Plots the nominal central point of an area. This appears just like a normal marker plot, but can be used when the available geometry information is an area description (such as an STC-S string or an array of polygon vertices) rather than coordinate values such as an X,Y pair. The position plotted is the nominal center of the shape as determined by the plotting code; that may or may not correspond to the actual center.
layerN=central shapeN=filled_circle|open_circle|... sizeN=<pixels> shadingN=auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN> areaN=<area-expr> areatypeN=STC-S|POLYGON|CIRCLE|POINT|MOC-ASCII|UNIQ inN=<table> ifmtN=<in-format> istreamN=true|false icmdN=<cmds>
All the parameters listed here
affect only the relevant layer,
identified by the suffix
stilts plot2plane xmin=136.7 xmax=138.5 ymin=-5.7 ymax=-4.2 in=crism.fits icmd='select sensor_id==0x53' area=s_region areatype=STC-S layer1=area polymode1=fill shading1=density densemap1=heat layer2=central shape2=fat_circle size2=3 color2=black
areaN = <area-expr>(String)
The value is a Area value algebraic expression based on column names as described in Section 10.
areatypeN = STC-S|POLYGON|CIRCLE|POINT|MOC-ASCII|UNIQ(AreaMapper)
areaNis supplied. Options are:
STC-S: Region description using STC-S syntax; see TAP 1.0, section 6. Note there are some restrictions:
<flavor>metadata are ignored, polygon winding direction is ignored (small polygons are assumed) and the
NOTconstructions are not supported. The non-standard
MOCconstruction is supported.
POLYGON: 2n-element array (
NaNpair can be used to delimit distinct polygons.
CIRCLE: 3-element array (
POINT: 2-element array (
MOC-ASCII: Region description using ASCII MOC syntax; see MOC 1.1 2.3.2. Note there are currently a few issues with MOC plotting, especially for large pixels.
UNIQ: Region description representing a single HEALPix cell as defined by an UNIQ value, see MOC 1.1 sec 2.3.1.
icmdN = <cmds>(ProcessingStep)
inN. 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,
and lines which are blank or which start with a
#' character are ignored.
ifmtN = <in-format>(String)
inN. The known formats are listed in Section 5.1.1. This flag can be used if you know what format your table is in. If it has the special value
(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. This parameter is ignored for scheme-specified tables.
inN = <table>(StarTable)
-", meaning standard input. In this case the input format must be given explicitly using the
ifmtNparameter. Note that not all formats can be streamed in this way.
<" character at the start, or a "
|" character at the end ("
<syscmd" or "
syscmd|"). This executes the given pipeline and reads from its standard output. This will probably only work on unix-like systems.
istreamN = true|false(Boolean)
inNparameter will be read as a stream. It is necessary to give the
ifmtNparameter 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 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). This parameter is ignored for scheme-specified tables.
shadingN = auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN>(ShapeMode)
shapeN = filled_circle|open_circle|...(MarkerShape)
The available options are:
sizeN = <pixels>(Integer)