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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 shirshed[/i] [br]Origin Ver. and Service Release (Select Help-->About Origin): 8.6 Operating System: WIN 7 I have a uniformly gridded 200X1600 (y&X axis respectively) matrix (a ccd image data) of z values. I want to convert it to a nonuniform gridded matrix where the nonuniform gridding comes from the fact of calibrating the X-axis (from pixel to raman shift for ex.). Basically I want to create a 2D surface plot with X axis is now raman shift instead of pixel number. I have the pixel to raman shift calibration file. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.