average         calculate averages of an image series

 

USAGE:        average

        .First input filename: image001
        [Enter the name of the first image that will be averaged.]
        
        .Add to existing file Y/N: N
        [Specify if you are adding images to an already existing average.]
        
        If the answer to the question above was "Y"
                .Number of images already averaged: 127
                [Enter the number of images that were used to calculate the 
                existing average.]
            
                    .Average offset from before: 0.23
                    [Enter the average offset that was determined by the previous
                     averaging step.]
         
        .File numbers in document file? (D): D
        [Answer "D" if the file numbers should be read from a document file.]
        
        If "D" was answered:
                .Document file: Numdoc001
                [Enter the name of the document file that contains the file
                 numbers.]
                 
                .Column containing file numbers: 3
                [Enter the column that contains the file numbers. (key=0).]
        
        Otherwise:
         .File numbers: 1-250
         [Enter the file numbers of the images that are averaged. Missing images
          allowed.]
          
         .Average all (def), split odd/even, (A/O): O
         [Enter if you want to average all images of split them into two sets
          and calculate two averages and veriances. Splitting the data set
          is intendend for resolution measurements.]
          
         If "A" was answered:
         .Average file name: average001
         [Enter name of the average image.]
         
         .Variance file name: vari001
         [Enter name of the variance image.]
         
         If "O" (split odd/even) was answered:
         .Odd vaverage file name: odaverage001
         [Enter file name for the average of the odd particles.]
         
         .Odd variance file name: odvari001
         [Enter file name for the variance image of the odd particles.]
         
         .Even average file name: evaverage001
         [Enter file name for the average of the even particles.]
         
         .Even variance file name: evvari001
         [Enter file name for the variance image of the even particles.]
         
         .Enter varaible of output odffset: v.off
         [Enter a variable that will receive the offset value of the average
          witbin a named tuple. The offset will be found in v.off.offset]

Programs: adds_m.f, in /extras/fstandalone/applications. Program 
          estracted /adapted from SPIDER.

Author(s): M.Radermacher, others.