![]() ![]() Graph -> Add Color Scale Graph -> Add Equation. ( Ctrl-Alt-2) Graph -> Rescale To Show All ( Ctrl-Shift-R) Graph -> Exchange X-Y Axes Graph -> New Legend ( Ctrl-L) Graph -> New Table. The Scripting Menu General Scripting Commands Notes Specific Scripting Commands The Graph Menu Graph -> Add/Remove Curves. View -> Quick Help View -> Console View -> Serial Monitor. ( Ctrl-Shift-T) View -> Project Explorer ( Ctrl-E) View -> Results log View -> Undo/Redo Stack. File -> Open Template File -> Save as Template File-> Print ( Ctrl-P) File-> Print Preview File-> Print All Plots File -> Export Graph File -> Export File -> Import File -> Quit ( Ctrl-Q) The Edit Menu Edit -> Undo ( Ctrl-Z) Edit -> Redo ( Ctrl-Shift-Z) Edit -> Cut Selection ( Ctrl-X) Edit -> Copy Selection ( Ctrl-C) Edit -> Copy Selection (full precision) Edit -> Delete Selection (Del) Paste -> Edit -> Delete Fit Tables Edit -> Clear Log Information Edit -> Preferences. ( Ctrl-Alt-A) File-> Recent Projects File -> Close File-> Save Project ( Ctrl-S) File-> Save Project as. Command Reference The File Menu File-> New -> File -> Open ( Ctrl-O) File -> Open Excel File -> Open ODF Spreadsheet File-> Open Image File ( Ctrl-I) File -> Append Project. 3D plots Direct 3D plot from a function 3D plot from a matrix Multilayer Plots Building a multilayer plot panel Building a multilayer plot step by step 3. Drawing plots with QtiPlot 2D plots 2D plot from data. Introduction What QtiPlot does Command Line Parameters Specify a File Command Line Options General Concepts and Terms Tables Excel workbooks Matrix Plot Window Note Results Log Window The Project Explorer The Quick Help Window The Scripting Console Interoperability with other scientific software OriginLab Microsoft Excel LibreOffice and Apache OpenOffice 2. PS: The behaviour above i seen in both 2.3.0 and 1.26 versions, independently of OS (tried Linux (debian), Mac OS and Windows 10).Table of Contents 1. This bug seems to be only related to fits where yErr are requested to be taken into account. However, user-defining an identical function y0+A*exp(-x/t), only the Nelder-Mead Simplex succeeds, while the Levenberg-Marquardts end up with "iteration not making progress towards solution" and report fit-parameter values different from N-M Simplex. PS: Strangely, when trying polynomial fits instead of the exponential one, the results match including the fit-parameter uncertainties.Īd 2) When playing with the fit options, we have also met another strange behaviour in SciDavis: when fitting the built-in ExpDecay1 function, all three algorithms (Scaled/Unscaled Levenberg-Marquardt and Nelder-Mead Simplex) report sucess and same results. The fits account for the y-uncertainties yErr, however, similar discrepancy is seen when doing unweighted fits. I.e while the central values match, the uncertainties do not. However, using the SciDavis ExpDecay1 the results (both Scaled/Unscaled Levenberg-Marquardt and Nelder-Mead Simplex) are: The results from GnuPlot, python-scipy and are: The data we are trying to fit are: xĪd 1) We are trying to fit these data using an ExpDecay1 function, i.e. ![]() When using built-in function, the fit dialog does not offer possibility to fix parameters. Using a built-in function and identical user-defined function exhibits variations in the fit behaviour. The results, namely the fit-parameter errors are not matching results from other programs (GnuPlot, python-scipy,, where the results are identical). Trying to fit data with an exponential function, we have met with several problems, in summary: ![]()
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