The usage of
stilts <stilts-flags> tcube cols=<col-id> ... ifmt=<in-format> istream=true|false icmd=<cmds> bounds=[<lo>]:[<hi>] ... binsizes=<size> ... nbins=<num> ... out=<out-file> otype=byte|short|int|long|float|double scale=<col-id> [in=]<table>If you don't have the
stiltsscript installed, write "
java -jar stilts.jar" instead of "
stilts" - see Section 3. The available
<stilts-flags>are listed in Section 2.1.
Parameter values are assigned on the command line as explained in Section 2.3. They are as follows:
binsizes = <size> ...
nbinsparameter must be supplied.
bounds = [<lo>]:[<hi>] ...
If any of the bounds need to be determined automatically in this way, two passes through the data will be required, the first to determine bounds and the second to populate the cube.
cols = <col-id> ...
<col-id>elements, separated by spaces, should be given. Each one represents a column in the table, using either its name or index.
The number of columns listed in the value of this parameter defines the dimensionality of the output data cube.
icmd = <cmds>
The value of this parameter is one or more of the filter commands described in Section 6.1. If more than one is given, they must be separated by semicolon characters (";"). This parameter can be repeated multiple times on the same command line to build up a list of processing steps. The sequence of commands given in this way defines the processing pipeline which is performed on the table.
Commands may alteratively be supplied in an external file,
by using the indirection character '@'.
Thus a value of "
causes the file
filename to be read for a list
of filter commands to execute. The commands in the file
may be separated by newline characters and/or semicolons.
ifmt = <in-format>
(auto)(the default), then an attempt will be made to detect the format of the table automatically. This cannot always be done correctly however, in which case the program will exit with an error explaining which formats were attempted.
in = <table>
istream = true|false
intable will be read as a stream. It is necessary to give the
ifmtparameter in this case. Depending on the required operations and processing mode, this may cause the read to fail (sometimes it is necessary to read the input table more than once). It is not normally necessary to set this flag; in most cases the data will be streamed automatically if that is the best thing to do. However it can sometimes result in less resource usage when processing large files in certain formats (such as VOTable).
nbins = <num> ...
binsizesparameter must be supplied.
otype = byte|short|int|long|float|double
out = <out-file>
The output cube is currently written as a single-HDU FITS file.
scale = <col-id>
null(the default) then for each row that falls within the bounds of a pixel, the pixel value will be incremented by 1. If a column ID is given, then instead of 1 being added, the value of that column for the row in question is added. The effect of this is that the output image contains the mean of the given column for the rows corresponding to each pixel rather than just a count of them.