and .hdr)"},
{"-ASCII", ARGV_CONSTANT, (char *)FT_NIFTI_ASCII,
(char *)&nifti_filetype,
"Write NIfTI-1 ASCII header format (.nia)"},
{"-nii", ARGV_CONSTANT, (char *)FT_NIFTI_SINGLE,
(char *)&nifti_filetype,
"Write NIfTI-1 one-file format (.nii)"},
{"-analyze", ARGV_CONSTANT, (char *)FT_ANALYZE,
(char *)&nifti_filetype,
"Write an Analyze two-file format file (.img and .hdr)"},
{NULL, ARGV_HELP, NULL, NULL,
"Other options"},
{"-quiet", ARGV_CONSTANT, (char *)0,
(char *)&vflag,
"Quiet operation"},
{"-verbose", ARGV_CONSTANT, (char *)1,
(char *)&vflag,
"Quiet operation"},
{NULL, ARGV_END, NULL, NULL, NULL}
};
ncopts = 0; /* Clear global netCDF error reporting flag */
/* Default NIfTI file type is "NII", single binary file
*/
nifti_filetype = FT_UNSPECIFIED;
nifti_datatype = DT_UNKNOWN;
if (ParseArgv(&argc, argv, argTable, 0) || (argc < 2)) {
fprintf(stderr, "Too few arguments\n");
return usage();
}
if (!nifti_signed) {
switch (nifti_datatype) {
case DT_INT8:
nifti_datatype = DT_UINT8;
break;
case DT_INT16:
nifti_datatype = DT_UINT16;
break;
case DT_INT32:
nifti_datatype = DT_UINT32;
break;
}
}
switch (nifti_datatype){
case DT_INT8:
case DT_UINT8:
mnc_type = NC_BYTE;
break;
case DT_INT16:
case DT_UINT16:
mnc_type = NC_SHORT;
break;
case DT_INT32:
case DT_UINT32:
mnc_type = NC_INT;
break;
case DT_FLOAT32:
mnc_type = NC_FLOAT;
break;
case DT_FLOAT64:
mnc_type = NC_DOUBLE;
break;
}
if (argc == 2) {
strcpy(out_str, argv[1]);
str_ptr = strrchr(out_str, '.');
if (str_ptr != NULL && !strcmp(str_ptr, ".mnc")) {
*str_ptr = '\0';
}
}
else if (argc == 3) {
strcpy(out_str, argv[2]);
str_ptr = strrchr(out_str, '.');
if (str_ptr != NULL) {
/* See if a recognized file extension was specified. If so,
* we trim it off and set the output file type if none was
* specified. If the extension is not recognized, assume
* that we will form the filename by just adding the right
* extension for the selected output format.
*/
if (!strcmp(str_ptr, ".nii")) {
if (nifti_filetype == FT_UNSPECIFIED) {
nifti_filetype = FT_NIFTI_SINGLE;
}
*str_ptr = '\0';
}
else if (!strcmp(str_ptr, ".img") ||
!strcmp(str_ptr, ".hdr")) {
if (nifti_filetype == FT_UNSPECIFIED) {
nifti_filetype = FT_NIFTI_DUAL;
}
*str_ptr = '\0';
}
else if (!strcmp(str_ptr, ".nia")) {
if (nifti_filetype == FT_UNSPECIFIED) {
nifti_filetype = FT_NIFTI_ASCII;
}
*str_ptr = '\0';
}
}
}
else {
fprintf(stderr, "Filename argument required\n");
return usage();
}
/* Open the MINC file. It needs to exist.
*/
mnc_fd = miopen(argv[1], NC_NOWRITE);
if (mnc_fd < 0) {
fprintf(stderr, "Can't find input file '%s'\n", argv[1]);
return (-1);
}
/* Find the MINC image variable. If we can't find it, there is no
* further processing possible...
*/
mnc_vid = ncvarid(mnc_fd, MIimage);
if (mnc_vid < 0) {
fprintf(stderr, "Can't locate the image variable (mnc_vid=%d)\n", mnc_vid);
return (-1);
}
/* Find out about the MINC image variable - specifically, how many
* dimensions, and which dimensions.
*/
r = ncvarinq(mnc_fd, mnc_vid, NULL, NULL, &mnc_ndims, mnc_dimids, NULL);
if (r < 0) {
fprintf(stderr, "Can't read information from image variable\n");
return (-1);
}
if (mnc_ndims > MAX_NII_DIMS) {
fprintf(stderr, "NIfTI-1 files may contain at most %d dimensions\n",
MAX_NII_DIMS);
return (-1);
}
/* Initialize the NIfTI structure
*/
nii_ptr = &nii_rec;
init_nifti_header(nii_ptr);
/* For now we just use the mnc2nii command line as the description
* field. Probably we should use something better, perhaps a
* combination of some other standard MINC fields that might
* provide more information.
*/
str_ptr = nii_ptr->descrip;
for (i = 0; i < argc; i++) {
char *arg_ptr = argv[i];
if ((str_ptr - nii_ptr->descrip) >= MAX_NII_DESCRIP) {
break;
}
if (i != 0) {
*str_ptr++ = ' ';
}
while (*arg_ptr != '\0' &&
(str_ptr - nii_ptr->descrip) < MAX_NII_DESCRIP) {
*str_ptr++ = *arg_ptr++;
}
*str_ptr = '\0';
}
nii_ptr->fname = malloc(strlen(out_str) + 4 + 1);
nii_ptr->iname = malloc(strlen(out_str) + 4 + 1);
strcpy(nii_ptr->fname, out_str);
strcpy(nii_ptr->iname, out_str);
switch (nifti_filetype) {
case FT_ANALYZE:
strcat(nii_ptr->fname, ".hdr");
strcat(nii_ptr->iname, ".img");
break;
case FT_NIFTI_SINGLE:
strcat(nii_ptr->fname, ".nii");
strcat(nii_ptr->iname, ".nii");
break;
case FT_NIFTI_DUAL:
strcat(nii_ptr->fname, ".hdr");
strcat(nii_ptr->iname, ".img");
break;
case FT_NIFTI_ASCII:
strcat(nii_ptr->fname, ".nia");
strcat(nii_ptr->iname, ".nia");
break;
default:
fprintf(stderr, "Unknown output file type %d\n", nifti_filetype);
return (-1);
}
/* Get real voxel range for the input file.
