<div dir="ltr">Hi,<div><br></div><div>Reporting back on retrieving "raw" subfield information from MARC records:</div><div><br></div><div>When you need to retrieve specific subfields from a MARC record (e.g. to get an array from field 246 with separate subfields $a, $n and $p) it is important to use the option "pluck:1" with marc_map():</div><div><br></div><div>Input data:</div><div><p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "246",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "3",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "0",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "a",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Villa \" Palsais zirgs \"",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "n",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Lala nnn"</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ],</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "246",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "3",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "0",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "a",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Imperatora tabakdoze",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "p",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "LuLu ppp"</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ]</span></p></div><div><div><br></div></div><div>Without "pluck:1" = marc_map('246anp', f246_temp_1, split:1, nested_arrays:1) :</div><div><br></div><div><p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "f246_temp_1" : [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Villa \" Palsais zirgs \"",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Lala nnn"</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ],</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Imperatora tabakdoze",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "LuLu ppp"</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ]</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ]</span></p></div><div><br></div><div>Notice that you can not tell any more what information was in which subfield (both "Lala nnn" and "LuLu ppp" are 2nd elements of the respective arrays though these are values of two different subfields).</div><div><br></div><div>This can be fixed using "pluck:1" - but only in case if there are no repeated subfields:</div><div><br></div><div>marc_map('246anp', f246_temp_2, split:1, nested_arrays:1, pluck:1)<br></div><div><br></div><div><p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "f246_temp_2" : [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Villa \" Palsais zirgs \"",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Lala nnn",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> null</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ],</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> [</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "Imperatora tabakdoze",</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> null,</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> "LuLu ppp"</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ]</span></p> <p style="margin:0px;font-size:11px;line-height:normal;font-family:Menlo"><span style="font-variant-ligatures:no-common-ligatures"> ]</span></p></div><div> </div><div>Now you can tell (from the array position) what was the value of each subfield.</div><div><br></div><div>This is an important difference but it is not directly mentioned in the documentation. I would have missed it if not for Patrick's answer to trmurakami's question at <a href="http://librecat.org/catmandu/2013/06/21/catmandu-cheat-sheet.html">http://librecat.org/catmandu/2013/06/21/catmandu-cheat-sheet.html</a></div><div><br></div><div>Would it be possible to add this to the documentation?</div><div><br></div><div>Cheers,</div><div>Uldis</div><div><br></div><div><br></div><div><br></div><div><br></div></div>