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Name

ccdmoms - moment along a set of images

Synopsis

ccdmoms [parameter=value]

Description

ccdmoms acts somewhat similar to ccdmom(1NEMO) with a fourth axis, which runs over the input files. One can sum, taken the mean, dispersion etc. along this set of images. Weights can also be given for each image, either as a scalar, or as a map.

Parameters

The following parameters are recognized in any order if the keyword is also given:
in=
Input image files, in image(5NEMO) format, separated by comma’s. No default.
out=
Output image file. No default.
mom=
Moment to take (0=sum,1=mean,2=disp,-1=median) Default: -1 (mean value)
weight=
Scalar weights, one per image. By default all the same. The RMS per image can also be given, in which case sigma=t (see below) needs to be set.
axis=
WCS axis values of the images in case the mom= requires this. By default they are assigned 0,1,2,.... (not implemented yet)
win=
Optional input image weights, one per input file (not implemented yet)
sigma=t|f
Are the weights still SIGMA (t), or straight weights (f) [f]

Examples

Taking an average of N images:
   ccdmoms  in=im1,im2,im3,im4  out=imm  mom=1

See Also

ccdmom(1NEMO) , ccdmath(1NEMO) , image(5NEMO)

Files

NEMO/src/image/misc/ccdmoms.c

Author

Peter Teuben

Update History


15-Dec-20    V0.1 Drafted    PJT


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