Thursday, March 15, 2012

Planning for the LC/NACO Authority File for Under RDA

Get your comments in by April 15.
The PCC Acceptable Headings Implementation Task Group has prepared for comment a series of documents describing various aspects of the preparation of the LC/NACO Authority File for use under RDA. These documents replace, and greatly expand on, a set of documents made available earlier this year. Contact information for the task group is at the end of this message.

The documents are available for download from this page:

As before, there is a general document ("Phased implementation of RDA") that outlines the procedure that the task group currently assumes will be followed. This is followed by a separate document for each kind of change to be made or other category of work to be performed. All parties interested in the use of the LC/NACO Authority File under RDA are urgently requested to read all of these documents closely, and to pelt the task group with questions and suggestions. Comments on these documents should if possible be sent by April 15, 2012.

The task group would like to draw special attention to the document that describes the creation of 046 fields from subfield $d in personal name headings. To help everyone understand and comment on this procedure, the document is accompanied by a ZIP file that contains the results of a test program; the ZIP file also contains a document that describes how these results were obtained and how to go about evaluating them.

Comments on all of these documents will be gratefully received by the task group from all comers. Now that the date for Day 1 (March 31, 2013) has been set, the task group needs soon to set about establishing a more firm schedule for the various phases of this work, and concerning itself with other logical matters. As the task group goes about its business, the documents at the download site will be revised to reflect the group's current understanding.

The final document available from the download page describes a service that the task group is making available, to allow anyone to preview the effect of the RDA migration on one or more authority records. This document describes how you can send an e-mail message with 010s for one or more authority records you would like to preview, and receive a message back for each record showing how the migration will affect that record.

In the past two months, the task group has received suggestions for several new operations that ought to be, or could well be, performed during the preparation of the LC/NACO Authority File for use under RDA. These have all been incorporated into the current plan. Please, please, everyone: if you can think of anything that ought to be, or might be, done to the LC/NACO Authority File to make it more amenable for use under RDA, send a message to the task group. Do not limit yourself to things you think are possible (which will be the task group's job to figure out), but instead concern yourself with what you think ought to happen.

Monday, March 12, 2012

Map Scale

When trying to find scale on maps I've used the Natural Scale ruler, for years. OCLC users have an alternative, the CalcScale macro.
How it works: The macro presents a dialog box in which to enter the two numbers of the ' scale ratio (including decimals, if necessary) and their corresponding units of length. ' It then calculates and displays the representative fraction, putting the denominator on ' the clipboard so it can be pasted into the 034 field if desired. As it is designed to ' be used for scales on maps, the unit of length of the first number is only inches or ' centimeters (i.e., it is not a general-purpose unit converter).
Added on Pi Day. Just was alerted to another tool, Scale Finder.
Scale Finder converts linear scales to representative fractions and vice-versa. It is an invaluable tool for cataloguers and map users and is free to non-commercial users.