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snaps2plot - display an N-body snapshot file in a s2plot display
snaps2plot
insnap-file [parametervalue] ...
snaps2plot plots a sequence of
frames from a N-body snapshot file on a s2plot display device,
This program
is derived from snapplot3(1NEMO)
and therefore shares many of its keywords.
The following parameters are recognized; they may be given in
any order.
- insnap-file
- Input data is read from snap-file, which must be in
snapshot format.
- timestime-range
- Only plot frames with time values within
time-range, which is of the form, eg, "1.0:1.5,2.5,3.0". The default is "all".
- xvarx-expression
- The value of x-expression is plotted along the X axis. x-expression
is a real-valued C language expression over the real values x, y, z, vx,
vy, vz, phi, t, and the integer value i. The default is x.
- xlabelx-axis-label
- Label for the X axis. The default is the expression given for xvar.
- xrangex-axis-range
- Range of values for the X axis, specified either as a single number (in
which case the lower bound is zero) or a pair of numbers separated by a
colon. The default range is -2.0:2.0.
- yvary-expression
- See above. The default
is y.
- ylabely-axis-label
- yrangey-axis-range
- zvarz-expression
- See above. The default
is z.
- zlabelz-axis-label
- zrangez-axis-range
- visibexpression
- Determines the visibility
of particles. expression is a integer expression in the above variables;
only points with non-zero values are plotted. Particles are plotted in order
of their visib, e.g. visib=1 are plotted before visib=2, thus this keyword
can be used to re-arrange the plotting order on screen (useful if colors
are used). The default is 1.
- psizeexpression
- Determines the point type and
size. expression is a real expression in the above variables; zero means
plot a point, positive (negative) means plot a circle (cross) with size
controled by absolute value. The default is 0.
- colorexpression
- Determines
the point color. expression is a real expression in the above variables;
values between 0 and 1 produce a sequence of saturated colors starting
with red, running through the spectrum, and wrapping back to red. The default
is 0.
- crangecolor-range
- Range of colors that should be mapped. Below and above
these ranges the yapp(3NEMO)
plotting layer may determine the visibility
of the points. The default range is 0:1.
- s2boxcolor-range
- S2PLOT style for
the X, Y and Z axes. Default: BCDETMNOQ
snapplot3(1NEMO)
, snapplot(1NEMO)
,
bodytrans(1NEMO)
, snapshot(5NEMO)
, s2splot(5NEMO)
http://astronomy.swin.edu.au/s2plot/
s2plot needs a number of environment variables during
install, and optionally during running. The most common ones are S2PATH
and S2ARCH for building, and S2PLOT_DEV for selecting the default plotting
device. If you don’t use s2plot for yapp, more than likely the $YAPP will
be conflicting with a valid name for S2PLOT_DEV. use yapp=/? to get a valid
list of s2plot device names, possibly yapp=/S2MONO.
Version 0.1 was
a quick hack on valentines evening. It only plots the selected snapshot,
it cannot yet page to the next one. Colors not implemented. Layers (visib=)
are using s2plot’s symbols (1,2,...). No tickmark implementation either.
Peter
Teuben
14-feb-2011 V0.1 - initial version written PJT
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