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| ### packages in directory i0
|  | compiled or interpreted packages present on startup
drat | Yorick interface definitions for Drat transport equation solver.
fft | Yorick interface to Swarztrauber FFT routines, modified for strides.
graph | Declarations of Yorick graphics functions.
hex | Yorick interface definitions for hex transport equation solver.
matrix | Yorick interface to LAPACK matrix solving routines.
paths | When Yorick starts, it must be able to find several standard include files which initialize the interpreter. The default paths to these files are established when Yorick is compiled (see the Maketmpl and Makefile files in the Yorick distribution). However, if the Yorick binary is moved to a new site, the absolute path names of these required i0 files may change. By editing this file and placing it in the same directory as the Yorick executable file, you can adjust for such path name changes, which makes it possible to port Yorick binaries.
std | Declarations of standard Yorick functions. The Codger automatic code generator program uses this file to generate appropriate C code to initialize the various built-in functions declared here. This file is also used as online documentation for these functions by Yorick's help mechanism.

| ### packages in directory i
|  | yorick interpreted packages not loaded by default to use them, #include "package.i"
basfix | fix PDB binary file interface for use with Basis interpreter
bessel | integer order Bessel functions Functions: bessj, bessy, bessi, bessk
bowtie | detect and map bowties in 2D mesh Functions: bowtie, nbow
button | implement mouse pushbuttons in a Yorick graphics window (see rezone.i for usage examples) Functions: Button, button_plot, button_test, button_build
cheby | Chebyshev polynomial approximation Functions: cheby_fit, cheby_eval, cheby_integ, cheby_deriv
color | palette adjustment, HSV<->RGB transforms (study split_palette, split_bytscl in slice3.i for more color table ideas) Functions: brighten, to_hsv, to_rgb, dump_palette
convol | convolution using fft Functions: convol, fft_good
copyb | copy a binary file Function: copyb
dawson | Dawson's integral and error functions Functions: dawson, erf, erfc
demo1 | a simple 1-D hydro code Functions: demo1, evolve (read the file for more)
demo2 | fancy movies of a drumhead oscillating (solves 2D wave equation on the fly) Functions: demo2
demo3 | movie of a chaotic pendulum (way cool) (does Runge-Kutta integration of Lagrangian on the fly) Functions: demo3
demo4 | movie of flow around an airfoil (solves for flow field on the fly) Functions: demo4
demo5 | interpreted 3-D graphics, demonstrating plwf, slice3 Function: demo5
digit2 | 2D equivalents for digitize and interp Functions: digit2, interp2
ellipse | complete elliptic integrals Functions: EllipticE, EllipticK
elliptic | more elliptic functions Functions: elliptic, ell_am, ell_f, ell_e, dn_, ellip_k, ellip_e
filter | analog signal processing Functions: filter, fil_bessel, fil_butter, fil_cheby1, fil_cheby2, fil_cauer, etc
fitlsq | least squares fit a piecewise linear function to data Function: fitlsq
fitrat | rational function and polynomial fits Functions: fitrat, fitpol
fits | read and write FITS files (IAU astronomical data) Functions: fitsRead, fitsWrite, etc
gamma | gamma function and relatives Functions: ln_gamma, beta, bico (binomial coefficients), erfc
gcd | GCD, LCM, prime factorization Functions: gcd, lcm, is_prime, factorize
hydra | access hydra-generated Silo-PDB files
kepler | solar system models Functions: kepler, kepler2, moon, solar_system
legndr | Legendre polynomials, associated Legendre functions Function: legndr
make | automatic Makefile generator for custom version of Yorick Function: make
mkdoc | extract and alphabetize DOCUMENT comments from include files Function: mkdoc
movie | assistance for animation (see demo2.i and demo3.i) Functions: movie, movie_stats
msort | multiple key sorting functions Functions: msort, msort_rank
multi | multiple file extension to drat package
netcdf | read and write netcdf binary files Functions: nc_open, nc_create, nc_vardef, nc_enddef, nc_addrec (if you only need to read a netcdf file, just use openb -- netcdf.i will be included automatically)
pixels | crude attempt to force Yorick to plot cell arrays at one cell per X window pixel Functions: pixels, pix_window
pl3d | first cut at 3-D graphics command line interface, defines common lighting, rotation and perspective transforms, gnomon (axis orientation indicator) plwf.i, slice3.i, and demo5.i contain usage examples Functions: rot3, light3, aim3, draw3, gnomon, etc
plato | regular Platonic solids Functions: plato, pt_tet, pt_cube, pt_oct, pt_dodec, pt_ico, bucky
plclab | label contour levels with numeric values Function: plc_label
plwf | 3-D wire frame plots (painter's algorithm) Function: plwf
pnm | read and write PBM, PGM, and PBM files made by the pbmplus or netpbm packages Functions: pnm_read, pnm_write, etc
prefix | read lists of numbers tagged by a "prefix" at the beginning of each line Functions: prefix_find, prefix_read, prefix_write
random | gaussian deviates, arbitrary piecewise linear deviates, rejection method, more Functions: random_x, random_n, random_ipq, random_rej, ...
rays | ray manipulation for drat package
rezone | point-and-click rezoner for quadrilateral meshes Function: rezone, toy_mesh
rkutta | Runge-Kutta and Bulirsch-Stoer ODE integrators Functions: rkutta, rk_integrate, bstoer, bs_integrate, rkdumb
romberg | Romberg and Simpson adaptive integrators Functions: romberg, simpson
roots | Newton-Raphson root and inverse, Brent maxima and minima Functions: nraphson, f_inverse, mnbrent, mxbrent
series | geometric series solvers Functions: series_s (sum a series), series_r (find ratio given sum and number of terms), series_n (find number of terms given sum and ratio)
silo | open Silo/PDB files Functions: silo_open, silo_cd, silo_ls, silo_var, silo_close
slice3 | 3-D mesh slicing functions, plus plotting functions Functions: mesh3, slice3, slice2, pl3tree, split_palette, etc
spline | cubic spline and tensioned spline interpolation Functions: spline, tspline
string | String manipulation, other utilities Functions: strtrim, strtolower, getdate, reform, scalar, ...
style | low level peek and poke into graphics style sheets Functions: get_style, set_style, read_style, write_style
sysafe | Replacement for system function (but not $ syntax) Functions: sysafe, system
test1 | shock tracker test, poorly vectorizing
test2 | radiation escape factor calculation, highly vectorizing
test3 | scalar arithmetic performance test
testb | binary file I/O tests
testg | a few graphics tests (grtest is a crude tutorial) Functions: testg, lissajous, grtest
testlp | rough Yorick version of Linpack benchmark Function: testlp
testm | matrix and fft tests
testp | reasonably complete Yorick test suite, except graphics Just include it and the tests run immediately, includes: testb, test1, test2, test3
txpath | replacement for old (before 1.5) meaning of text path= keyword Function: rotext
ylmdec | spherical harmonic decomposition sketch for hex package
zroots | find roots of polynomial Function: zroots