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BACKPROD

Replaces the 2D buffer by the product of the current 2D buffer by the transpose of it
see also : DIAGONALIZE

BCOLOR

BCOLOR index window Defines the current background color used for display. The chosen color remains until the next BCOLOR command. index is : 1:white 2:red 3:yellow 4:green 5:cian 6:blue 7:purple 8:black Window is : 1:1D 2:disp 3:contour 4:3D
see also : CCOLOR CDISP2D COLOR DISP1D DISP2D DISP3D SCOLOR

BCORR

BCORR A { R {n} list_of_points 0 } Computes and applies a base-line correction to the current data set. A describe the algorithm used: 1 is linear correction 2 is cubic spline correction. 3 is polynomial (and related) correction o If A is 1 or 2 : R is the radius around which each pivot point is averaged. n in 2D is either f1 or f2 (dimension in which correction is applied). list_of_points is then the list of the pivot points used for the base-line correction. The list finishes by 0. The content of th point stack is used for prompting. Linear correction can use 1 or more pivot points. 1 point corresponds to correction of a continuous level. Spline corrections needs at least 3 points. In any case maximum is 100 pivot points. o If A is 3 : This method uses a correction by estimation of the baseline and subtraction. Words in uppercase are commands. The four steps are : * Initial smooth of data : SMOOTH1 * First segmentation (detection of signal) : SEGM1 * Second segmentation (Polynomial approximation may be done on several areas) : SEGM2 * Approximation (the estimated baseline is an approximation of data points that are not signal) : APPROX If you do not know how to use these corrections the next three commands should help you : * BCORRP : Will prompt you for the related parameters, along with the name of the command.. * BCORRP? : the current choices are listed. * BCORRP0 : the default set up is restored. * BCORRP1 : another set up is activated Polynomial correction is described by a set of related external contexts : BLCW, BLCITER, BLOCBASE, BCORRP, BCORRP?, BCORRP0, BCORRP1, SMOOTH1, WINMA, LEVELHYSTE, SEGM1, BLCU, BLCV, SDS, SDB, SCS, SCB, DCFACTOR, DCITER, MORPHOB, MORPHOS, DCALGO, DCDISTANCE, SEGM2, WINDOW, WINSEGM2, LEVELSEGM2, APPROX, WINMA2, ITERM2, DEGRE, WINLIN.
see also : APPROX BCORRP BCORRP0 BCORRP1 BCORRP? BLCITER BLCU BLCV BLCW BLOCBASE DCALGO DCDISTANCE DCFACTOR DCITER LEVELHYSTE LEVELSEGM2 MEDIAN MORPHOB MORPHOS point SEGM1 SEGM2 SMOOTH SMOOTH1 WINDOW

BCORRP

a step by step command to choose a set up for the BCORR 3 module
see also : BCORR BCORRP?

BCORRP0

Restores the initial configuration with a polynomial approximation for the BCORR 3 module
see also : BCORR BCORRP BCORRP1 BCORRP?

BCORRP1

Enables a configuration with a dynamic clusters segmentation and a moving average approximation for the BCORR 3 module
see also : BCORR BCORRP BCORRP0 BCORRP?

BCORRP?

lists the current configuration for the BCORR 3 module.
see also : BCORR BCORRP0 BCORRP1 BCORRP?

BETA

beta b This context is the angle along the OY axis by which the cube is rotated during a 3D display with the DISP3D/REF3D set of commands
see also : ALPHA DISP3D GAMA

big

obsolete, for compatibility big was removed in Gifa since version 4_09alpha

BLCITER

to be used with BCORR 3 The maximum number of iterations for the whole process
see also : BCORR BCORRP?

BLCU

blcu real_value internal value used by the BCORR 3 algorithm
see also : BCORR BCORRP?

BLCV

blcv real_value internal value used by the BCORR 3 algorithm
see also : BCORR BCORRP?

BLCW

To be used with BCORR 3 When the RMS of the correction is lower than BLCW times the RMS of the data, the correction is finished
see also : BCORR BCORRP?

BLOCBASE

to be used with BCORR 3 All parameters in point unit are scaled in the ratio of the data set size to this parameter.
see also : BCORR BCORRP?

bug_report

for interactive bug report

build2d

build2d file_name builds a 2d from a set of 1D, the name of which are found in file_name one entry per line
see also : build3d READ

build3d

build3d file_name builds a 3d from a set of 2D, the name of which are found in file_name one entry per line
see also : build2d READ

BURG

BURG size Will perform an in-place forward linear prediction, by using the Burg method. The size of the final data-set is size. This command is equivalent to the sequence : DT->AR AR->DT 1 size but is computed on-place, and can thus be used on a full 2D or 3D spectrum.
see also : AR->DT AR->SP burg2d burg3d burg_rev DT->AR ORDER svd_rev

burg2d

burg2d axis new_size axis is F1 or F2, extend the FID up to new_size, using burg method
see also : BURG burg3d

burg3d

burg3d axis new_size axis is F1 F2 or F3 extend the FID up to new_size, using burg method
see also : BURG burg2d

burg_rev

burg_rev n_of_point reconstruct the missing n_of_point first data points using the burg method changes order to n_of_point*2
see also : AR->DT BURG svd_rev

button.g

set-up the basic GUI by loading the default menus
see also : startup.g

BUTTONBOX

BUTTONBOX menu_name [ button_name gifa_command | separator ] (n times) * Permits to construct a new menu in the menu_bar (will create one if none is available). This menu will appear as menu_name in the menu_bar. When menu_name is clicked by the user, a button box will appear, with as many entry as item in the list of commands. Each entry in the list is defined as a couple of word, the first one being the name of the button in the box, the second one being the gifa command to be executed if the button is clicked. The command will be executed exactly as if the user had typed it as the prompt level, thus the command can be a simple command, several commands on a line, of a macro name. However the WHILE, FOR, IF .. THEN, GOTO commands are not available; the IF .. any_command syntaxe is available. If a parameter is missing for the command, the user will be prompted in the text window. The special entry separator is not associated to a command, but permits to enter a separator in the menu box. The list is terminated with a star.
see also : CLOSEBUTTON DIALOGBOX FORMBOX MACRO