File Formats - Inward continuation
Description
The inward continuation (.iwd) file
is essentially a matrix in row major order (i.e. all the elements of the
first row appear in sequence before the elements of the second row, and so
forth). The Prolog and header are ASCII, while the matrix itself consists
of double precision (i.e. 8 bytes per number) floating point numbers,
little-endian (Intel) IEEE 754-1985 64-bit format. For EMSE v4.2 and
below, minor revision 3 files were written and read. EMSE v5.0 and above
writes major revision 4 files, but can read both major revision 3 and 4.
In this document we will define major revision 3 and major revision 4
separately, though they are quite similar.
N.B. – Open as binary
In order to read these files properly, you
must open them as binary, as shown in the
example code for the inverse operator file.
Comments
Comment lines are not supported for this
file type.
Major Revision 4
Prolog
|
Name |
Format |
Description |
|
Magic number |
%x |
0x454D5345 |
|
Major revision |
%d |
4 |
|
Minor revision |
%d |
1 |
|
Type |
%x |
0x00000012 |
Table A-1
Header
The
header consists of the entries shown in Table A-2 (in mandatory sequence):
|
Name |
Format |
Description |
|
#rows |
%d |
Number of rows (inner skull vertices) |
|
#columns |
%d |
Number of columns( # data channels) |
Data
The
data arein row-wise ordering, i.e. all the elements of a row are stored as
successive 8-byte values before proceeding on to the next row.
Major Revision 3
Prolog
|
Name |
Format |
Description |
|
Major revision |
%d |
3 |
|
Type |
%x |
0x00000012 |
|
Minor revision |
%d |
1 |
Table A-3
Header
The
header is the same as in version 4 (see Table A-2).
Data
The
data arein row-wise ordering, i.e. all the elements of a row are stored as
successive 8-byte values before proceeding on to the next row.
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