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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 shafqat[/i] [br]Origin Ver.9 and Service Release (Select Help-->About Origin): Operating System: Windows Dear All I have a 4D data. I want to plot a 3D surface coloured map with the fourth column. I know some of this has been discussed before, but it really does not solve my problem. I have following issues 1> If I plot my 3D (First three columns X, Y, Z) I get a triangular surface coloured mapped with the 3rd column. I do not want to colour map it with the third column but I want to keep the shape of the 3D data (a triangular surface). When I convert the 3D data into a matrix I get a rectangular surface which is not a true representation of my data, but I can then colour map it with the fourth column data (by converting it into the matrix). So the problem is how can I keep the shape and colour map it with the fourth column? 2> Is it really necessary to convert my 4D data into matrices to plot a coloured map surface? Can I plot 3D surface (from first three columns and colour map it with fourth without converting anything into matrices.) Thanks in advance, Shafqat [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.