On Wed, Oct 12, 2011 at 04:49:27PM -0600, Jonathan Abbott wrote: > I am using a Zygo Mesa laser interferometer to measure the radius of > curvature in silicon wafers. I save the data as a binary file and open it in > Gwyddion, go to 'Data Process' and select 'Curvature'. I think I've > convinced myself that the option to 'Include only masked region' is the one > I want, this will only include the actual data and exclude the area outside > the circle. Is this correct?
I don't know what your data looks like exactly but normally the import modules mark invalid data with a mask so you should exclude the masked area. > I noticed that I get different values for the radius of curvature if I > 'Shift minimum data value to zero'. Is this expected? No, it should be the same (and it is if I test it). Using ‘Zero mean value’ or a similar function beforehand can reduce errors related to finite precision of real numbers but normally this should not be an issue. Yeti ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2d-oct _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
