Hello, I am a brand new user of ROOT that would like to use it for graphing 4 dimensions. First off, let me explain what I would like to do and then someone can tell me: 1. Is it possible? 2. If yes to (1), then how would I go about doing it? I have data in an ASCII format consisting of 4 columns. The first 2 columns, call them index1 and index2 (look at these two as making up the x and y axes) are indices for both the 3rd. and 4th. columns. The 3rd. column represents "test" data and the 4th. column represents what I would call "golden" data. What I would like to be able to do is to "color code" the 3D surface represented by column 3 to correspond with the delta it has with the "golden" data in column 4. The greater the delta, the more the color changes. Thank you very much in advance for your help. I really like the concept that ROOT is using and would love to be able to use it for the case I've mentioned above. With Best Regards, - Brendan -- ---------------------------------------------------------- Brendan Rankin Senior Applications Consultant (408)396-7176 (Cell) Silicon Metrics Corporation (408)965-5331 (Work) Email: brendan.rankin@siliconmetrics.com ----------------------------------------------------------
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