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Use Script to Search for Baseline Anchor Points in

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T O P I C R E V I E W
StijnR	Posted - 12/05/2023 : 07:23:25 AM Dear all, I am trying to run the script provided on the website: https://www.originlab.com/doc/Tutorials/Use-Script-Anchors When I follow the procedure on my own dataset, I get the message that no peaks are found but no additional information is given. Does anyone know why it doesn't work? I added the script and the data below: Dataset dspos; pkfind iy:=(dsx, dsy) dir:=p npts:=5 value:=200 ocenter:=dspos; // Find major peak positions int npk=dspos.GetSize(); // Get major peak numbers // Create datasets to store anchor points int nn = dsx.GetSize(); // Get source X size dataset apt_x, apt_y;// Create datasets to store anchor points apt_x.SetSize(npk+1); // Set anchor points number apt_y.SetSize(npk+1); apt_x[1] = dsx[1]; // Set 1st data point as 1st anchor point apt_y[1] = dsy[1]; apt_x[npk+1] = dsx[nn]; // Set last data point as last anchor point apt_y[npk+1] = dsy[nn]; for (ii=1; ii<=npk; ii++) { int istart = dspos[ii]; // Get row index of ii-th peak int iend = dspos[ii+1]; // Get row index of the next peak range rtemp = [??]!dsy[$(istart):$(iend)]; // Declare the range and point to the loose dataset limit rtemp; // Get stats of the subrange int ind = limit.imin; // Get min Y row index apt_y[ii+1]=limit.ymin; // Get min Y between two peaks as anchor point apt_x[ii+1]=dsx[ind]; }; My data: 0.0355 0.03368 0.03186 0.03004 0.02823 0.02642 0.02462 0.02284 0.02106 0.01929 0.01754 0.0158 0.01408 0.01238 0.01069 0.00903 0.00738 0.00576 0.00415 0.00258 0.00102 -5.01439E-4 -0.002 -0.00347 -0.00492 -0.00633 -0.00771 -0.00906 -0.01038 -0.01167 -0.01293 -0.01415 -0.01533 -0.01649 -0.0176 -0.01869 -0.01973 -0.02074 -0.02172 -0.02266 -0.02356 -0.02442 -0.02525 -0.02604 -0.0268 -0.02752 -0.0282 -0.02884 -0.02945 -0.03003 -0.03057 -0.03108 -0.03155 -0.03198 -0.03239 -0.03276 -0.0331 -0.03341 -0.03368 -0.03393 -0.03414 -0.03433 -0.03449 -0.03462 -0.03473 -0.03481 -0.03486 -0.03489 -0.0349 -0.03489 -0.03485 -0.03479 -0.03472 -0.03462 -0.03451 -0.03438 -0.03423 -0.03407 -0.0339 -0.03371 -0.03351 -0.0333 -0.03307 -0.03284 -0.0326 -0.03235 -0.03209 -0.03183 -0.03156 -0.03129 -0.03101 -0.03073 -0.03045 -0.03016 -0.02987 -0.02959 -0.0293 -0.02901 -0.02872 -0.02844 -0.02816 -0.02788 -0.0276 -0.02732 -0.02705 -0.02679 -0.02652 -0.02627 -0.02601 -0.02576 -0.02552 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1 L A T E S T R E P L I E S (Newest First)
ChaoC	Posted - 12/05/2023 : 11:20:50 AM Hello, I would recommend taking a look at the peak finding part of the script, pkfind: https://www.originlab.com/doc/X-Function/ref/pkFind This will help you understand the options for peak finding and use suitable options for your dataset. If you remove the value:=200, it should help you get started. Best, Chao

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