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Visualisation of SPH data using SPLASH - v1.12.2
Daniel Price
- Contents
- Introduction
- Getting started
- Basic SPLASH usage
- Simple two column plot
- Rendered plots
- Cross section slice
- Vector plots
- Contour plots
- Moving forwards and backwards through data files
- Zooming in and out / changing plot limits
- Producing a postscript figure for a paper
- Producing a sequence of plots for a movie
- Ten quick hints for producing good-looking plots
- Changing plot settings
- set (m)ultiplot
- (d)ata options
- Re-reading the initial data / changing the dump file
- Using only a subset of data files / plotting every
th dump file
- Plotting a subset of data files in non-sequential order
- Plotting more than one file without re-reading the data from disk
- Calculating additional quantities not dumped
- Plotting data in physical units
- Rescaling data columns
- Changing the default column labels
- Plotting column density in g/cm
without having x,y,z in cm
- Changing physical unit settings
- Changing the axis label to something like
![$ [ \times 10^{4} ]$](img4.gif)
- Changing the time units
- (i)nteractive mode
- Adapting the plot limits
- Making the axes logarithmic
- Colouring a subset of the particles and retaining this colour through other timesteps
- Working out which particles formed a particular object in a simulation
- Plotting only a subset of the particles
- Rendering using only a subset of the particles
- Tracking a set of particles through multiple timesteps
- Taking an oblique cross section interactively
- (p)age options
- Overlaying timesteps/multiple dump files on top of each other
- Plotting results from multiple files in the same panel
- Plotting more than one dump file on the same page
- Changing axes settings
- Turning axes off
- Turning axes labels off
- Using logarithmic axes labels
- Changing the size of the plotting surface
- Dividing the plotting page into panels
- Tiling plots with the same
and 
axes
- Using non-proportional scales for spatial dimensions
- Using non-square axes on coordinate plots
- Changing the character height for axes, labels and legends
- Using a thicker line width on plots
- Changing the foreground and background colours
- Plotting axes, legends and titles in white even when the labels are plotted in black
- le(g)end and title options
- Adding titles to plots / repositioning titles
- Turning off/moving the time legend
- Changing the text in the time legend
- Making the legend read ``z='' instead of ``t=''
- Plotting the time legend on the first row/column of panels / nth panel only
- Plotting a length scale on coordinate plots
- Annotating a plot with squares, rectangles, arrows, circles and text
- particle plot (o)ptions
- Plotting non-gas particles (e.g. ghosts, boundary, sink particles)
- Plotting non-gas particles on top of rendered plots
- Using ghost particles in the rendering
- Turn off plotting of gas particles
- Plotting dark matter particles
- Plotting a column density plot of dark matter/N-body particles
- Plotting sink particles
- Plotting sink particles with size proportional to the sink radius
- Plotting a point mass particle with physical size
- Changing graph markers for each particle type
- Plotting each particle type in a different colour
- Changing the order in which different particle types are plotted
- Plotting using lines instead of dots (e.g. for energy vs time plots)
- Plotting multiple lines with different colours/line styles and a legend
- Joining the dots
- Plotting the size of the smoothing circle around selected particles
- Locating a particular particle in the data set
- Making sure absolutely all particles are plotted
- Plotting in different coordinate systems (e.g. cylindrical coordinates)
- Plotting vector components in different coordinate systems
- Plotting orbital velocities
- Plotting against azimuthal angle/cylindrical radius/etc
- Plotting the exact solution to common test problems
- Plotting an exact solution from a file
- Changing the exact solution line style & colour
- Setting the number of points used in an exact solution calculation
- Plotting an inset plot of residual errors from an exact solution
- plot (l)imits
- Using plot limits which adapt automatically for each new plot
- Using adaptive plot limits for the colour bar but not for the coordinates
- Setting plot limits manually
- Making plot limits relative to a particular particle
- Plotting in a comoving reference frame
- Setting the origin to correspond to a particular particle
- Scaling plot limits by a fixed amount
- Plotting with log axes.
- Plotting the square root, inverse or square of a quantity
- Resetting limits for all columns
- Restoring all plot limits to their minimum and maximum values in the current dump file
- Using a subset of data restricted by parameter range
- Plotting only particles with
, 
and
- (r)endering options
- Changing the number of pixels in a rendered image
- Changing the colour scheme
- Plotting contours as well as the rendered image
- Plotting contours instead of a rendered image
- Changing the number of contour levels
- Adding numeric labels to contours
- Turning the colour bar off/ moving the colour bar label
- Changing the style of the colour bar
- Using a horizontal colour bar
- Using `plot-hugging' colour bars
- Plotting ticks on only one side of the colour bar
- Changing the text in the colour bar label
- Using coloured particles instead of rendering to pixels
- Using normalised interpolations
- Speeding up the rendering on 3D column integrated plots
- Using density weighted interpolation
- Selecting and rendering only a subset of the particles
- Changing the label used for 3D projection plots
- Changing ``column density'' to ``surface density'' on 3D plots
- (v)ector plot options
- Changing the number of arrows on vector plots
- Changing the number of pixels in vector plots
- Changing the size of arrows on vector plots
- Plotting vector arrows in white instead of black or vice-versa
- Turning off the legend for vector plots
- Moving the vector plot legend
- Plotting stream/fieldlines instead of arrows
- Turning arrow heads off for vector plots
- Hiding vector arrows where there are no SPH particles
- Plotting a vector plot in a cross section slice
- Making all arrow the same length (i.e., showing direction only, not magnitude)
- (x) cross section/3D plotting options
- Plotting a cross section slice through 3D data
- Plotting a cross section line through 2D data
- Rotating the particles
- Setting the origin about which particles are rotated
- Adding 3D perspective
- Using 3D surface rendering
- Plotting 3D box / 3D axes
- Setting up animation sequences
- Plotting a sequence of frames rotating a data set through 360 degrees
- Plotting a `fly-around' of 3D data
- Plotting a flythru of 3D data
- Adding a steady zoom sequence to a movie
- Adding a steady change of colour bar limits
- Adding steady movement of the 3D observer
- Miscellaneous other useful things
- Advanced plotting examples
- Rendered plot of star formation data
- Multi-panelled figure
- Surface rendering
- Using asplash to plot energy vs time plots
- Powerspectrum of 1D data
- Plotting azimuthally-averaged disc surface density and Toomre Q parameter
- Other useful information
- Converting binary dump files to ascii using SPLASH
- Using SPLASH to calculate global quantities as a function of time.
- Fixing the PGPLOT file naming system
- Reading/processing data into images without having to answer prompts
- Making frames across multiple processors
- What about boundaries? How does the rendering work near a boundary?
- How does SPLASH handle multiple particle types?
- Using special characters in the plot labels
- Making movies
- Outputting the raw pixel map to a file
- User contributions / Wishlist for future improvements
- Acknowledgements
- Source code overview
- Coordinate transformation details
- Exact solution details
- Errors
- Shock tubes (Riemann problem)
- Polytrope
- Linear wave
- Sedov blast wave
- Toy stars
- MHD shock tubes
- h vs
- Writing your own read_data subroutine
- Bibliography
- About this document ...
Daniel Price 2009-07-15