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nicest__define.pro
Class description for nicest
Inheritance
Fields in skymap
- VAL ptr_new()
- MAP ptr_new()
- EMAP ptr_new()
- X ptr_new()
- Y ptr_new()
- VERBOSE 0S
- DVAL ptr_new()
- EUCLIDIAN 0S
- SIGMA 0.00000
- INCLUDED ptr_new()
- TRUNCATE 0.00000
Routines
result = nicest::weight(id, x, y)This class implements the NICEST algorithm to make smoothed extinction maps based on on stellar reddening data.
nicest::mapeMap [, nocorr=nocorr]Creates a smoothed map, using the Nicest weighting scheme
nicest::setAlpha, alphaSet the value of alpha, the slope of the number counts
result = nicest::getAlpha()Return the value of alpha
result = nicest::init(map, x, y, val, dval, fwhm=fwhm, truncate=truncate, verbose=verbose, alpha=alpha, k=k)nicest__define
Routine details
topnicest::weight
result = nicest::weight(id, x, y)
This class implements the NICEST algorithm to make smoothed extinction maps based on on stellar reddening data. The relevatn equations are
(1)A = sum(w_n A_n) / sum(w_n) - beta sum(w_n sigma_n^2) / sum(w_n) (2)beta = alpha * k * ln10
A_n, sigma_n are the individual measurements+errors alpha is the slope of the number counts N(mag) ~ 10^alpha mag k is the ratio A_lambda/A
w_n = w(x';x)10^[alpha * k * An], w(x';x) is a gaussian.
SUPERCLASSES: skymap
Parameters
- id
- x
- y
topnicest::mapeMap
nicest::mapeMap [, nocorr=nocorr]
Creates a smoothed map, using the Nicest weighting scheme
Keywords
- nocorr in optional
Set to exclude the second term in equation (1) above. This speeds up the calculation by about a factor of 2. Since the correction term is (to first order) constant, it only affects the zero-point, and can be removed via comparison to a control field.
topnicest::setAlpha
nicest::setAlpha, alpha
Set the value of alpha, the slope of the number counts
Parameters
- alpha
topnicest::init
result = nicest::init(map, x, y, val, dval, fwhm=fwhm, truncate=truncate, verbose=verbose, alpha=alpha, k=k)
Parameters
- map
- x
- y
- val
- dval
Keywords
- fwhm
- truncate
- verbose
- alpha
- k
topnicest__define
nicest__define
File attributes
| Modifcation date: | Wed Aug 24 21:56:32 2011 |
| Lines: | 102 |