News and Changelog

2026-03-05

v0.9.2:

New Features:

• oimBinaryOrbit: a binary orbit component with customizable primary and secondary stars including radial velocity & separation computation to link with external prior in simulator.

• oimDisco: an implementation of the DISCO gaseous disk semi-physical model.

• oimTempGrad: implementation of temperature gradient disc model.

• oimAsymTempGrad: implementation of asymmetric-temperature gradient disc model.

• oimComputeChi2PlusOneUncertainties: error estimations based on the \(min(\chi^2_r) + 1\) method

• Implementation of external constraints (with user prior function) on the simulator oimSimulator.cprior

• oimParamLinkerFunction: possiblity to link multiple parameters together using a user function

Upgrade features:

• oimParam: access to parameter quantity (i.e., as astropy definition value x unit) through quantity member

• oimParam: possibility to set directly unit at creation by passing a astropy quantity

2025-10-01

v0.9.0: 2nd Beta Version

New Features:

• added \(\chi^2_r\) grid exploration: oimFitterGrid

• added simple \(\chi^2_r\) minimizer based on Minimize scipy function: oimFitterMinimize

• added Dynamic Nested Sampling fitter based on dynesty package : oimFitterDynesty

• New models: updated fast rotator, temperature gradient disk,

• new residual plots for simulator: plotWithResidual

• new documentation including examples from the 2024 VLTI School

2023-07-12

v0.8.0: First Beta Version

Basic features of the oimodeler package are almost fully implemented although not fully tested and verified. Features still missing before v1.0:

• Components & models : Exploration of grid of models, binary orbit, rotating star, temperature gradient disk, blackbody-based flux interpolator, saving of model and parameters

• Fitter : Levenberg-Marquardt fitter with various global search patterns, more options for the emcee-base fitter, chain of fitters, saving fitter & results

New Features

• add support to pathlib Path for oimData and oimData

• new class oimFluxData: importing photometric and spectroscopic measurement into oimodeler

• New plot options for oimSimulator.plot

• New method plotWlTemplate for generating multi-plots (one per baseline) for interferometric as function of the wavelength for the oimSimulator class

• added option dataType in oimSimulator to allow to choose which data type (VIS2DATA, VISPHI…) to include in the chi2 computation without the use of data filtering

• added kwargs options from the corner.py module in the oimFitterEmcee.cornerPlot method

• added many data filters/modifiers :

  • oimKeepDataType : specifying which data type to keep : VIS2DATA, VISPHI, …

  • oimWavelengthShiftFilter : shifting wavelengths

  • oimWavelengthSmoothingFilter : “Smoothing” data by convolution on x walvength-pixels

  • oimWavelengthBinningFilter: binning data in wavelength

  • oimFlagWithExpressionFilter: filtering out or in with an expression including columns from the oifits table (ex “VIS2ERR/VIS2DATA>0.05” will remove VIS2DATA with more than 5% error)

  • oimDiffErrFilter : computing differential errors from the rms in a specified spectral band

  • oimSetMinErrFilter : set a minimum error on the data in % (for visibilities) or deg (for phase)

• rewritting of uvPlot function: now allow colorscale for baselines, configuration, array, file, and allow plotting as a function of spatial frequency instead of length.

• added new oimWlTemplatePlots class to produce figure with multiple wavelength-plots per baseline of all interferometric quantities.

• added functions to create all oifits extensions: createOiTarget createOiArray createOiWavelength createOiVis2 createOiVis createOiT3 createOiFlux createOiTargetFromSimbad

Bugs fixed

• rewritting of oimFitterEmcee.walkerPlot method to speed it up and adding ncolors option for number of color in colorscale (generation time of the plot is proportionnal to the number of colors)

• corrected many bugs in the oimPlot function : possibility to plot data (or set coloscale) as function of PA, baseline LENGTH …

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