SPLASH:(1)

User Commands

SPLASH:(1)

NAME¶

SYNOPSIS¶

splash file1 file2 file3...

DESCRIPTION¶

Usage with flags: splash [-p fileprefix] [-d defaultsfile] [-l limitsfile] [-ev] [-lowmem] [-o format] [-x col] [-y col] [-render col] [-cont col] file1 file2 ...

Command line options:

-p fileprefix: : change prefix to ALL settings files read/written by splash
-d defaultsfile: : change name of defaults file read/written by splash
-l limitsfile: : change name of limits file read/written by splash
-e, -ev: : use default options best suited for line plotting (.ev files)
-360: : set default options suited to 360 video
-lm, -lowmem: : use low memory mode [applies only to sphNG data read at present]
-o pixformat: : dump pixel map in specified format (use just -o for list of formats)

Command line plotting mode:

-x column: : specify x plot on command line (ie. do not prompt for x)
-y column: : specify y plot on command line (ie. do not prompt for y)
-r[ender] column: : specify rendered quantity on command line (ie. no render prompt) (will take columns 1 and 2 as x and y if -x and/or -y not specified)
-vec[tor] column: : specify vector plot quantity on command line (ie. no vector prompt)

-c[ontour] column : specify contoured quantity on command line (ie. no contour prompt)

-dev device: : specify plotting device on command line (ie. do not prompt)

: convert mode ("splash to X dumpfiles"): splash to ascii : convert SPH data to ascii file dumpfile.ascii

to binary: : convert SPH data to simple unformatted binary dumpfile.binary:
write(1) time,np,ncols: do i=1,np
write(1) dat(1:ncols),itype: enddo
to stream: : convert SPH data to streamed binary format dumpfile.binarystream:

: t,np,ncols,np*(dat(1:ncols),itype) [4,4,4,np*(ncols*4,4)] bytes
: to phantom : convert SPH data to binary dump file for PHANTOM to gadget : convert SPH data to default GADGET snapshot file format
: Grid conversion mode ("splash to X dumpfiles"):

splash to grid: : interpolate basic SPH data (density, plus velocity if present in data)

: to 2D or 3D grid, write grid data to file (using default output=ascii)

to gridascii: : as above, grid data written in ascii format
to gridascii2: : grid data written in ascii format, all in one file
to gridbinary: : as above, grid data in simple unformatted binary format:
write(unit) nx,ny,nz,ncolumns,time,xmin,xmax,ymin,ymax,zmin,zmax [ 4x4,7x8 bytes ]: write(unit) (((rho(i,j,k),i=1,nx),j=1,ny),k=1,nz) [ 8 bytes each ] write(unit) (((vx(i,j,k), i=1,nx),j=1,ny),k=1,nz) [ 8 bytes each ] write(unit) (((vy(i,j,k), i=1,nx),j=1,ny),k=1,nz) [ 8 bytes each ] write(unit) (((...(i,j,k),i=1,nx),j=1,ny),k=1,nz) [ 8 bytes each ]
to gridstream: : grid data in byte-stream binary format (e.g. for python):

: nx,ny,nz,ncolumns,time,xmin,xmax,ymin,ymax,zmin,zmax,rho [ 4,4,4,4,8*7,8*nx*ny*nz ]

allto grid: : as above, interpolating *all* columns to the grid (and output file)
allto gridascii: : as above, with ascii output
allto gridbinary: : as above, with binary output

: Analysis mode ("splash calc X dumpfiles") on a sequence of dump files:

splash calc energies: : calculate KE,PE,total energy vs time

: output to file called 'energy.out'

calc massaboverho : mass above a series of density thresholds vs time: output to file called 'massaboverho.out'
calc max: : maximum of each column vs. time

: output to file called 'maxvals.out'

calc min: : minimum of each column vs. time

: output to file called 'minvals.out'

calc diff: : (max - min) of each column vs. time

: output to file called 'diffvals.out'

calc amp: : 0.5*(max - min) of each column vs. time

: output to file called 'ampvals.out'

calc delta: : 0.5*(max - min)/mean of each column vs. time

: output to file called 'deltavals.out'

calc mean: : mean of each column vs. time

: output to file called 'meanvals.out'

calc rms: : (mass weighted) root mean square of each column vs. time

: output to file called 'rmsvals.out'

calc tracks: : track particle data vs time for selected* particle,

: output to file called 'tracks.out'
: ( * select "xy limits relative to particle" in l)imits menu", or
: press "t" in interactive mode, and save settings to splash.defaults )
: the above options all produce a small ascii file with one row per input file. the following option produces a file equivalent in size to one input file (in ascii format):

calc timeaverage: : time average of *all* entries for every particle

: output to file called 'time_average.out'

calc ratio: : ratio of *all* entries in each file compared to first

: output to file called 'ratio.out'
: Basic splash usage is explained in the userguide,
: located in the directory splash/docs/splash.pdf

v2.10.1 [24th June 2020]

Usage: splash file1 file2 file3...