*/
miget_image_range(mnc_fd, real_range);
/* Get the actual valid voxel value range.
*/
miget_valid_range(mnc_fd, mnc_vid, input_valid_range);
/* Find the default range for the output type. Our output file
* will use the full legal range of the output type if it is
* an integer.
*/
if (nifti_datatype == DT_UNKNOWN) {
nii_ptr->datatype = DT_FLOAT32; /* Default */
mnc_type = NC_FLOAT;
mnc_signed = 1;
}
else {
nii_ptr->datatype = nifti_datatype;
mnc_signed = nifti_signed;
}
if (vflag) {
fprintf(stderr, "MINC type %d signed %d\n", mnc_type, mnc_signed);
}
miget_default_range(mnc_type, mnc_signed, output_valid_range);
total_valid_range = input_valid_range[1] - input_valid_range[0];
total_real_range = real_range[1] - real_range[0];
if ((output_valid_range[1] - output_valid_range[0]) > total_valid_range) {
/* Empirically, forcing the valid range to be the nearest power
* of two greater than the existing valid range seems to improve
* the behavior of the conversion. This is at least in part because
* of the limited precision of the NIfTI-1 voxel scaling fields.
*/
double new_range = nearest_power_of_two(total_valid_range);
if (new_range - 1.0 >= total_valid_range) {
new_range -= 1.0;
}
if (output_valid_range[1] > total_valid_range) {
output_valid_range[0] = 0;
output_valid_range[1] = new_range;
}
else {
output_valid_range[1] = output_valid_range[0] + new_range;
}
}
else {
/* The new range can't fully represent the input range. Use the
* full available range, and warn the user that they may have a
* problem.
*/
printf("WARNING: Range of input exceeds range of output format.\n");
}
if (vflag) {
printf("Real range: %f %f Input valid range: %f %f Output valid range: %f %f\n",
real_range[0], real_range[1],
input_valid_range[0], input_valid_range[1],
output_valid_range[0], output_valid_range[1]);
}
/* If the output type is not floating point, we may need to scale the
* voxel values.
*/
if (mnc_type != NC_FLOAT && mnc_type != NC_DOUBLE) {
/* Figure out how to map pixel values into the range of the
* output datatype.
*/
nifti_slope = ((real_range[1] - real_range[0]) /
(output_valid_range[1] - output_valid_range[0]));
if (nifti_slope == 0.0) {
nifti_slope = 1.0;
}
nifti_inter = real_range[0] - (output_valid_range[0] * nifti_slope);
/* One problem with NIfTI-1 is the limited precision of the
* scl_slope and scl_inter fields (they are just 32-bits). So
* we look for possible issues and warn about that here.
*/
if (nifti_inter != (float) nifti_inter ||
nifti_slope != (float) nifti_slope) {
double epsilon_i = nifti_inter - (float) nifti_inter;
double epsilon_s = nifti_slope - (float) nifti_slope;
/* If the loss in precision is more than one part per thousand
* of the real range, flag this as a problem!
*/
if ((epsilon_i > total_real_range / 1.0e3) ||
(epsilon_s > total_real_range / 1.0e3)) {
fprintf(stderr, "ERROR: Slope and intercept cannot be represented in the NIfTI-1 header.\n");
fprintf(stderr, " slope %f (%f), intercept %f (%f)\n",
nifti_slope, (float) nifti_slope,
nifti_inter, (float) nifti_inter);
return (-1);
}
}
}
else {
nifti_slope = 0.0;
}
nii_ptr->scl_slope = nifti_slope;
nii_ptr->scl_inter = nifti_inter;
nii_ptr->nvox = 1; /* Initial value for voxel count */
/* Find all of the dimensions of the MINC file, in the order they
* will be listed in the NIfTI-1/Analyze file. We use this to build
* a map for restructuring the data according to the normal rules
* of NIfTI-1.
*/
nii_ndims = 0;
for (i = 0; i < MAX_NII_DIMS; i++) {
if (dimnames[i] == NULL) {
nii_dimids[nii_ndims] = -1;
continue;
}
nii_dimids[nii_ndims] = ncdimid(mnc_fd, dimnames[i]);
if (nii_dimids[nii_ndims] == -1) {
continue;
}
/* Make sure the dimension is actually used to define the image.
