MAPTONA4 (CCP4: Supported Program)
NAME
maptona4
- Convert binary map file to and from na4 ascii format
SYNOPSIS
maptona4 mapin
foo.map
mapout
foo.na4
maptona4 mapin
foo.na4
mapout
foo.map
DESCRIPTION
Input files
- MAPIN (stream 1)
-
input map, formatted (ascii) or binary CCP4 format. The
program reads the first line of the map to determine
automatically whether the file is formatted or not.
- SYMOP (stream 4)
-
symmetry library (doesn't normally need to be specified)
Output file:
- MAPOUT(stream 2)
-
output map: this will be formatted if the input map is
binary and vice versa.
No Input is required, other than the command line, and input file
assignments.
ACCURACY
The program gets index values from the ranges for the density
values for REAL to CHARACTER*4 inter-conversion, with REALs
converted to INTEGER in the range 0 to 2**24-1 (Negative numbers
are converted to 2's complement.) Then it converts INTEGER to
CHAR*4 using 64-character translation table.
After an ascii readable header is output to the foo.na4 file the
map data is stored as characters. A sample of an output file is
given below:
MAPTONA4 HEADER
TITLE
ISOMORPHOUS DIFFERENCE PATTERSON FOR TEST DERIVATIVE 3.0A.
AXIS Z X Y
GRID 36 64 48
XYZLIM 0 18 0 32 0 47
SPACEGROUP 4
MODE 2
CELL 35.720 62.990 44.760 90.000 102.400 90.000
RHOLIM -930.269 7562.85 1.75892 133.812
INDXR4 0 10
END HEADER
SECTION 0
RWhWJ22J5OF4xfIBybD004hXzWQIzTmXzzyKznCQzmSO0dcw15Z30ORyzfn+zess03FS0Jeb0D0szlqt
zZc0039e0X290SXD0GRI0SXE0X29039ezZc0zlqt0D0s0Jea03FSzesszfn+0ORy15Z30dcwzmSOznCQ
zzyKzTmXzWQI04hWybD0xfIB5OF4J22I
HonnElom4qWlxB-Uxjd9zscIzl9KzQx4zyP308ij09XB0r8C1Okh0rq1zy8AzjOj07ZY0VAT0Vhg07hE
zmXZzw0F0+lh04nF00iA0P980iDZ0FlVzeVczfaq01L-02HezmoNzZ3AzVBjzsLK0NVC072ezE1QzInp
08Kg02SQzaxv04fLzT5wxIhIziUY-IcH
The maximum error is relative to the largest absolute value in the column
so in general you will have an error of about 1 in 10**7, which is not
likely to cause any problems.
EXAMPLES
maptona4 mapin mir.map mapout mir.na4
maptona4 mapin mir.na4 mapout new_mir.map
AUTHOR
Phil Evans MRC-LMB (original mapexchange program)
Ian Tickle Birkbeck College (na4 modifications)
SEE ALSO
Other map/mask conversion programs:
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