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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by jonni[/i] [br]Hi, Can anyone help me with the following problem. I have a worksheet of XYYYYY... format where each Y data set is a series of positive peaks with a zero baseline. My aim is to create a new worksheet with the same X column as the original worksheet but only the peak height values remaining in the Y columns. This I have achieved using the following script: %k=b c d e f g h i j k l m n o p q r s; //string of column names for (ii=1;ii<=18;ii+=1) { mark -m data3_b; // erase a temporary list (data3_b) of row numbers curve.data$=data1_%[%k,#ii]; // data set to pick peaks from curve.peakindex$=data3_b; // a temporary set of row numbers curve.pickpeaks.rectwidth=0.01; // width of search rectangle curve.pickpeaks.rectheight=0.01; // height of search rectangle curve.pickpeaks.minheight=0.01; // minimum height of smallest peak curve.pickpeaks.simple=1; // baseline already zero curve.pickpeaks(); // pick peaks get data3_b -e jj; // get total number of rows for (kk=1;kk<=jj;kk+=1) { bbb=%(data3,2,kk); // variable to store row number of peak data2_%[%k,#ii][bbb]=data1_%[%k,#ii][bbb]; // data2 is new worksheet }; }; In the above I have already created data3 (temporary) and data2 (output) with X column. Data2 now has the XYYYY.. structure of data1 but only the peak values of Y. Now, apart from the peak heights and positions in X which I get from the above script, I would like to know the peak width (FWHM) and (less importantly) the area under each peak. I attempted to use: curve.halfwidths$=data3_c after curve.peakindex$=data3_b in the above script, but this returned no values. Am I using this object property wrongly, or am I just missing some additional script? Is there no similar object property for the areas, as I cannot find it in the manual? Any help (including how I might improve/simplify the above script) would be appreciated. Thanks. jonni [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.