spant 0.17.0

spant 0.16.0

SNR is now defined as the max data point divided by the standard deviation of the noise (n.b. factor of two has been removed in-line with upcoming terminology paper).
Default rats method improved to work with multidimensional datasets.
Added norm_mrs function to normalise the intensity of spectral data.
Added bc_constant function to correct spectral baselines by a constant offset.
Added re_weighting function to apply a resolution enhancement weighting to the FID.
Performance improvement for apodise_xy function.
sd function now works for mrs_data.
Added 2D MRSI support for Siemens IMA format.

Bug fix for using auto_phase function with a single spectrum.
Bug fix for comb_coils not returning unaveraged data when requested.
Added options to combine metabolite signals from the stackplot of a fit object and adjust the plot margins.
Added comb_fits function.
Added collapse_to_dyns function for mrs_fit objects.
RDA reader now extracts geometry information.

Added options to omit basis signals, change label names and combine lipid and MM signals from the stackplot of a fit object.
Added auto_phase function for zeroth order phase-correction of simple spectra.
Added get_subset function to aid MRSI slicing.
Added decimate_mrs function.
Added fit_amps function to quickly extract amplitude estimates from a fit object.
Bug fix for int_spec function.
sim_basis function arguments updated to accept acq_par objects.

Fit results stackplot now has the option to display labels.
Added the option to reverse eddy current correction.
Improved GE p-file reader.
diff function can now be applied to mrs_data objects.
Complex functions: Re, Im, Mod, Arg and Conj can now be applied to mrs_data objects.
Default simulations for Glc and NAAG have been improved.

Added mar argument to plot command.
td2fd and fd2td now give warnings when used with data already in the target domain.
Improved documentation formatting consistency and fixed some spelling errors.
Added rats method.

The names of in-built pulse sequence functions now all start with seq_* to make them easier to find.
Added new functions to simulate the following MRS sequences: CPMG, MEGA-PRESS, STEAM, sLASER. sLASER sequence kindly contributed by Pierre-Gilles Henry.
Bug fix for get_mol_names function.
stackplot function now accepts labels argument and time-domain plotting.
def_acq_paras function now accepts arguments to override the defaults.
Added a source field to mol.paras object to cite the origin of the values.
Option to restore plotting par defaults.
The magrittr pipe operator is now exported.

Interactive plotting function added for fit results - plot_fit_slice_inter.
Bug fix for appending dynamic results.
Bug fix for reading list data files without reference data.
Bug fix for append_dyns function.
basis2mrs_data function has been extended to allow the summation of basis elements and setting of individual amplitudes.
Added a shift function for manual frequency shift adjustment.
Added initial unit tests and automated coveralls checking.

A default brain PRESS basis is now simulated by the fit_mrs function when the basis argument isn’t specified.
Added calc_peak_info function for simple singlet analyses.
crop_spec function now maintains the original frequency scale.
The basis set used for analyses has now been added to the fit result object.
Bug fix for simulating basis sets with one element.
lb function can now be used with basis-set objects.
Bug fix for spar_sdat reader for non-localised MRS.
AppVeyor now being used to test Windows compatibility - John Muschelli.

Added stackplot method for fit objects.
Added functions for registering and visualising SVS volumes on images and performing partial volume correction.
Philips “list data” also now reads noise scans.
calc_coil_noise_cor, calc_coil_noise_sd functions added to aid coil combination.
Documentation updates for plotting methods.
Added some simulation methods to userland.