All of the VDT2 operations are now thread-safe - see Calling VDT2 Operations from a Preemptive Thread for details. The VDT2 XOP, used for serial I/O, was updated to version 3.00. They were actually implemented in Igor Pro 8.04 but mentioned here to make the situation more clear. These changes were required due to removal of features in macOS Catalina (10.15). Note that the movie is not automatically played-the user will need to manually play the movie. Macintosh: The PlayMovie operation was changed so that the movie file is always passed to the operating system to be opened with the default program for the given extension. In order to troubleshoot slow startup or crashes during startup, start Igor from the command prompt (Windows) or Terminal (Macintosh) with the new /START flag, which is supported on all platforms. Macintosh: Igor Pro 9 no longer displays a splash screen while Igor is starting. See Behavior Changes in Igor Pro 9 for details. These changes may affect some existing Igor experiments. Some behaviors have changed slightly in Igor Pro 9. Just in case you need to go back to an earlier version of Igor, it is a good idea to make backup copies of all your Igor files now. Once you use features added in Igor Pro 9 and save an experiment file, that file may cause errors if you try to read it in an earlier version of Igor. pxp experiment files that it writes are readable by earlier versions of Igor. If you don’t use features new in Igor Pro 9, then. Igor Pro 9 can read files created by all earlier versions of Igor. Igor Pro 9 is based on the Qt 5.12 cross-platform application framework. Added functions vectorization and optimized memory allocation in MatrixOP.29 new MatrixOP functions: spliceCols, zapNaNs, zapINFs, addRows, addCols, waveX, waveY, waveZ, waveT, DecimateMinMax, Select, SQ, VarBeams, SumND, KronProd, bitReverseCol, setColsRange, layerStack, maxMagAB, minAB, minMagAB, gammaln, gamma, expIntegralE1, greaterOrEqual, log2, normP, oneNorm, and expm.Added automatic multithreading in CWT, ImageRegistration, Interp3DPath, norm and ImageFilter.Command completion now includes user-defined functions.The new Presentation Table Procedures package allows you to programmatically create a "presentation table" in a graph, layout or control panel window.Improved editing of Polygons and Beziers.
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