Origin Ver. and Service Release (Select Help-->About Origin): Orogon Pro 8 SR4 v.8.0951 (B591) Operating System:Window VISTA
I need to plot the contour graph from my 3D data without interpolation or extrapolation. I know that I have to choose the regular gridding method when the x, y data are evenly spaced or the sparse method when they are not. But when I did, it seemed like the original data were seriously distorted.
Below is the original that I ploted using the other software.
I thought that the original 3D data are evenly spaced, so I choosed the regular gridding method to convert the dataset to matrix and plot it. It looked like below, It seems like that it erased some data for some reason.
So I tried with sparse method and below is the result, Everything is gone.
Please send your XYZ data or your project to tech support so they can look at what is going on with your particular data.
I also wanted to comment that in version 8, you can select your Z column of your XYZ data and directly select Plot->Contour->XYZ Contour. This performs triangulation on the raw data and directly plots a contour plot without creating a matrix. This method may be useful if you do not want the matrix and just want to see a contour plot. If you double-click on the plot, the Plot Details dialog has a Contour Info tab on the right side that has options for smoothing etc.
Problem on 'Convert to Matrix'
Posted - 01/27/2009 : 1:35:35 PM
