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)