File Formats » History » Revision 6

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Jim Pulokas, 05/14/2013 02:21 PM

File Formats¶

...under construction...

byte offset	word offset (first=0)	word index (first=1)	field	type	description	CCP4	MRC-IMOD
0	0	1	N _x	int32	3-D size of data array, fastest changing first
4	1	2	N _y	int32
8	2	3	N _z	int32
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: 5: same as mode 0	additionally: 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	int32	number of the first element in each dimension, if this is a sub-array of another
20	5	6	Start _y	int32
24	6	7	Start _z	int32
28	7	8	Intervals _x	int32	number of grid intervals along each dimension
32	8	9	Intervals _y	int32
36	9	10	Intervals _z	int32
40	10	11	Cell Length _x	float32	cell length in angstrom
44	11	12	Cell Length _y	float32
48	12	13	Cell Length _z	float32
52	13	14	Cell Angle α	float32	cell angles in degrees		ignored by IMOD
56	14	15	Cell Angle β	float32
60	15	16	Cell Angle γ	float32
64	16	17	Column axis	int32	1 -> X 2 -> Y 3 -> Z
68	17	18	Row axis	int32
72	18	19	Section axis	int32

...under construction...

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