*/
for (j = 0; j < mnc_ndims; j++) {
if (nii_dimids[nii_ndims] == mnc_dimids[j]) {
nii_map[nii_ndims] = j;
break;
}
}
if (j < mnc_ndims) {
mnc_dlen = 1;
mnc_dstep = 0;
ncdiminq(mnc_fd, nii_dimids[nii_ndims], NULL, &mnc_dlen);
ncattget(mnc_fd, ncvarid(mnc_fd, dimnames[i]), MIstep, &mnc_dstep);
if (mnc_dstep < 0) {
nii_dir[nii_ndims] = -1;
mnc_dstep = -mnc_dstep;
}
else {
nii_dir[nii_ndims] = 1;
}
nii_lens[nii_ndims] = mnc_dlen;
nii_ndims++;
}
nii_ptr->dim[dimmap[i]] = (int) mnc_dlen;
nii_ptr->nvox *= mnc_dlen;
nii_ptr->pixdim[dimmap[i]] = (float) mnc_dstep;
}
/* Here we do some "post-processing" of the results. Make certain that
* the nt value is never zero, and make certain that ndim is set to
* 4 if there is a time dimension and 5 if there is a vector dimension
*/
if (nii_ptr->dim[3] > 1 && nii_ndims < 4) {
nii_ndims = 4;
}
if (nii_ptr->dim[4] > 1) {
nii_ptr->intent_code = NIFTI_INTENT_VECTOR;
nii_ndims = 5;
}
nii_ptr->ndim = nii_ndims; /* Total number of dimensions in file */
nii_ptr->nx = nii_ptr->dim[0];
nii_ptr->ny = nii_ptr->dim[1];
nii_ptr->nz = nii_ptr->dim[2];
nii_ptr->nt = nii_ptr->dim[3];
nii_ptr->nu = nii_ptr->dim[4];
nii_ptr->dx = nii_ptr->pixdim[0];
nii_ptr->dy = nii_ptr->pixdim[1];
nii_ptr->dz = nii_ptr->pixdim[2];
nii_ptr->dt = nii_ptr->pixdim[3];
nii_ptr->du = 1; /* MINC files don't define a sample size for a vector_dimension */
nii_ptr->nifti_type = nifti_filetype;
/* Load the direction_cosines and start values into the NIfTI-1
* sform structure.
*
*/
for (i = 0; i < MAX_SPACE_DIMS; i++) {
int id = ncvarid(mnc_fd, mnc_spatial_names[i]);
double start;
double step;
double dircos[MAX_SPACE_DIMS];
int tmp;
if (id < 0) {
continue;
}
/* Set default values */
start = 0.0;
step = 1.0;
dircos[DIM_X] = dircos[DIM_Y] = dircos[DIM_Z] = 0.0;
dircos[i] = 1.0;
miattget(mnc_fd, id, MIstart, NC_DOUBLE, 1, &start, &tmp);
miattget(mnc_fd, id, MIstep, NC_DOUBLE, 1, &step, &tmp);
miattget(mnc_fd, id, MIdirection_cosines, NC_DOUBLE, MAX_SPACE_DIMS,
dircos, &tmp);
ncdiminq(mnc_fd, ncdimid(mnc_fd, mnc_spatial_names[i]), NULL,
&mnc_dlen);
if (step < 0) {
step = -step;
start = start - step * (mnc_dlen - 1);
}
nii_ptr->sto_xyz.m[0][i] = step * dircos[0];
nii_ptr->sto_xyz.m[1][i] = step * dircos[1];
nii_ptr->sto_xyz.m[2][i] = step * dircos[2];
nii_ptr->sto_xyz.m[0][3] += start * dircos[0];
nii_ptr->sto_xyz.m[1][3] += start * dircos[1];
nii_ptr->sto_xyz.m[2][3] += start * dircos[2];
miattgetstr(mnc_fd, id, MIspacetype, sizeof(att_str), att_str);
/* Try to set the S-transform code correctly.
*/
if (!strcmp(att_str, MI_TALAIRACH)) {
nii_ptr->sform_code = NIFTI_XFORM_TALAIRACH;
}
else if (!strcmp(att_str, MI_CALLOSAL)) {
/* TODO: Not clear what do do here... */
nii_ptr->sform_code = NIFTI_XFORM_SCANNER_ANAT;
}
else { /* MI_NATIVE or unknown */
nii_ptr->sform_code = NIFTI_XFORM_SCANNER_ANAT;
}
}
/* So the last row is right... */
nii_ptr->sto_xyz.m[3][0] = 0.0;
nii_ptr->sto_xyz.m[3][1] = 0.0;
nii_ptr->sto_xyz.m[3][2] = 0.0;
nii_ptr->sto_xyz.m[3][3] = 1.0;
nii_ptr->sto_ijk = nifti_mat44_inverse(nii_ptr->sto_xyz);
nifti_datatype_sizes(nii_ptr->datatype,
&nii_ptr->nbyper, &nii_ptr->swapsize);
if (vflag) {
nifti_image_infodump(nii_ptr);
}
/* Now load the actual MINC data. */
nii_ptr->data = malloc(nii_ptr->nbyper * nii_ptr->nvox);
if (nii_ptr->data == NULL) {
fprintf(stderr, "Out of memory.\n");
return (-1);
}
mnc_icv = miicv_create();
miicv_setint(mnc_icv, MI_ICV_TYPE, mnc_type);
miicv_setstr(mnc_icv, MI_ICV_SIGN, (mnc_signed) ? MI_SIGNED : MI_UNSIGNED);
miicv_setdbl(mnc_icv, MI_ICV_VALID_MAX, output_valid_range[1]);
miicv_setdbl(mnc_icv, MI_ICV_VALID_MIN, output_valid_range[0]);
miicv_setdbl(mnc_icv, MI_ICV_IMAGE_MAX, real_range[1]);
miicv_setdbl(mnc_icv, MI_ICV_IMAGE_MIN, real_range[0]);
miicv_setdbl(mnc_icv, MI_ICV_DO_NORM, TRUE);
miicv_setdbl(mnc_icv, MI_ICV_USER_NORM, TRUE);
miicv_attach(mnc_icv, mnc_fd, mnc_vid);
/* Read in the entire hyperslab from the file.
