diff --git a/src/messages.c b/src/messages.c
--- a/src/messages.c
+++ b/src/messages.c
#include "fits2jpeg.h"
/*---------------------------------------------------------------------------*/
-void PRINT_BANNER()
+void banner()
{
printf("\n");
printf(" %s %s\n", PROGRAM, VERSION);
void usage()
{
printf ("\n Usage: fits2jpeg [options] <fits_file>\n");
- printf (" Options are: \n");
+ printf (" Name of fits image file <fits_file> is mandatory.\n");
+ printf (" Optional parameters are listed below: \n\n");
printf (" -h help \n");
+ printf (" Print this help message and exit \n\n");
printf (" -s <scale_type> \n");
printf (" scale for output image, where <scale_type> can be: \n");
printf (" linear Linear scale, default \n");
printf (" cubic for cubic scale \n");
printf (" log for log scale \n");
printf (" normalize for linear histogram stretch \n");
- printf (" equalize for histogram equalization \n");
+ printf (" equalize for histogram equalization \n\n");
+ printf (" -n \n");
+ printf (" Negate the image \n\n");
+ printf (" -q <value> \n");
+ printf (" quality factor. Defines the jpeg encoding quality \n");
+ printf (" Valid range: 0-100, default value: 100 (max.quality)\n\n");
+ printf (" -d <path/to/output/directory> \n");
+ printf (" Write jpeg file to this specified directory. Will \n");
+ printf (" create it if needed. Default is to write jpeg in the\n");
+ printf (" same directory as fits image file \n\n");
printf (" -r <min>:<max> \n");
printf (" Clip output image to min-max range. Eg: \n");
printf (" 0:100 Use only values in the range 0-100 \n");
printf (" 100:0 Same as above, but negative image \n");
printf (" :10 Clip everything above 10 \n");
- printf (" 10: Clip everything below 10 \n");
- printf (" -n \n");
- printf (" Negate the image \n");
- printf (" -q <value> \n");
- printf (" quality factor. Defines the jpeg encoding quality \n");
- printf (" Valid range: 0-100, default value: 100 (max.quality)\n");
+ printf (" 10: Clip everything below 10 \n\n");
printf (" -z <zoomfactor> \n");
printf (" Resize/Scale output image by <zoomfactor>. Eg: \n");
printf (" 0.5 Shrink output to half of input \n");
printf (" 2.0 Magnify output to double the size \n");
printf (" Allowed range: 0.01 to 4.0 \n");
printf (" NOTE: Zooming will be carried out after all other \n");
- printf (" operations, before writing out jpeg image \n");
+ printf (" operations, before writing out jpeg image \n\n");
printf (" Output will be written to <fits_file_root>.jpg. Wild card\n");
printf (" entries allowed in <fits_file>; For eg: *.fits, m31*.fits\n");
printf (" ngc???.fits etc. \n");