.help revisions Jun88 pkg.utilities .nf mkpkg utilities.hd lcase.x -> t_lcase.x luase.x -> t_ucase.x split.x -> t_split.x detab.x -> t_detab.x entab.x -> t_entab.x doc/bases.hlp + Renamed files, added help page for BASES task. (10/24/11) ======= V2.12.2 ======= utilities$urand.x Modified method based on clktime for generating a new seed when the users specifies it as INDEF so that it doesn't have a 1 second granularity. (8/7/03, Valdes) ===== V2.12 ===== utilities$mkpkg Added missing dependencies. (10/11/99, Valdes) utilities$curfit.gx utilities$curfit.x Removed an unneccessay include file statmenet. (9/22/99, Davis) ======= V2.11.2 ======= utilities$surfit.par utilities$t_surfit.x utilities$doc/surfit.hlp Added support for the half cross-terms option to the surfit task. This involved changing the type of the xterms parameter from boolen (yes/no) to string (none,half,full) but involved no other interface changes. (7/6/99, Davis) utilities$doc/surfit.hlp Fixed minor formating problem. (4/22/99, Valdes) ======= V2.11.1 ======= utilities$urand.x utilities$doc/urand.hlp If the "seed" parameter is set to INDEF then the clock time (integer seconds since 1980) will be used as the seed. This allows different executions to produce different random numbers. (9/23/97, Valdes) =========== V2.11export =========== utilities$curfit.gx Removed repeated output and added a comment character to the table header line. (2/29/95, Valdes) utilities$t_polyfit.x Revoved the dependent variable normalization which was not doing anything to improve the numerical statbility of the routine and which was causing problems in the computation of the reduced chi-squared and standard deviation statistics. (7/11/94 LED) utilities$t_polyfit.x utilities$pfregres.f Added a trap for rmul values < 0.0 and > 1.0 to the polyfit routine to avoid floating operand errors caused by trying to take the square route of a negative number. (6/20/94 LED) utilities$curfit.gx Removed the graph limit setting so that the graph will be automatically drawn with the default buffer distance from the end of the data. Previously the end datapoints would fall right on the axes. (5/10/94, Valdes) utilities$t_surfit.x + utilities$surfit.par + utilities$doc/surfit.hlp + utilities$x_utilities.x utilities$mkpkg utilities$utilities.cl utilities$utilities.men utilities$utilities.hd A task for fitting a 2D function or "surface" to an irregularly sampled set of x, y, and z points has been added. (7/6/93, Valdes) utilities$curfit/t_curfit.x,curfit.gx Curfit was failing if the input file list contained more than one file or image. The problem was that ic_open was being called before the file loop but ic_close(rd) was being called after every fit leaving a null pointer in place for the second file. (7/30/90 LED) utilities$doc/polyfit.hlp Added the missing "statistical" heading under the weighting section. (7/23/90 LED) utilities$lcase.x Changed the default output file name extension from ".uc" to ".lc". (3/7/90 LED) utilities$t_curfit.x For list input only, curfit now sorts the input array before fitting. Sorted data is required by the rg_ranges procedure (even in the default case of sample=*) or else data points will be ommitted from the fit. (24/6/88 ShJ) utilities$t_curfit.x,curfit.gx Davis, December 2, 1987 1. Added a new parameter weighting to the curfit task. The four weighting options are uniform, user, statistical and instrumental. The weights in the four cases are 1.0, user input, 1/y and 1/sigmay ** 2. In the latter case the weight that the user supplies is interpreted as sigmay. All four options are available if input is from a list or STDIN. If input is from an image section only the uniform and statistical options are available. utilities$t_polyfit.x Davis, November 23, 1987. 1. Added a new parameter weighting to the polyfit task. The three weighting options are instrumental, uniform and statistical. The weights in the three cases are 1./sigy ** 2, 1.0 and 1/y consistent with the Bevington definitions. If the weighting is instrumental the user must supply the error in y as well as x and y. utilities$*x Valdes, February 17, 1987 1. Required GIO changes. utilities$t_curfit.x, curfit.gx: Valdes, July 3, 1986 1. Modified CURFIT to use new ICFIT package. ________________________________________ From: Valdes Mar 14, 1986 Task: Curfit 1. The CURFIT task has been modified to allow switching between single and double precision calculations. Generally double precision is used but this task provides a convenient test facility for testing changes in the mathematical routines or which precision is appropriate for a new task being developed. 2. The help page was updated. ________________________________________ From: Hammond Jan 6, 1986 Task: Curfit 1. A new task, Curfit, has been installed. It is the cl interface to the curfit package and allows for interactive fitting of functions to list or image data. The function types supported are Legendre or Chebyshev polynomials and linear or cubic splines. __________________________________________ From: Hammond Dec 19, 1985 Task: Polyfit 1. Polyfit no longer gets a floating divide by zero when a linear fit has a correlation = 1. The problem was in the error calculation (ftest) portion of the Bevington routine regres. This problem was reported by ST. .endhelp