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Re: [ddlm-group] Interactions with methods
- To: Group finalising DDLm and associated dictionaries <ddlm-group@iucr.org>
- Subject: Re: [ddlm-group] Interactions with methods
- From: David Brown <idbrown@mcmaster.ca>
- Date: Fri, 11 Sep 2009 10:39:02 -0400
- In-Reply-To: <C6CFF1E3.11D8A%nick@csse.uwa.edu.au>
- References: <C6CFF1E3.11D8A%nick@csse.uwa.edu.au>
I agree with Nick that the questions I raised arise mostly at the
application level, and I am glad to see that he accepts that people
will use the methods however they see fit. I am glad that this point is made clear as it colours my thinking when preparing the dictionary. I am glad to have some guidelines to decide which methods should be included. I still wonder, though, whether it would be useful to include in the methods loop an item _methods_description which would be a short text description that could be used by an application to log the progress of a calculation. The problem is that the applcation has no way of knowing what it is calculating apart from the dataname of the object it is attempting to calculate. This could be picked up by the application to produce a message such as : 'Unable to calculate _refln.F_squared_calc using _refln.F_calc' This might be satisfactory for trouble shooting, but if the writer of the application wanted to put out a more user-friendly message, he might prefer to have available a description such as: 'Calculation of F(calc)^2 from F(calc) failed' using the item _methods_description 'Calculation of F(calc)^2 from F(calc)' This does not affect the structure of DDLm or the dictionaries, but does give the writer of an application another handle. David |
begin:vcard fn:I.David Brown n:Brown;I.David org:McMaster University;Brockhouse Institute for Materials Research adr:;;King St. W;Hamilton;Ontario;L8S 4M1;Canada email;internet:idbrown@mcmaster.ca title:Professor Emeritus tel;work:+905 525 9140 x 24710 tel;fax:+905 521 2773 version:2.1 end:vcard
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