*/
for (i = 0; i < mnc_ndims; i++) {
ncdiminq(mnc_fd, mnc_dimids[i], NULL, &mnc_count[i]);
mnc_start[i] = 0;
}
r = miicv_get(mnc_icv, mnc_start, mnc_count, nii_ptr->data);
if (r < 0) {
fprintf(stderr, "Read error\n");
return (-1);
}
/* Shut down the MINC stuff now that it has done its work.
*/
miicv_detach(mnc_icv);
miicv_free(mnc_icv);
miclose(mnc_fd);
if (vflag) {
/* Debugging stuff - just to check the contents of these arrays.
*/
for (i = 0; i < nii_ndims; i++) {
printf("%d: %ld %d %d\n",
i, nii_lens[i], nii_map[i], nii_dir[i]);
}
printf("bytes per voxel %d\n", nii_ptr->nbyper);
printf("# of voxels %ld\n", nii_ptr->nvox);
}
/* Rearrange the data to correspond to the NIfTI dimension ordering.
*/
restructure_array(nii_ndims,
nii_ptr->data,
nii_lens,
nii_ptr->nbyper,
nii_map,
nii_dir);
if (vflag) {
/* More debugging stuff - check coordinate transform.
*/
test_xform(nii_ptr->sto_xyz, 0, 0, 0);
test_xform(nii_ptr->sto_xyz, 10, 0, 0);
test_xform(nii_ptr->sto_xyz, 0, 10, 0);
test_xform(nii_ptr->sto_xyz, 0, 0, 10);
test_xform(nii_ptr->sto_xyz, 10, 10, 10);
}
if (vflag) {
fprintf(stdout, "Writing NIfTI-1 file...");
}
nifti_image_write(nii_ptr);
if (vflag) {
fprintf(stdout, "done.\n");
}
return (0);
}
int main (int argc, char *argv[])
{
char TEMP_STR[256];
nifti_set_debug_level(3);
int Errors=0;
{
PrintTest("NOT REALLY AN ERROR, JUST TESTING THE ERROR TEST REPORTING MECHANISM",1,NIFTITEST_FALSE,&Errors);
PrintTest("NOT REALLY AN ERROR, JUST TESTING THE ERROR COUNTING MECHANISM",Errors==1,NIFTITEST_FALSE,&Errors);
Errors=0;
}
{
const char write_image_filename[6][64]={
"ATestReferenceImageForReadingAndWriting.nii",
"ATestReferenceImageForReadingAndWriting.hdr",
"ATestReferenceImageForReadingAndWriting.img",
"ATestReferenceImageForReadingAndWriting.nii.gz",
"ATestReferenceImageForReadingAndWriting.hdr.gz",
"ATestReferenceImageForReadingAndWriting.img.gz"
};
printf("======= Testing All Nifti Valid Names ======\n");
fflush(stdout);
unsigned int filenameindex;
for(filenameindex=0;filenameindex<6; filenameindex++)
{
char buf[512];
int CompressedTwoFile = strstr(write_image_filename[filenameindex],".img.gz") != 0 ||
strstr(write_image_filename[filenameindex],".hdr.gz") != 0;
printf("======= Testing with filename: %s ======\n",write_image_filename[filenameindex]);
fflush(stdout);
nifti_image * reference_image = generate_reference_image(write_image_filename[filenameindex],&Errors);
/*
* Add an extension to test extension reading
*/
{
static char ext[] = "THIS IS A TEST";
sprintf(buf,"nifti_add_extension %s",write_image_filename[filenameindex]);
PrintTest(buf,
nifti_add_extension(reference_image,
ext,sizeof(ext),
NIFTI_ECODE_COMMENT) == -1,
NIFTITEST_FALSE,&Errors);
sprintf(buf,"valid_nifti_extension %s",write_image_filename[filenameindex]);
PrintTest("valid_nifti_extensions",
valid_nifti_extensions(reference_image) == 0,
NIFTITEST_FALSE,&Errors);
}
PrintTest("Create reference image",reference_image==0,NIFTITEST_TRUE,&Errors);
nifti_image_write ( reference_image ) ;
/*
* test nifti_copy_extension
*/
{
nifti_image *nim = nifti_simple_init_nim();
PrintTest("nifti_copy_extension",
nifti_copy_extensions(nim,reference_image),
NIFTITEST_FALSE,&Errors);
nifti_image_free(nim);
nim = nifti_copy_nim_info(reference_image);
PrintTest("nifti_copy_nim_info",
nim == 0,
NIFTITEST_FALSE,&Errors);
PrintTest("nifti_nim_is_valid",
nifti_nim_is_valid(nim,0) == 0,
NIFTITEST_FALSE,&Errors);
nifti_image_free(nim);
}
{
nifti_image * reloaded_image = nifti_image_read(reference_image->fname,1);
PrintTest("Reload of image ",reloaded_image==0,NIFTITEST_TRUE,&Errors);
{
/*
* if the file is named '.img', '.hdr', '.img.gz', or '.hdr.gz', then
* the header extensions won't be saved with the file.
* The test will fail if it finds an extension in a 2-file NIfTI, or
* fails to find one in a '.nii' or '.nii.gz' file.
