xyellipse
Plots an ellipse (or rectangle, triangle, or other similar figure) defined by two principal radii and an optional rotation angle.
Usage Overview:
layerN=xyellipse ellipseN=ellipse|crosshair_ellipse|... scaleN=<factor> autoscaleN=true|false shadingN=auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN> xN=<num-expr> yN=<num-expr> raN=<num-expr> rbN=<num-expr> posangN=<deg-expr> inN=<table> ifmtN=<in-format> istreamN=true|false icmdN=<cmds>
All the parameters listed here
affect only the relevant layer,
identified by the suffix
N
.
Example:
stilts plot2plane in=mgc_ok.fits x=mgc_alpha_j2000 y=mgc_delta_j2000 ra=bulge_re/3600. rb=bulge_re*bulge_e/3600. posang=bulge_pa autoscale=false scale=10 color=blue layer1=xyellipse ellipse1=filled_ellipse shading1=transparent opaque1=4 layer2=xyellipse ellipse2=crosshair_ellipse aspect=1 xmin=181.3 xmax=181.9
autoscaleN = true|false
??????(Boolean)
If auto-scaling is on, then markers will keep approximately the same screen size during zoom operations; if it's off, they will keep the same size in data coordinates.
Marker size is also affected by the
scale
parameter.
[Default: true
]
ellipseN = ellipse|crosshair_ellipse|...
??????(ErrorRenderer)
The available options are:
ellipse
crosshair_ellipse
filled_ellipse
rectangle
crosshair_rectangle
filled_rectangle
open_triangle
filled_triangle
lines
capped_lines
arrows
[Default: ellipse
]
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 "@filename
"
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.
ifmtN = <in-format>
??????(String)
inN
.
The known formats are listed in Section 5.2.1.
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.
[Default: (auto)
]
inN = <table>
??????(StarTable)
-
",
meaning standard input.
In this case the input format must be given explicitly
using the ifmtN
parameter.
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)
inN
parameter
will be read as a stream.
It is necessary to give the
ifmtN
parameter
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).
[Default: false
]
posangN = <deg-expr>
??????(String)
The value is a numeric algebraic expression based on column names as described in Section 10.
raN = <num-expr>
??????(String)
The value is a numeric algebraic expression based on column names as described in Section 10.
rbN = <num-expr>
??????(String)
The value is a numeric algebraic expression based on column names as described in Section 10.
scaleN = <factor>
??????(Double)
[Default: 1
]
shadingN = auto|flat|translucent|transparent|density|aux|weighted <shade-paramsN>
??????(ShapeMode)
[Default: auto
]
xN = <num-expr>
??????(String)
The value is a numeric algebraic expression based on column names as described in Section 10.
yN = <num-expr>
??????(String)
The value is a numeric algebraic expression based on column names as described in Section 10.