Grapa is a python package providing a graphical interface and the underlying code dedicated to the visualization, analysis and presentation of scientific data, with a focus on photovoltaic research. Version 0.5.2.1 Released 13.04.2018 Bugs Bugs in rounding with infinity values, notably in EQE Curves Version 0.5.2.0 Released 09.04.2018 Additions Actions specific can now be performed on several curves at the same time, provided The corresponding action is available on each selected curve. Example: bandgap from EQE curve, JV fit, fitted curve resample, etc. When extracting Voc(T) from Jsc-Voc data, the data can now be fitted to a certain range and the fit extrapolated to 0 with a single clic. Moreover the Voc @ T=0 are printed in the console. The determination of the optical bandgap from EQE curves can be restricted to a certain wavelength range, in the derivative method. Modifications Curves created from curves actions (fit, etc) are now placed just after the selected curve. Improved the robustness of the JV curve fitting Adjusted precision of default parameters for TRPL fit, EQE exponential decay, and JscVoc curves. In the fits to TRPL data the tau are now non-negative, helping finding a good fit. SIMS data: the GGT keyword now refers to the ^72Ge+ trace and not ^70Ge+ anymore. The color picker popup now displays the current defined color, if possible. Bugs Minor bug solved with overriding textxy values Bug solved that prevented the opening of the annotation popup with some input textxy values Legend location 'w' and 'e' were swapped Solved an issue that cause buttons to not disappear in the actions specific panel. Fit of JV curves, prevents creation of fit curves with non-sensical data in the 1e308 range Solved a bug in the output of summary file of boxplots, not correctly identifying the name of some sample names Version 0.5.1.0 Release 18.03.2018 Additions CurveJV can now read an updated version of the TIV files In the Actions specific to the Curves, the quick access to the offset and muloffset attributes was changed to be Combobox instead of Entries. Added special keywords for offset and muloffset keywords: 'minmax' and '0max', which stretch the data from min to max, and 0 to max respectively. Added options to export Curves or Graph to clipboard with raw or screen data, and with or without properties. JscVoc curves: added a button to separate the data series as Voc vs T. The data is supposed to converge to the bandgap at T=0. CurveArrhenius: the fit range ROI is indicated in the attributes of the fitted Curve. CurveArrhenius: a new possibility is offered to define the x values after the curve creation. Bugs Solved a graphical glitch in the annotation popup, regarding inappropriate "new" labels upon creation and deletion of annotations. Solved a glitch, the filename is not changed when copying the graph to the clipboard Under the hood Moved the class GraphJV from the file curveJV to graphJV