Draws a closed quadrilateral
given the coordinates of its vertices
supplied as 4 separate positions.
The way that the polygon is drawn (outline, fill etc)
is determined using the
Polygons smaller than a configurable threshold size in pixels are by default represented by a replacement marker, so the position of even a very small polygon is still visible on the screen.
layerN=poly4 polymodeN=outline|border|fill|cross|star thickN=<int-value> minsizeN=<pixels> minshapeN=filled_circle|open_circle|... shadingN=auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN> <pos-coord-params1N> <pos-coord-params2N> <pos-coord-params3N> <pos-coord-params4N> inN=<table> ifmtN=<in-format> istreamN=true|false icmdN=<cmds>
All the parameters listed here
affect only the relevant layer,
identified by the suffix
<pos-coord-params4N>give 4 positions for each row of the input table. Their form depends on the plot geometry, i.e. which plotting command is used. For a plane plot (
plot2plane) the parameters would be
y4N. The coordinate parameter values are in all cases strings interpreted as numeric expressions based on column names. These can be column names, fixed values or algebraic expressions as described in Section 10.
stilts plot2sky in=big_tab_VIR_VIS_CSA_public.fits icmd='every 32' lon1=LON_CORNER_1 lat1=LAT_CORNER_1 lon2=LON_CORNER_2 lat2=LAT_CORNER_2 lon3=LON_CORNER_3 lat3=LAT_CORNER_3 lon4=LON_CORNER_4 lat4=LAT_CORNER_4 aux=RADIUS layer_o=poly4 polymode_o=outline shading_o=aux layer_f=poly4 polymode_f=fill shading_f=aux opaque_f=4 auxmap=rainbow auxvisible=false xpix=300 ypix=300 labelpos=none
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.
minshapeN = filled_circle|open_circle|...(MarkerShape)
The available options are:
minsizeN = <pixels>(Integer)
polymodeN = outline|border|fill|cross|star(PolygonShape)
The available options are:
outline: draws a line round the outside of the polygon
border: draws a line butting up to the outside of the polygon; may look better for adjacent shapes, but more expensive to draw
fill: fills the interior of the polygon
cross: draws a line round the outside of the polygon and lines between all the vertices
star: draws a line round the outside of the polygon and lines from the nominal center to each vertex
shadingN = auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN>(ShapeMode)
thickN = <int-value>(Integer)