Hi Pascal,
This document makes an attempt at an explanation, but in a somewhat obtuse
way: http://conventions.cnb.uam.es/References/maplib.html. The important
point is that the machine stamp is 4 bytes that are specific for the
architecture that wrote the file. For little endian hardware the stamp
On 09/15/2011 09:30 AM, Pascal wrote:
I am looking at the specifications of the ccp4 map file format and I am
confused with the number of columns and the number of intervals.
Thanks for all the answers. I can almost write a map file.
Only one problem remain: what is the machine stamp (ele
Hi Pascal,
The map data is a three dimensional array with dimensions [NC, NR, NS]. On
its own, this gives you no information about the grid pitch in the three
(crystallographic, not Cartesian) directions, which is determined in
fractional coordinates by the number of intervals. That is, along the
typo: MAPC, MAPR and MAPS are elements 17-19 of the header, but you can see
that anyway from the specification.
Cheers
-- David
On 15 September 2011 09:51, David Waterman wrote:
> Hi Pascal,
>
> The map data is a three dimensional array with dimensions [NC, NR, NS]. On
> its own, this gives yo
Hi,
I am looking at the specifications of the ccp4 map file format and I am
confused with the number of columns and the number of intervals.
I assume that the number of columns is the grid size but what is the
number of intervals (elements 8-9 in the header)?
Regards,
Pascal
