SDSS Spectroscopic Data (pydl.pydlspec2d
)¶
Introduction¶
This is a placeholder for pydlspec2d documentation.
API¶
pydl.pydlspec2d Package¶
This subpackage implements functions from the idlspec2d package.
Classes¶
Pydlspec2dException |
Exceptions raised by pydl.pydlspec2d that don’t fit into a standard exception class like ValueError . |
Pydlspec2dUserWarning |
Class for warnings issued by pydl.pydlspec2d . |
Class Inheritance Diagram¶
pydl.pydlspec2d.spec1d Module¶
This module corresponds to the spec1d directory in idlspec2d.
Functions¶
findspec (*args, **kwargs) |
Find SDSS/BOSS spectra that match a given RA, Dec. |
latest_mjd (plate, **kwargs) |
Find the most recent MJD associated with a plate. |
number_of_fibers (plate, **kwargs) |
Returns the total number of fibers per plate. |
pca_solve (newflux, newivar[, maxiter, …]) |
Replacement for idlspec2d pca_solve.pro. |
plot_eig (filename[, title]) |
Plot spectra from an eigenspectra/template file. |
preprocess_spectra (flux, ivar[, loglam, …]) |
Handle the processing of input spectra through the combine1fiber() stage. |
readspec (platein[, mjd, fiber]) |
Read SDSS/BOSS spec2d & spec1d files. |
skymask (invvar, andmask[, ormask, ngrow]) |
Mask regions where sky-subtraction errors are expected to dominate. |
spec_append (spec1, spec2[, pixshift]) |
Append the array spec2 to the array spec1 & return a new array. |
spec_path (plate[, path, topdir, run2d]) |
Return the directory containing spPlate files. |
template_input (inputfile, dumpfile[, flux, …]) |
Collect spectra and pass them to PCA or HMF solvers to compute spectral templates. |
template_input_main () |
Entry point for the compute_templates script. |
template_metadata (inputfile[, verbose]) |
Read template metadata from file. |
template_qso (metadata, newflux, newivar[, …]) |
Run PCA or HMF on QSO spectra. |
template_star (metadata, newloglam, newflux, …) |
Run PCA or HMF on stellar spectra of various classes. |
wavevector (minfullwave, maxfullwave[, …]) |
Return an array of wavelengths. |
Classes¶
HMF (spectra, invvar[, K, n_iter, seed, …]) |
Class used to manage data for Heteroscedastic Matrix Factorization (HMF). |
Class Inheritance Diagram¶
pydl.pydlspec2d.spec2d Module¶
This module corresponds to the spec2d directory in idlspec2d.
Functions¶
aesthetics (flux, invvar[, method]) |
Add nice values to a spectrum where it is masked. |
combine1fiber (inloglam, objflux, newloglam) |
Combine several spectra of the same object, or resample a single spectrum. |
filter_thru (flux[, waveimg, wset, mask, …]) |
Compute throughput in SDSS filters. |