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StijnR

France
1 Posts
Posted - 12/05/2023 :  07:23:25 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
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
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Stijn

ChaoC

USA
174 Posts
Posted - 12/05/2023 :  11:20:50 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
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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