"Pythphys", would it be too demanding to ask you to sign your messages with a human name?... Danke.
You ask: > - changing to an image grey scale only needs ... what? plt.set_cmap(plt.cm.gray) in the context of your current figure. Or, use cmap=... in your imshow. Please, look up "colormap" in the documentation. > - I need to do a 'plane fit' of the image. Does matplotlib > have some routine for this? Or shall I use other math libs? I am not a guru of matplotlib, but this is a visualisation package, not a data processing one. Scipy (numpy) have some interpolation procedures, polyfit, etc. but I don't remember without digging the docs (which you might do as well) whether multidimensional fitting is there. Anyway, why not use your head? This is a standard student exercise. You need to fit: zf = ax + by + c, having z =f(x,y) in your image, am I right? If not, forget the rest. Use the linear regression, find the zero of the gradient wrt (a,b,c) of SUM[(ax +by +c - z)^2] and that's all. The most tragic part of the exercise is the necessity of solving a linear equation set in 3 variables... Jerzy Karczmarczuk Caen, France ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
