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| Joint Astronomy Centre |
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Commands overviewData reduction commands used in this Cookbook (and in CSH scrips referred to in the Cookbook).hdstrace - shows the data structure of an NDF
Kappaadd - adds data pixel-by-pixelblock - smooths data with 1-dim or 2-dim box filter chanmap - creates channel map by compressing data along one axis chpix - replaces the values of selected pixels clinplot - draws a spatial grid of line plots for one axis of an NDF collapse - reduces the number of axes by compression along one axis compave - reduces size of an NDF by averaging values in rectangular boxes copybad - copies bad pixels from one NDF to another cursor - reports the coordinates of positions selected with cursor display - displays a 1-dim or 2-dim NDF ffclean - removes defects from a flat NDF (1 to 3-dim) fitslist - lists the fits extension of an NDF flip - reverses the pixels of an NDF along one axis gausmooth - smooths an NDF using a Gaussian filter hislist - lists history records of an NDF histat - computes statistics for pixels of an NDF using a histogram kaphelp - shows information about Kappa linplot - draws a line plot along one dimension of an NDF listshow - reports the positions stored in a positions list lutcol - loads the standard colour lookup table manic - changes the dimensionality of (part of) an NDF maths - evaluates mathematical expressions applied to NDFs mfittrend - fits independent trends (baselines) to data lines ndfcopy - copies (part of) NDF to new NDF ndftrace - shows the attributes of an NDF structure parget - obtains the value(s) of an application parameter provshow - displays provenance information for an NDF rotate - rotates an NDF about its centre through any angle setaxis - sets values for an axis array component within an NDF sqorst - squashes or stretches an NDF stats - computes simple statistics for the pixels of an NDF sub - subtraces one NDF from another thresh - edits an NDF to replace pixel values in(out)side limits with a constant value wcsalign - aligns a group of NDFs using WCS information wcsattrib - manages attribute values associated with WCS information of an NDF wcsframe - changes the current coordinate frame of the WCS information of an NDF wcsmosaic - tiles a group of NDFs using WCS information
Cupidcupidhelp - shows information about Cupidfindback - estimates background in NDF by removing small-scale structure
Smurfmakecube - regrids ACSIS spectra into a data cubesmurfhelp - shows information about Smurf
Convertconhelp - shows information about Convertndf2fits - converts NDF into FITS file
Hdstoolshcreate - create an HDS data object of specified type and dimensionshhelp - shows information about Hdstools hmodify - modify the value of an HDS object AbbreviationsHDS - Hierarchical Data SystemNDF - Extensible N-Dimensional Data Format SDF - Starlink Data Format |