Module functions to load source and background data from a FITS image into Sherpa
Integer_Type load_image([Integer_Type], {String_Type | Struct_Type})
Integer_Type load_bimage([Integer_Type], {String_Type | Struct_Type})
Success/Error Return Values: 1/0
Arguments:
(1) Data set number (default 1)
(2) FITS image filename, or
(2) S-Lang variable output by readimage()
The function load_image() loads data from a FITS image file
into a Sherpa data set. The function load_bimage() loads
data from a FITS image file into the background associated with a Sherpa
source data set. (The brackets indicate an optional letter in the function
name, with ``[b]'' representing functions to use with background data.
Note that background functions currently assume that the setting of
multiback in the Sherpa state object is 0,
i.e., that only one background dataset is allowed per
source dataset.) WCS information is automatically loaded from the
header into Sherpa, if it exists.
See the related Sherpa command
READ
for more information.
sherpa> () = load_image(,"example.fits")
sherpa> () = load_image(1,"example.fits")
sherpa> () = load_bpha(,"example.fits")
sherpa> () = load_bpha(1,"example.fits")
The first two commands will load data from the FITS image file into
Sherpa source data set 1. The last two commands will load data
from the FITS image file into the background associated with Sherpa
source data set 1.
sherpa> foo = readimage("example.pha")
sherpa> () = load_image(1,foo)
Here the data are read into the S-Lang variable ``foo''. The
load_image() function then reads the data from
arrays which are part of the variable ``foo''.
- chandra
-
guide
- sherpa
-
autoest,
back,
berrors,
bsyserrors,
coord,
data,
dataspace,
fakeit,
feffile,
group,
guess,
is_subtracted,
load,
load_arf,
load_ascii,
load_back_from,
load_backset,
load_dataset,
load_fitsbin,
load_inst,
load_inst_from,
load_pha,
load_pha2,
load_rmf,
read,
set_analysis,
set_axes,
set_backscale,
set_coord,
set_data,
set_exptime,
set_subtract,
set_weights,
setback,
setdata,
subtract,
ungroup,
unsubtract,
use
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