Appion

h1. File Formats

_...under construction..._

h2. CCP4, MRC, and variants

|_. byte

    offset |_. word

               offset

              (first=0) |_. word

                            index

                            (first=1) |_. field      |_. type  |_. description         |_. "CCP4":http://www.ccp4.ac.uk/html/maplib.html#description |_. "MRC":http://www2.mrc-lmb.cam.ac.uk/research/locally-developed-software/image-processing-software/#image   |_. "MRC-IMOD":http://bio3d.colorado.edu/imod/doc/mrc_format.txt | 

|>.   0 |>.   0 |>.   1 |=. N ~x~         |/3. int32 |/3. 3-D size of data array,

                                                          fastest changing first   |

|>.   4 |>.   1 |>.   2 |=. N ~y~         |

|>.   8 |>.   2 |>.   3 |=. N ~z~         |

|>.  12 |>.   3 |>.   4 |=. mode          | int32 | data type:

                                                  0: signed 8-bit integer

                                                  1: signed 16-bit integer

                                                  2: 32-bit float

                                                  3: 16-bit complex integer

                                                  4: 32-bit complex float     | also:

                                                                                mode 5:  0          |  |  also:

                                                                                                          6:  16-bit unsigned integer

                                                                                                         16:  3x8-bit unsigned int, RGB  

                                                                                                        NOTE: mode 0 may be signed

                                                                                                        or unsigned depending 

                                                                                                        on codes found at byte

                                                                                                        offset 152 and 156               |

|>.  16 |>.   4 |>.   5 |=. Start ~x~      |/3. int32 |/3. number of the first element

                                                         in each dimension, if this

                                                         is a sub-array of another |

|>.  20 |>.   5 |>.   6 |=. Start ~y~      |

|>.  24 |>.   6 |>.   7 |=. Start ~z~      |

|>.  28 |>.   7 |>.   8 |=. Intervals ~x~  |/3. int32 |/3. number of grid intervals

                                                           along each dimension      |

|>.  32 |>.   8 |>.   9 |=. Intervals ~y~  |

|>.  36 |>.   9 |>.  10 |=. Intervals ~z~  |

|>.  40 |>.  10 |>.  11 |=. Cell Length ~x~   |/3. float32 |/3. cell length in angstrom |

|>.  44 |>.  11 |>.  12 |=. Cell Length ~y~   |

|>.  48 |>.  12 |>.  13 |=. Cell Length ~z~   |

|>.  52 |>.  13 |>.  14 |=. Cell Angle α  |/3. float32 |/3. cell angles in degrees |

|>.  56 |>.  14 |>.  15 |=. Cell Angle β   |

|>.  60 |>.  15 |>.  16 |=. Cell Angle γ  |

_...under construction..._