TraceSet¶
-
class
pydl.pydlutils.trace.
TraceSet
(*args, **kwargs)[source]¶ Bases:
object
Implements the idea of a trace set.
Attributes
func
(
str
) Name of function type used to fit the trace set.xmin
(float-like) Minimum x value.
xmax
(float-like) Maximum x value.
coeff
(array-like) Coefficients of the trace set fit.
nTrace
(
int
) Number of traces in the object.ncoeff
(
int
) Number of coefficients of the trace set fit.xjumplo
(float-like) Jump value, for BOSS readouts.
xjumphi
(float-like) Jump value, for BOSS readouts.
xjumpval
(float-like) Jump value, for BOSS readouts.
outmask
(array-like) When initialized with x,y positions, this contains the rejected points.
yfit
(array-like) When initialized with x,y positions, this contains the fitted y values.
This class can be initialized either with a set of xy positions, or with a trace set HDU from a FITS file.
Attributes Summary
True
if jump conditions are set.Number of x values.
Range of x values.
Midpoint of x values.
Methods Summary
xnorm
(xinput, jump)Convert input x coordinates to normalized coordinates suitable for input to special polynomials.
xy
([xpos, ignore_jump])Convert from a trace set to an array of x,y positions.
Attributes Documentation
-
has_jump
¶ True
if jump conditions are set.
-
nx
¶ Number of x values.
-
xRange
¶ Range of x values.
-
xmid
¶ Midpoint of x values.
Methods Documentation
-
xnorm
(xinput, jump)[source]¶ Convert input x coordinates to normalized coordinates suitable for input to special polynomials.
- Parameters
xinput : array-like
Input coordinates.
jump :
bool
Set to
True
if there is a jump.- Returns
array-like
Normalized coordinates.
-
xy
(xpos=None, ignore_jump=False)[source]¶ Convert from a trace set to an array of x,y positions.
- Parameters
xpos : array-like, optional
If provided, evaluate the trace set at these positions. Otherwise the positions will be constructed from the trace set object iself.
ignore_jump :
bool
, optionalIf
True
, ignore any jump information in thetset
object- Returns
tuple()
of array-likeThe x, y positions.
-