pixelwise regression for time series images  blofton  5/12/10 2:18 PM  I’ve written a program that uses LINFIT to calculate a linear model to each pixel in a multitemporal, registered series of images. That is, I fit a line in the time (z) dimension at each x,y pixel location. However, I am using nested loops to do this and it takes a while to run. For larger images (1024X1024) there is no hope. I am wondering if you’ve come across a better (IDLesque) method of doing this; I’ve not seen anything online. Thanks for any suggestions, brad 
Re: pixelwise regression for time series images  bstecklu  5/13/10 2:57 AM  One can do that without loops. Just write down the regression equations, keeping in mind that the summation has to be done for the 3rd dimension. Actually this is what I like about IDL, you can think of bigger entities than just a single value. I attached a function which works for me. Regards, 
Re: pixelwise regression for time series images  David Fanning  5/13/10 5:28 AM  Bringfried Stecklum writes: > One can do that without loops. Just write down the regression equations, keeping Wow. Aside from how elegant this is, it really makes Cheers, David  
Re: pixelwise regression for time series images  David Fanning  5/13/10 7:48 AM  Bringfried Stecklum writes: > One can do that without loops. Just write down the regression equations, keeping Looks like we might also need "ima2cube". Cheers, David Sepore ma de ni thue. ("Perhaps thos speakest truth.") 
Re: pixelwise regression for time series images  Craig Markwardt  5/13/10 8:51 AM  On May 13, 8:28 am, David Fanning <n...@dfanning.com> wrote: Heh, I still think in round () array indices. To me, the notation Craig 
Re: pixelwise regression for time series images  David Fanning  5/13/10 9:14 AM  Craig Markwardt writes: > Heh, I still think in round () array indices. To me, the notation I'm willing to make an exception for anyone still using By the way, I spent the evening talking to a friend