*/
int result = valid_nifti_extensions(reloaded_image);
sprintf(buf,"reload valid_nifti_extensions %s",write_image_filename[filenameindex]);
PrintTest(buf,
CompressedTwoFile ? result != 0 : result == 0,
NIFTITEST_FALSE,&Errors);
}
nifti_image_infodump(reloaded_image);
compare_reference_image_values(reference_image,reloaded_image,&Errors);
nifti_image_free(reloaded_image);
}
{
nifti_brick_list NB_orig, NB_select;
nifti_image * nim_orig, * nim_select;
int blist[5] = { 7, 0, 5, 5, 9 };
/*
* test some error paths in the nifti_image_read_bricks
*/
nim_orig = nifti_image_read_bricks(reference_image->fname,0,blist, &NB_orig);
PrintTest("invalid arg bricked image read 1",nim_orig != 0,NIFTITEST_FALSE,&Errors);
nim_orig = nifti_image_read_bricks(reference_image->fname, 0, NULL, &NB_orig);
PrintTest("Reload of bricked image",nim_orig == 0,NIFTITEST_FALSE,&Errors);
nifti_free_NBL(&NB_orig);
nifti_image_free(nim_orig);
nim_select = nifti_image_read_bricks(reference_image->fname, 5, blist, &NB_select);
PrintTest("Reload of bricked image with blist",nim_orig == 0,NIFTITEST_FALSE,&Errors);
nifti_free_NBL(&NB_select);
nifti_image_free(nim_select);
}
/*
* test nifti_update_dims_from_array
*/
PrintTest("nifti_update_dims_from_array -- valid dims",
nifti_update_dims_from_array(reference_image) != 0,
NIFTITEST_FALSE,&Errors);
reference_image->dim[0] = 8;
PrintTest("nifti_update_dims_from_array -- invalid dims",
nifti_update_dims_from_array(reference_image) == 0,
NIFTITEST_FALSE,&Errors);
{
nifti_1_header x = nifti_convert_nim2nhdr(reference_image);
char buf[512];
sprintf(buf,"nifti_hdr_looks_good %s",reference_image->fname);
PrintTest(buf,
!nifti_hdr_looks_good(&x),
NIFTITEST_FALSE,&Errors);
}
nifti_image_free(reference_image);
}
/*
* check nifti_findimgname
*/
{
char *imgname = nifti_findimgname("ATestReferenceImageForReadingAndWriting.hdr",2);
PrintTest("nifti_findimgname",
imgname == 0 ||
strcmp(imgname,"ATestReferenceImageForReadingAndWriting.img") != 0,
NIFTITEST_FALSE,&Errors);
free(imgname);
}
{
int IsNiftiFile;
IsNiftiFile = is_nifti_file(write_image_filename[0]);
PrintTest("is_nifti_file0",
IsNiftiFile != 1,NIFTITEST_FALSE,&Errors);
IsNiftiFile = is_nifti_file(write_image_filename[1]);
PrintTest("is_nifti_file1",
IsNiftiFile != 2,NIFTITEST_FALSE,&Errors);
IsNiftiFile = is_nifti_file(write_image_filename[3]);
PrintTest("is_nifti_file2",
IsNiftiFile != 1,NIFTITEST_FALSE,&Errors);
IsNiftiFile = is_nifti_file(write_image_filename[4]);
PrintTest("is_nifti_file2",
IsNiftiFile != 2,NIFTITEST_FALSE,&Errors);
}
}
{
/*
* test writing and reading an ascii file
*/
nifti_image * reference_image =
generate_reference_image("TestAsciiImage.nia",&Errors);
reference_image->nifti_type = 3;
nifti_image_write(reference_image);
nifti_image * reloaded_image = nifti_image_read("TestAsciiImage.nia",1);
PrintTest("Read/Write Ascii image",
reloaded_image == 0,NIFTITEST_FALSE,&Errors);
nifti_image_free(reference_image);
nifti_image_free(reloaded_image);
}
{
enum { NUM_FILE_NAMES=8 };
const char * FILE_NAMES[NUM_FILE_NAMES]={
"myimage",
"myimage.tif",
"myimage.tif.gz",
"myimage.nii",
"myimage.img.gz",
".nii",
".myhiddenimage",
".myhiddenimage.nii"
};
const char * KNOWN_FILE_BASENAMES[NUM_FILE_NAMES]={
"myimage",
"myimage.tif",
"myimage.tif.gz",
"myimage",
"myimage",
"",
".myhiddenimage",
".myhiddenimage"
};
const int KNOWN_nifti_validfilename[NUM_FILE_NAMES]={
1,
1,
1,
1,
1,
0,
1,
1
};
const int KNOWN_nifti_is_complete_filename[NUM_FILE_NAMES]={
0,
0,
0,
1,
1,
0,
0,
1
};
unsigned int fni;
for(fni=0;fni<NUM_FILE_NAMES;fni++)
{
printf("\nTesting \"%s\" filename\n",FILE_NAMES[fni]);
{
int KnownValid=nifti_validfilename(FILE_NAMES[fni]);
snprintf(TEMP_STR,256,"nifti_validfilename(\"%s\")=%d",FILE_NAMES[fni],KnownValid);
PrintTest(TEMP_STR,KnownValid != KNOWN_nifti_validfilename[fni],NIFTITEST_FALSE,&Errors);
}
{
int KnownValid=nifti_is_complete_filename(FILE_NAMES[fni]);
snprintf(TEMP_STR,256,"nifti_is_complete_filename(\"%s\")=%d",FILE_NAMES[fni],KnownValid);
PrintTest(TEMP_STR,KnownValid != KNOWN_nifti_is_complete_filename[fni],NIFTITEST_FALSE,&Errors);
}
{
char * basename=nifti_makebasename(FILE_NAMES[fni]);
snprintf(TEMP_STR,256,"nifti_makebasename(\"%s\")=\"%s\"",FILE_NAMES[fni],basename);
PrintTest(TEMP_STR,strcmp(basename,KNOWN_FILE_BASENAMES[fni]) != 0,NIFTITEST_FALSE,&Errors);
free(basename);
}
}
/*
* the following 2 calls aren't tested, because all they do is display
* compile-time information -- no way to fail unless writing to stdout fails.
