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A Library for Handling
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Description:
This is a
family of functions which set a specified attribute value for an
Object
using one of several different data types. The type is selected by replacing
X
in the function name by C, D, F, I or L, to supply a value in const
char
(i.e. string), double, float, int, or long format, respectively.
If possible, the value you supply is converted to the type of the attribute.
If conversion is not possible, an error will result.
Synopsis
void
astSetX(
AstObject this,
const char attrib,
Xtype
value )
Parameters:
this
Pointer to the Object.
attrib
Pointer to a
null-terminated character string containing the name of the attribute whose value is to be
set.
value
The value to be set for the attribute, in the data type corresponding to
X
(or, in the case of astSetC, a pointer to a null-terminated character string containing
this value).
Applicability
Object
These functions apply to all Objects.
Examples:
astSetI( frame, "
Preserve"
, 1 );
Sets the Preserve attribute value for
Object "
frame"
to 1. astSetC( plot, "
Format(1)"
, "
%.2g"
);
Sets the Format(1)
attribute value for Object "
plot"
to the character string "
%.2g"
. Notes:
Copyright (C) 2021 East Asian Observatory
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- AST
A Library for Handling
World
Coordinate Systems
in Astronomy - Next→
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