[ccp4bb] Fast,medium,slow axis do not match

2010-06-26 Thread Hailiang Zhang
Hi there, I was generating the atomic mask using ccpr-sfall, and generating real maps using ccp4-fft, and then ccp4-overlap these maps to calculate the cc values. However, ccp4-overlapmap frequently complaints that the "Fast,medium,slow axis do not match" for these maps. Following are the script I

Re: [ccp4bb] DATA COLLECTION?

2010-06-26 Thread Robert Sweet
On Sat, 26 Jun 2010, Sudhir Kumar wrote: Hi ALL I don't know if I'm asking the right question: What are Remote, Inflection and peak values for X ray data collection? Sorry if question is wrong or under-status. I wouldn't say it's under-status, and it's certainly a "correct" question. The answ

Re: [ccp4bb] DATA COLLECTION?

2010-06-26 Thread Poul Nissen
Dear Sudhir, Fair enough to ask, but I think your question has understatus for the ccp4bb, indeed - you will find information of basic matters of protein crystallography in any text book on the subject - including also the nature of anomalous scattering and how it is exploited by data collectio

Re: [ccp4bb] DATA COLLECTION?

2010-06-26 Thread Tim Gruene
Dear Sudhir, these terms refer to a MAD (multi-wavlength anomalous dispersion) experiment, where you collect a data set each at different wavelengths from one crystal. The actual wavlengths depend on the atom type you want to exploit in order to carry out phasing, and they are usually determined