Modified Commands

The following applications have been modified:

CHANMAP

• There are new estimators for clipped mean and clipped standard deviation and associated new CLIP parameter for controlling the clip level.

CLINPLOT

• New MODE and MARKER parameters permit different ways to show the loci of data values including the histogram `staircase', dots or markers at each point, and lines connecting data points (the only available mode previously).
• New SPECAXES parameter can be used to suppress the drawing of axes around each spectrum.
• New ALIGN parameter controls whether to align the spectra spatially with an existing picture.

COLCOMP

• Parameter BADCOL has the additional option of an HTML colour code.

COLLAPSE

• There are new estimators for clipped mean and clipped standard deviation and associated new CLIP parameter for controlling the clip level.
• There is an improved WLIM-related WARNING message. The calculations used to decide whether or not to issue a warning and the reported fractions of bad values therein have been corrected. These fractions had been in terms of elements along the collapse axis, not the number of elements in the output NDF.

CONVOLVE

• No longer aborts if a slice within a cube contains no good data.

DISPLAY

• Parameter BADCOL has the additional option of an HTML colour code.

FITSMOD

• Parameter EDIT has a new option "Null". This will nullify the value of the chosen keyword, by substituting spaces for its value.

• Likewise there is an Null option for Field 1 of the file format.

HISCOM

• A new parameter called DATE has been added. This allows the date and time of the new history record to be set explicitly rather than to the default current time. There is a choice of formats including Gregorian Date and Time, and Julian Date.

LISTMAKE

• The FRAME parameter now allows the co-ordinate frame to be specified in more ways (for example, as an AST Object dump or the current Frame in an NDF).

LISTSHOW

• A new option ``STCS'' has been added to the PLOT parameter. This marks each position by drawing the shape giving in the column specified by new parameter STCSCOL. The shape is specified using the IVOA "STC-S" format.

LOOK

• A new option ``WLIST'' has been added to the FORMAT parameter. This produces a list in which each row contains the WCS co-ordinates of a pixel follwoed by the pixel value.

MSTATS

• There are new estimators for clipped mean and clipped standard deviation and associated new CLIP parameter for controlling the clip level.

NDFCOPY

• A new parameter caller EXTEN has been added. This can be set TRUE to cause any extension NDFs contained within the supplied NDF to be modified to match the shape of the output NDF.

• A new parameter caller LIKEWCS has been added. This allows the shape of the template NDF in the WCS Frame to be used to determine the bounds of the output NDF.

• A new logical parameter caller TRIMBAD has been added. This allows the output NDF to be trimmed to exclude any border of bad pixels.

PROVREM

• Has a new parameter called HIDE that can be set to TRUE to hide the selected ancestors rather than permanently deleting them. Hidden ancestors in an NDF PROVENANCE extension will in general be ignored by subsequent applications, but all the provenance information for hidden ancestors is retained unchanged in the PROVENANCE extension.

PROVSHOW

• Has a new parameter called HISTORY that can be set to TRUE to display any history records stored in the provenance extension of each ancestor NDF.

• Has a new parameter called HIDE that can be set to TRUE to include ``hidden'' ancestors in the display. Ancestors can be hidden using PROVREM.

ROTATE

• Efficiency improvements have been made for rotations of 180 degrees and arbitrary angles that should greatly reduce the memory requirements for processing cubes. Additional efficiencies have be made for the 0-degree rotation special case.

STATS

• Can calculate accurate median and percentile values using sorting by setting the new ORDER parameter to TRUE, and optionally supplying percentiles through the new PERCENTILES parameter. There are corresponding results parameters--MEDIAN and PERVAL--to record these additional statistics.

THRESH

• New result parameters NUMHI, NUMLO, NUMRANGE, and NUMSAME return the number of changed and unchanged pixels.