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Parameter File Description
infile (string): name of the input file containing particle data (in case of parallel reading and/or interpolation this is only a partial name)
simtype (integer): type of the data reader to be used
0: tabular binary file
1: block binary file
2: Gadget2 binary
3: Enzo
4: Gadget Millenium
5: plain binary file MPI2
6: Mesh
7: HDF5
8: Gadget HDF5
10: Visivo
11: Tipsy
13: Ramses
if (simtype==2 or simtype==4) i.e. only for Gadget files
interpolation_mode (integer, default=0): Only relevant for animations
0: no interpolation between files
1: linear interpolation
2: higher order interpolation
ptypes (integer, default=1): number of different particle types
numfiles (integer, default=1): number of files containing one data set
readparallel (integer, default=1): number of tasks reading the input data set. numfiles must be a multiple of readparallel
if (interpolation_mode>0)
id_label (string): label for the block containing the particle IDs
endif
ptype (integer, n=[0..ptypes-1]): Gadget type of the nth kind of particles to render
size_fix (float, n=[0..ptypes-1], default=0): if >0, use this value as radius for particles of kind n
if (size_fix == 0)
size_label (string): name of the quantity to use for particle size (HSML is a good choice)
size_present (integer): bit-coded 2^ptype for which types this block contains data
endif
size_fac (float, default=1): factor applied to particle sizes
color_is_vector (bool, default=false): indicates if color is a vector or a scalar quantity
color_label (string, default="XXXX"): label for block that contains particle color
color_present (integer): bit-coded 2^ptype for which types this block contains data
color_fac (float, default=1): factor to multiply color with
intensity_label = (string, default="XXXX"): label for block that contains particle intensity
intensity_present (integer): bit-coded 2^ptype for which types this block contains data
endif
swap_endian (bool, defaul=false): if true, values read from binary input files are byte-swapped directly after reading
if (simtype==0,1,5) (i.e. only for binary files)
num_columns (integer): number of columns (case simtype = 0, i.e. tabular)
num_blocks (integer): number of blocks (case simtype = 0/5, i.e. blocks)
number of column/block containing the following particle property: (-1 means that this property is missing in the input file or it is not to be read)
x (integer): index of the x-coordinate
y (integer): index of the y-coordinate
z (integer): index of the z-coordinate
r (integer): index of the smoothing length
I (integer): index of the intensity
if color_is_vector, the following properties correspond to RGB color of the particle
C1 (integer): index of the R component
C2 (integer): index of the G component
C3 (integer): index of the B component
else
C1 (integer): index of the quantity to use in a color lookup table
endif
minrad_pix (float, default=1): minimum radius (in pixels) that a particle can have; smaller particles are automatically enlarged
projection (bool, default=true): enables perspective projection
geometry_file (string, default=" "): name of the geometry file, if any
if (geometry_file!=" ")
geometry_start (integer, default=0): first line in the geometry file that should be used
geometry_incr (integer, default=1): distance of two consecutive lines to be used
else
camera_{xyz} (double): X/Y/Z-coordinate of the camera
lookat_{xyz} (double): X/Y/Z-coordinate of the look-at point
sky_{xyz} (double): X/Y/Z-coordinate of the sky vector
endif
fov (double, default=45): horizontal field of view in degrees
EyeSeparation (double, default=0): horizontal eye separation in degrees. If set, turns on stereo mode
define z-coordinate range of particles to be visualized
zmin (double, default=0): near cutoff distance
zmax (double, default=1e23): far cutoff distance
a_eq_e (bool, default=true): condition A = E in the radiative transfer equation
sort_type (integer, default=0): sorting only makes a difference if a_eq_t==false
0: nosort
1: by z
2: by value
3: by reversed value
4: by size
visualization properties for particles of type :
color_log (bool, default=true): if true, apply the log10() function to the physical quantity associated to the color
color_asinh (bool, default=false): apply hyperbolic arcsine function to the physical quantity associated to the color
color_min (float, optional): if provided, use this as lower limit for the color values (after application of logarithm and/or asinh)
color_max (float, optional): if provided, use this as upper limit for the color values (after application of logarithm and/or asinh)
intensity_log (bool, default=true): if true, apply the log10 function to the intensity value
intensity_min (float, optional): if provided, use this as lower limit for the intensity values (after application of the logarithm)
intensity_max (float, optional): if provided, use this as upper limit for the intensity values (after application of the logarithm)
brightness (float, default=1): multiplicative factor of the intensity
palette (string): name of the file containing the colormap only used if color_is_vector == false
pictype (integer, default=0): format of the output image
0 = TGA (uncompressed)
1 = ASCII PPM (very large)
2 = binary PPM
3 = TGA (run length encoded)
outfile (string): output file name (partial name if multiple outputs are written)
colorbar (bool, default=false): if true, add a colorbar
xres (integer, default=800): number of image pixels in x direction
yres (integer, default=xres): number of image pixels in y direction
boost (bool, default=false) enable booster: random subsample of the dataset
gpu_info (bool, default=true) if true, print detailed information about GPUs
particle_mem_factor (integer, default=3) factor applied to particle sizes to allocate global memory
Rendering tile scheme parameters
tile_boundary_width (integer, default=8) width of the boundary around the image tile
tile_x-side (integer, default=8)
tile_y-side (int, default=tile_x_side) x and y side dimension of the image tile, in terms of pixels