*/
nifti_disp_lib_hist();
nifti_disp_lib_version();
/*
* the following exercises error path code in nifti_image_read_bricks
*/
PrintTest(
"nifti_image_read_bricks 1",
nifti_image_read_bricks((char *)0,-1,(const int *)0,(nifti_brick_list *)0) != 0,
NIFTITEST_FALSE,
&Errors);
PrintTest(
"nifti_image_read_bricks 1",
nifti_image_read_bricks("NOFILE.NOFILE",-1,(const int *)0,(nifti_brick_list *)0) != 0,
NIFTITEST_FALSE,
&Errors);
}
/*
* call nifti_datatype_string with all possible values
*/
#define nifti_datatype_test(constant,string) \
{ \
char buf[64]; \
sprintf(buf,"nifti_datatype_string %s",string); \
PrintTest( \
buf, \
strcmp(nifti_datatype_string(constant),string) != 0, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_datatype_test(DT_UNKNOWN,"UNKNOWN");
nifti_datatype_test(DT_BINARY, "BINARY");
nifti_datatype_test(DT_INT8, "INT8");
nifti_datatype_test(DT_UINT8, "UINT8");
nifti_datatype_test(DT_INT16, "INT16");
nifti_datatype_test(DT_UINT16, "UINT16");
nifti_datatype_test(DT_INT32, "INT32");
nifti_datatype_test(DT_UINT32, "UINT32");
nifti_datatype_test(DT_INT64, "INT64");
nifti_datatype_test(DT_UINT64, "UINT64");
nifti_datatype_test(DT_FLOAT32, "FLOAT32");
nifti_datatype_test(DT_FLOAT64, "FLOAT64");
nifti_datatype_test(DT_FLOAT128, "FLOAT128");
nifti_datatype_test(DT_COMPLEX64, "COMPLEX64");
nifti_datatype_test(DT_COMPLEX128, "COMPLEX128");
nifti_datatype_test(DT_COMPLEX256, "COMPLEX256");
nifti_datatype_test(DT_RGB24, "RGB24");
#define nifti_is_inttype_test(constant,rval) \
{ \
char buf[64]; \
sprintf(buf,"nifti_datatype_string %d",constant); \
PrintTest( \
buf, \
nifti_is_inttype(constant) != rval, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_is_inttype_test(DT_UNKNOWN,0);
nifti_is_inttype_test(DT_BINARY,0);
nifti_is_inttype_test(DT_INT8,1);
nifti_is_inttype_test(DT_UINT8,1);
nifti_is_inttype_test(DT_INT16,1);
nifti_is_inttype_test(DT_UINT16,1);
nifti_is_inttype_test(DT_INT32,1);
nifti_is_inttype_test(DT_UINT32,1);
nifti_is_inttype_test(DT_INT64,1);
nifti_is_inttype_test(DT_UINT64,1);
nifti_is_inttype_test(DT_FLOAT32,0);
nifti_is_inttype_test(DT_FLOAT64,0);
nifti_is_inttype_test(DT_FLOAT128,0);
nifti_is_inttype_test(DT_COMPLEX64,0);
nifti_is_inttype_test(DT_COMPLEX128,0);
nifti_is_inttype_test(DT_COMPLEX256,0);
nifti_is_inttype_test(DT_RGB24,1);
#define nifti_units_string_test(constant,string) \
{ \
char buf[64]; \
sprintf(buf,"nifti_units_string_test %s",string); \
PrintTest( \
buf, \
strcmp(nifti_units_string(constant),string) != 0, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_units_string_test(NIFTI_UNITS_METER,"m");
nifti_units_string_test(NIFTI_UNITS_MM,"mm");
nifti_units_string_test(NIFTI_UNITS_MICRON,"um");
nifti_units_string_test(NIFTI_UNITS_SEC,"s");
nifti_units_string_test(NIFTI_UNITS_MSEC,"ms");
nifti_units_string_test(NIFTI_UNITS_USEC,"us");
nifti_units_string_test(NIFTI_UNITS_HZ,"Hz");
nifti_units_string_test(NIFTI_UNITS_PPM,"ppm");
nifti_units_string_test(NIFTI_UNITS_RADS,"rad/s");
#define nifti_intent_string_test(constant,string) \
{ \
char buf[64]; \
sprintf(buf,"nifti_intent_string %s",string); \
PrintTest( \
buf, \
strcmp(nifti_intent_string(constant),string) != 0, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_intent_string_test(NIFTI_INTENT_CORREL,"Correlation statistic");
nifti_intent_string_test(NIFTI_INTENT_TTEST,"T-statistic");
nifti_intent_string_test(NIFTI_INTENT_FTEST,"F-statistic");
nifti_intent_string_test(NIFTI_INTENT_ZSCORE,"Z-score");
nifti_intent_string_test(NIFTI_INTENT_CHISQ,"Chi-squared distribution");
nifti_intent_string_test(NIFTI_INTENT_BETA,"Beta distribution");
nifti_intent_string_test(NIFTI_INTENT_BINOM,"Binomial distribution");
nifti_intent_string_test(NIFTI_INTENT_GAMMA,"Gamma distribution");
nifti_intent_string_test(NIFTI_INTENT_POISSON,"Poisson distribution");
nifti_intent_string_test(NIFTI_INTENT_NORMAL,"Normal distribution");
