Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.atnf.csiro.au/computing/software/gipsy/sub/pgerrb.dc2 Дата изменения: Wed Oct 31 05:16:09 2001 Дата индексирования: Fri Jan 16 01:17:17 2009 Кодировка: Поисковые слова: http astrokuban.info astrokuban

Name: PGERRB

Purpose: horizontal or vertical error bar

Category: GRAPHICS

File: pgplot.src

Author: T.J. Pearson

Use: see description below.

Description:

SUBROUTINE PGERRB (DIR, N, X, Y, E, T)
INTEGER DIR, N
REAL X(*), Y(*), E(*)
REAL T

Plot error bars in the direction specified by DIR.
This routine draws an error bar only; to mark the data point at
the start of the error bar, an additional call to PGPT is required.

Arguments:
DIR (input) : direction to plot the error bar relative to
the data point.
One-sided error bar:
DIR is 1 for +X (X to X+E);
2 for +Y (Y to Y+E);
3 for -X (X to X-E);
4 for -Y (Y to Y-E).
Two-sided error bar:
DIR is 5 for +/-X (X-E to X+E);
6 for +/-Y (Y-E to Y+E).
N (input) : number of error bars to plot.
X (input) : world x-coordinates of the data.
Y (input) : world y-coordinates of the data.
E (input) : value of error bar distance to be added to the
data position in world coordinates.
T (input) : length of terminals to be drawn at the ends
of the error bar, as a multiple of the default
length; if T = 0.0, no terminals will be drawn.

Note: the dimension of arrays X, Y, and E must be greater
than or equal to N. If N is 1, X, Y, and E may be scalar
variables, or expressions.

Updates: Oct 16, 1998: JPT automatically extracted from source.