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diff --git a/source/text/scalc/05/empty_cells.xhp b/source/text/scalc/05/empty_cells.xhp new file mode 100644 index 0000000000..774afb4bc9 --- /dev/null +++ b/source/text/scalc/05/empty_cells.xhp @@ -0,0 +1,84 @@ +<?xml version="1.0" encoding="UTF-8"?> + + + +<!-- + *********************************************************************** + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************ + --> + + + <helpdocument version="1.0"> +<meta> +<topic id="textscalc05empty_cellsxml" indexer="include" status="PUBLISH"> +<title id="tit" xml-lang="en-US">Handling of Empty Cells</title> +<filename>/text/scalc/05/empty_cells.xhp</filename> +</topic> +</meta> +<body> +<bookmark xml-lang="en-US" branch="index" id="bm_id3146799"><bookmark_value>empty cells;handling of</bookmark_value> +</bookmark><comment>i86303</comment><paragraph role="heading" id="hd_id1502121" xml-lang="en-US" level="1" l10n="NEW"><variable id="empty_cells"><link href="text/scalc/05/empty_cells.xhp">Handling of Empty Cells</link> +</variable></paragraph> + +<paragraph role="paragraph" id="par_id8266853" xml-lang="en-US" l10n="NEW">In older versions of the software, empty cells were forced to numeric 0 in some contexts and to empty string in others, except in direct comparison where =A1=0 and =A1="" both resulted in TRUE if A1 was empty. Emptiness now is inherited until used, so both =VLOOKUP(...)=0 and =VLOOKUP(...)="" give TRUE if the lookup resulted in an empty cell being returned. </paragraph> +<paragraph role="paragraph" id="par_id2733542" xml-lang="en-US" l10n="NEW">A simple reference to an empty cell is still displayed as numeric 0 but is not necessarily of type numeric anymore, so also comparisons with the referencing cell work as expected. </paragraph> +<paragraph role="paragraph" id="par_id4238715" xml-lang="en-US" l10n="NEW">For the following examples, A1 contains a number, B1 is empty, C1 contains the reference to B1:</paragraph> +<paragraph role="code" id="par_id8277230" xml-lang="en-US" l10n="NEW">A1: 1 B1: <empty> C1: =B1 (displays 0)</paragraph> +<paragraph role="code" id="par_id4086428" xml-lang="en-US" l10n="NEW">=B1=0 => TRUE</paragraph> +<paragraph role="code" id="par_id9024628" xml-lang="en-US" l10n="NEW">=B1="" => TRUE</paragraph> +<paragraph role="code" id="par_id3067110" xml-lang="en-US" l10n="NEW">=C1=0 => TRUE</paragraph> +<paragraph role="code" id="par_id8841822" xml-lang="en-US" l10n="NEW">=C1="" => TRUE (previously was FALSE)</paragraph> +<paragraph role="code" id="par_id4077578" xml-lang="en-US" l10n="NEW">=ISNUMBER(B1) => FALSE</paragraph> +<paragraph role="code" id="par_id9094515" xml-lang="en-US" l10n="NEW">=ISNUMBER(C1) => FALSE (previously was TRUE)</paragraph> +<paragraph role="code" id="par_id396740" xml-lang="en-US" l10n="NEW">=ISNUMBER(VLOOKUP(1;A1:C1;2)) => FALSE (B1)</paragraph> +<paragraph role="code" id="par_id3859675" xml-lang="en-US" l10n="NEW">=ISNUMBER(VLOOKUP(1;A1:C1;3)) => FALSE (C1, previously was TRUE)</paragraph> +<paragraph role="code" id="par_id402233" xml-lang="en-US" l10n="NEW">=ISTEXT(B1) => FALSE</paragraph> +<paragraph role="code" id="par_id1623889" xml-lang="en-US" l10n="NEW">=ISTEXT(C1) => FALSE</paragraph> +<paragraph role="code" id="par_id7781914" xml-lang="en-US" l10n="NEW">=ISTEXT(VLOOKUP(1;A1:C1;2)) => FALSE (B1, previously was TRUE)</paragraph> +<paragraph role="code" id="par_id300912" xml-lang="en-US" l10n="NEW">=ISTEXT(VLOOKUP(1;A1:C1;3)) => FALSE (C1)</paragraph> +<paragraph role="code" id="par_id9534592" xml-lang="en-US" l10n="NEW">=ISBLANK(B1) => TRUE</paragraph> +<paragraph role="code" id="par_id4969328" xml-lang="en-US" l10n="NEW">=ISBLANK(C1) => FALSE</paragraph> +<paragraph role="code" id="par_id9635914" xml-lang="en-US" l10n="NEW">=ISBLANK(VLOOKUP(1;A1:C1;2)) => TRUE (B1, previously was FALSE)</paragraph> +<paragraph role="code" id="par_id2476577" xml-lang="en-US" l10n="NEW">=ISBLANK(VLOOKUP(1;A1:C1;3)) => FALSE (C1)</paragraph> +<paragraph role="note" id="par_id4217047" xml-lang="en-US" l10n="NEW">Note that Microsoft Excel behaves different and always returns a number as the result of a reference to an empty cell or a formula cell with the result of an empty cell. For example:</paragraph> +<paragraph role="code" id="par_id2629474" xml-lang="en-US" l10n="NEW">A1: <empty></paragraph> +<paragraph role="code" id="par_id8069704" xml-lang="en-US" l10n="NEW">B1: =A1 => displays 0, but is just a reference to an empty cell</paragraph> +<paragraph role="code" id="par_id4524674" xml-lang="en-US" l10n="NEW">=ISNUMBER(A1) => FALSE</paragraph> +<paragraph role="code" id="par_id4396801" xml-lang="en-US" l10n="NEW">=ISTEXT(A1) => FALSE</paragraph> +<paragraph role="code" id="par_id5293740" xml-lang="en-US" l10n="NEW">=A1=0 => TRUE</paragraph> +<paragraph role="code" id="par_id7623828" xml-lang="en-US" l10n="NEW">=A1="" => TRUE</paragraph> +<paragraph role="code" id="par_id2861720" xml-lang="en-US" l10n="NEW">=ISNUMBER(B1) => FALSE (MS-Excel: TRUE)</paragraph> +<paragraph role="code" id="par_id9604480" xml-lang="en-US" l10n="NEW">=ISTEXT(B1) => FALSE</paragraph> +<paragraph role="code" id="par_id2298959" xml-lang="en-US" l10n="NEW">=B1=0 => TRUE</paragraph> +<paragraph role="code" id="par_id4653767" xml-lang="en-US" l10n="NEW">=B1="" => TRUE (MS-Excel: FALSE)</paragraph> +<paragraph role="code" id="par_id8801538" xml-lang="en-US" l10n="NEW">C1: =VLOOKUP(...) with empty cell result => displays empty (MS-Excel: displays 0)</paragraph> +<paragraph role="code" id="par_id6746421" xml-lang="en-US" l10n="NEW">=ISNUMBER(VLOOKUP(...)) => FALSE</paragraph> +<paragraph role="code" id="par_id4876247" xml-lang="en-US" l10n="NEW">=ISTEXT(VLOOKUP(...)) => FALSE</paragraph> +<paragraph role="code" id="par_id7458723" xml-lang="en-US" l10n="NEW">=ISNUMBER(C1) => FALSE (MS-Excel: TRUE)</paragraph> +<paragraph role="code" id="par_id2753379" xml-lang="en-US" l10n="NEW">=ISTEXT(C1) => FALSE</paragraph> +</body> +</helpdocument> |