All Forums  Origin Forum for Programming  LabTalk Forum  select specific rows for calculation ??

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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 DanielHenry[/i] [br]Origin Ver. 2016G Operating System: Windows 10 I like to perform simple calculation on data in a column, but use only selected rows. If I use the Command Window I can do: col(C)=90-col(B)[url]omegle[/url] [url]xender[/url] which will perform the calculation on all rows. I want the calculation on every 3rd row, i.e. 1st, 4th, 7th ... and the other data should be just copied as they are. I tried: for (ii =1; ii <=wks.maxrows; ii +=3) {col(3)=90-col(2)[ii]} but this gives a constant value in the 3rd column. Can anyone help? Thanks. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.