nifti_intent_string_test(NIFTI_INTENT_FTEST_NONC,"F-statistic noncentral");
nifti_intent_string_test(NIFTI_INTENT_CHISQ_NONC,"Chi-squared noncentral");
nifti_intent_string_test(NIFTI_INTENT_LOGISTIC,"Logistic distribution");
nifti_intent_string_test(NIFTI_INTENT_LAPLACE,"Laplace distribution");
nifti_intent_string_test(NIFTI_INTENT_UNIFORM,"Uniform distribition");
nifti_intent_string_test(NIFTI_INTENT_TTEST_NONC,"T-statistic noncentral");
nifti_intent_string_test(NIFTI_INTENT_WEIBULL,"Weibull distribution");
nifti_intent_string_test(NIFTI_INTENT_CHI,"Chi distribution");
nifti_intent_string_test(NIFTI_INTENT_INVGAUSS,"Inverse Gaussian distribution");
nifti_intent_string_test(NIFTI_INTENT_EXTVAL,"Extreme Value distribution");
nifti_intent_string_test(NIFTI_INTENT_PVAL,"P-value");
nifti_intent_string_test(NIFTI_INTENT_LOGPVAL,"Log P-value");
nifti_intent_string_test(NIFTI_INTENT_LOG10PVAL,"Log10 P-value");
nifti_intent_string_test(NIFTI_INTENT_ESTIMATE,"Estimate");
nifti_intent_string_test(NIFTI_INTENT_LABEL,"Label index");
nifti_intent_string_test(NIFTI_INTENT_NEURONAME,"NeuroNames index");
nifti_intent_string_test(NIFTI_INTENT_GENMATRIX,"General matrix");
nifti_intent_string_test(NIFTI_INTENT_SYMMATRIX,"Symmetric matrix");
nifti_intent_string_test(NIFTI_INTENT_DISPVECT,"Displacement vector");
nifti_intent_string_test(NIFTI_INTENT_VECTOR,"Vector");
nifti_intent_string_test(NIFTI_INTENT_POINTSET,"Pointset");
nifti_intent_string_test(NIFTI_INTENT_TRIANGLE,"Triangle");
nifti_intent_string_test(NIFTI_INTENT_QUATERNION,"Quaternion");
nifti_intent_string_test(NIFTI_INTENT_DIMLESS,"Dimensionless number");
nifti_intent_string_test(-200,"Unknown");
#define nifti_slice_string_test(constant,string) \
{ \
char buf[64]; \
sprintf(buf,"nifti_slice_string_test %s",string); \
PrintTest( \
buf, \
strcmp(nifti_slice_string(constant),string) != 0, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_slice_string_test(NIFTI_SLICE_SEQ_INC,"sequential_increasing");
nifti_slice_string_test(NIFTI_SLICE_SEQ_DEC,"sequential_decreasing");
nifti_slice_string_test(NIFTI_SLICE_ALT_INC,"alternating_increasing");
nifti_slice_string_test(NIFTI_SLICE_ALT_DEC,"alternating_decreasing");
nifti_slice_string_test(NIFTI_SLICE_ALT_INC2,"alternating_increasing_2");
nifti_slice_string_test(NIFTI_SLICE_ALT_DEC2,"alternating_decreasing_2");
#define nifti_orientation_string_test(constant,string) \
{ \
char buf[64]; \
sprintf(buf,"nifti_orientation_string_test %s",string); \
PrintTest( \
buf, \
strcmp(nifti_orientation_string(constant),string) != 0, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_orientation_string_test(NIFTI_L2R,"Left-to-Right");
nifti_orientation_string_test(NIFTI_R2L,"Right-to-Left");
nifti_orientation_string_test(NIFTI_P2A,"Posterior-to-Anterior");
nifti_orientation_string_test(NIFTI_A2P,"Anterior-to-Posterior");
nifti_orientation_string_test(NIFTI_I2S,"Inferior-to-Superior");
nifti_orientation_string_test(NIFTI_S2I,"Superior-to-Inferior");
#define nifti_datatype_sizes_test(constant,Nbyper,Swapsize) \
{ \
int nbyper; \
int swapsize; \
char buf[64]; \
sprintf(buf,"nifti_datatype_sizes_test %d",constant); \
nifti_datatype_sizes(constant,&nbyper,&swapsize); \
PrintTest( \
buf, \
nbyper != Nbyper || swapsize != Swapsize, \
NIFTITEST_FALSE, \
&Errors); \
}
nifti_datatype_sizes_test(DT_UINT8,1,0);
nifti_datatype_sizes_test(DT_UINT16,2,2);
nifti_datatype_sizes_test(DT_RGB24,3,0);
nifti_datatype_sizes_test(DT_FLOAT32,4,4);
nifti_datatype_sizes_test(DT_COMPLEX64,8,4);
nifti_datatype_sizes_test(DT_UINT64,8,8);
nifti_datatype_sizes_test(DT_FLOAT128,16,16);
nifti_datatype_sizes_test(DT_COMPLEX128,16,8);
nifti_datatype_sizes_test(DT_COMPLEX256,32,16);
{
mat44 R;
unsigned i,j;
for(i = 0; i < 4; i++)
for(j = 0; j < 4; j++)
R.m[i][j] = (i == j ? 1 : 0);
float qb;
float qc;
float qd;
float qx;
float qy;
float qz;
float dx;
float dy;
float dz;
float qfac;
