| -Histogram 256 | Calculate histogram over a number of bins. |
| -fit gauss | Do a Gaussian or Poisson fit to the histogram. |
| -percentiles | Calculate the percentiles for an image. |
| -verbose 7 | Verbosity of output. |
| -datatype u | Force writing of a new data type. |
| -select 1 | Select an image (default all). |
| -sampling 2,3.5,1 | Sampling (angstrom/voxel, a single value sets all three). |
| -Postscript histo.ps | Postscript output file name. |