File Formats » History » Revision 5
Revision 4 (Jim Pulokas, 05/09/2013 04:50 PM) → Revision 5/7 (Jim Pulokas, 05/14/2013 02:03 PM)
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 | additionally: also:
mode 5: same as mode 0 | | additionally: 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..._