nifti_mat44_to_quatern(R,&qb,&qc,&qd,&qx,&qy,&qz,&dx,&dy,&dz,&qfac);
PrintTest("nifti_mat44_to_quatern",
qb != 0.000000 || qc != 0.000000 || qd != 0.000000 ||
qx != 0.000000 || qy != 0.000000 || qd != 0.000000 ||
dx != 1.000000 || dy != 1.000000 || dz != 1.000000 ||
qfac != 1.000000,
NIFTITEST_FALSE,&Errors);
}
{
mat44 x = nifti_make_orthog_mat44(0.14,0.0,0.0,
0.0,0.9,0.0,
0.0,0.0,1.1);
PrintTest("nifti_make_orthog_mat44",
x.m[0][0] != 1.0 || x.m[1][1] != 1.0 ||
x.m[2][2] != 1.0 || x.m[3][3] != 1.0,
NIFTITEST_FALSE,&Errors);
}
{
static char x[16] = { 'a','b','c','d','e','f','g','h',
'H','G','F','E','D','C','B','A' };
nifti_swap_Nbytes(1,16,(void *)x);
PrintTest("nifti_swap_16bytes",
x[0] != 'A' || x[1] != 'B' || x[2] != 'C' || x[3] != 'D' ||
x[4] != 'E' || x[5] != 'F' || x[6] != 'G' || x[7] != 'H' ||
x[8] != 'h' || x[9] != 'g' || x[10] != 'f' || x[11] != 'e' ||
x[12] != 'd' || x[13] != 'c' || x[14] != 'b' || x[15] != 'a',
NIFTITEST_FALSE,&Errors);
}
{
static char x[8] = { 'a','b','c','d','D','C','B','A' };
nifti_swap_Nbytes(1,8,(void *)x);
PrintTest("nifti_swap_8bytes",
x[0] != 'A' || x[1] != 'B' || x[2] != 'C' || x[3] != 'D' ||
x[4] != 'd' || x[5] != 'c' || x[6] != 'b' || x[7] != 'a',
NIFTITEST_FALSE,&Errors);
}
{
/*
* test nifti_simple_init_nim
*/
nifti_image *nim = nifti_simple_init_nim();
PrintTest("nifti_simple_init_nim",
nim == 0,NIFTITEST_FALSE,&Errors);
nifti_image_free(nim); nim = 0;
/*
* test nifti_image_open
*/
znzFile f = nifti_image_open("ATestReferenceImageForReadingAndWriting.hdr","r",&nim);
PrintTest("nifti_image_open",
nim == 0 || f == 0,
NIFTITEST_FALSE,&Errors);
PrintTest("nifti_image_load",
nifti_image_load(nim) == -1,
NIFTITEST_FALSE,&Errors);
nifti_image_unload(nim);
PrintTest("nifti_image_unload",
nim->data != 0,
NIFTITEST_FALSE,&Errors);
znzclose(f);
nifti_image_free(nim);
}
/*
* call various functions from nifti_stats
*/
printf("\n\nTOTAL ERRORS=%d\n",Errors);
return Errors;
}
int main( int argc , char *argv[] )
{
nifti_image *nim ;
int iarg=1 , outmode=1 , ll ;
if( argc < 2 || strcmp(argv[1],"-help") == 0 ){
printf("Usage: nifti1_test [-n2|-n1|-na|-a2] infile [prefix]\n"
"\n"
" If prefix is given, then the options mean:\n"
" -a2 ==> write an ANALYZE 7.5 file pair: prefix.hdr/prefix.img\n"
" -n2 ==> write a NIFTI-1 file pair: prefix.hdr/prefix.img\n"
" -n1 ==> write a NIFTI-1 single file: prefix.nii\n"
" -na ==> write a NIFTI-1 ASCII+binary file: prefix.nia\n"
" The default is '-n1'.\n"
"\n"
" If prefix is not given, then the header info from infile\n"
" file is printed to stdout.\n"
"\n"
" Please note that the '.nia' format is NOT part of the\n"
" NIFTI-1 specification, but is provided mostly for ease\n"
" of visualization (e.g., you can edit a .nia file and\n"
" change some header fields, then rewrite it as .nii)\n"
) ;
printf("\nsizeof(nifti_1_header)=%u\n",(unsigned int)sizeof(nifti_1_header)) ;
exit(0) ;
}
if( argv[1][0] == '-' ){
if( argv[1][1] == 'a' ){
outmode = 0 ;
} else if( argv[1][1] == 'n' ){
switch( argv[1][2] ){
case '1': outmode = 1 ; break ;
default: outmode = 2 ; break ;
case 'a': outmode = 3 ; break ;
}
}
iarg++ ;
}
if( iarg >= argc ){
fprintf(stderr,"** ERROR: no input file on command line!?\n"); exit(1);
}
nim = nifti_image_read( argv[iarg++] , 1 ) ;
if( nim == NULL ) exit(1) ;
if( iarg >= argc ){ nifti_image_infodump(nim); exit(0); }
nim->nifti_type = outmode ;
if( nim->fname != NULL ) free(nim->fname) ;
if( nim->iname != NULL ) free(nim->iname) ;
ll = strlen(argv[iarg]) ;
nim->fname = (char *)calloc(1,ll+6) ; strcpy(nim->fname,argv[iarg]) ;
nim->iname = (char *)calloc(1,ll+6) ; strcpy(nim->iname,argv[iarg]) ;
if( nim->nifti_type == 1 ){
strcat(nim->fname,".nii") ;
strcat(nim->iname,".nii") ;
} else if ( nim->nifti_type == 3 ){
strcat(nim->fname,".nia") ;
strcat(nim->iname,".nia") ;
} else {
strcat(nim->fname,".hdr") ;
strcat(nim->iname,".img") ;
}
nifti_image_write( nim ) ;
exit(0) ;
}
