(Difference between revisions)
Latest revision as of 02:43, 14 September 2016
[edit] Synopsis
- ficombine [options] <input images> [-o|--output <output>]
[edit] Description
- The purpose of this program is to combine the input images (with the same sizes) to a single image. This combination refers to a kind of ``averaging for the images, however, other modes are also available.
[edit] Options:
[edit] General options:
- -h, --help
- Gives general summary about the command line options.
- --long-help
- Gives a detailed list of command line options.
- --version
- Gives some version information about the program.
- -o, --output <fits>
- The name of the output file (omitting or specifing '-' yields the output to be written to stdout).
- --data <spec>
- Output pixel data format specification.
- -b, --bitpix <bitpix>
- Standard FITS output bitpix value.
- -M, --input-mask <fits>
- Input mask file to co-add to output image.
[edit] Generic combination specification:
- -m, --mode <mode>
- Use the specified mode to combine images.
- -n, --ignore-negative
- Ignore (i.e. mask) pixels with negative values.
- --logical-or
- Use logical ``or combination between masks.
- --logical-and
- Use logical ``and combination between masks.
[edit] Combination modes (a comma-separated list of these should follow -m|--mode):
- average, mean
- The mean value of the pixels.
- median
- The median value of the pixels.
- min, minimum
- The minimum value of the pixels.
- max, maximum
- The maximum value of the pixels.
- rejmed, rejection
- Median value after rejecting outliers.
- rejavg
- Mean value after rejecting outliers.
- iterations=<n>
- Number of iterations to reject outliers.
- lower=<l>, upper=<u>, sigma=<s>
- Outlier limit (lower, upper, both) in stddev.
- sum
- Sum of the pixel values.
- squaresum
- Sum for the squarers of the pixel values.
- scatter, stddev
- Pixel scatter (standard deviation).
- or
- Use logical ``or combination between masks.
- and
- Use logical ``and combination between masks.
- ignorenegative
- Ignore (i.e. mask) pixels with negative values.
- ignorezero
- Ignore (i.e. mask) pixels with a zero value.
- ignorenegative
- Ignore (i.e. mask) pixels with positive values.