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SpreadJS支持表中的结构化参考公式。
结构化引用公式使用关键字和表的列名来引用表中的单元格区域。
下图说明了结构化参考的组件。 此公式将总销售额和税额相加。
用户可以使用特殊项目来引用表的各个区域,以便更轻松地在公式中使用。 下表列出了用户可以在结构化引用中使用的特殊项目说明符:
特殊项目 | 示例 | 参考 | 单元格区域 |
---|---|---|---|
#All | =DeptSales[#All] | Entire table including column headers, data, and totals | A1:E8 |
#Data | =DeptSales[#Data] | Data | A2:E7 |
#Headers | =DeptSales[#Headers] | Header row | A1:E1 |
#Totals | =DeptSales[#Totals] | Total row. Returns null if none exists | A8:E8 |
#This Row | =DeptSales[#This Row] | Portion of the columns in the current row | A5:E5 (current row is 5) |
“ #This Row”项可以缩写为“ @”。 例如,= DeptSales [#This Row]与= DeptSales [@]相同。
“ #Data”项可以与“ #Headers”或“ #Totals”组合使用。 下表列出了示例:
特殊项目 | 示例 | 参考 | 单元格区域 |
---|---|---|---|
#Headers and #Data | =DeptSales[[#Headers], [#Data]] | Column headers and data | A1:E7 |
#Data and #Totals | =DeptSales[[#Data], [#Totals]] | Data and the total row | A2:E8 |
如果未指定特殊项目,则将其视为数据,如下表所示:
特殊项目 | 示例 | 参考 | 单元格区域 |
---|---|---|---|
None | =DeptSales[] or =DeptSales | Data | A2:E7 |
列说明符表示对整个数据列的引用,但列标题和总数除外。 下表列出了列说明符:
列说明符 | 示例 | 参考 | 单元格区域 |
---|---|---|---|
Single column | =DeptSales[SaleAmt] | "SaleAmt" column in data | C2:C7 |
Column range | =DeptSales[[SaleAmt]:[TaxAmt]] | Range of column "SaleAmt" to column "TaxAmt" in data | C2:E7 |
None | =DeptSales[[#Data]] | All columns in data | A2:E8 |
所有表,列和特殊项目说明符都必须放在匹配的括号([])中。 包含其他说明符的说明符需要外部匹配括号来包围其他说明符的内部匹配括号。 如果策略之间存在冲突,则优先级从最高到最低。
以下规则适用于方括号:
以下一般规则也适用:
您可以使用 setColumnDataFormula 和 setColumnFormula 方法。 您还可以在表格区域之外的公式中引用表格数据。 例如,activeSheet.getCell(7,1).formula(“ SUM(Table1 [SubTotal])”);。 设置的最后一个公式在列公式和单元格公式之间具有优先权。
公式中的列说明符不适用于页眉和页脚中的单元格。
公式中的列说明符不适用于页眉和页脚中的单元格。
下面的示例创建一个表格,并使用结构化参考公式创建总计。
activeSheet.tables.add("Table1", 0, 0, 4, 3, GC.Spread.Sheets.Tables.TableThemes.dark1);
activeSheet.getCell(0,0).text("Value1");
activeSheet.getCell(0,1).text("Value2");
activeSheet.getCell(0,2).text("SubTotal");
activeSheet.getCell(1,0).text("1");
activeSheet.getCell(2,0).text("2");
activeSheet.getCell(3,0).text("3");
activeSheet.getCell(1,1).text("5");
activeSheet.getCell(2,1).text("5");
activeSheet.getCell(3,1).text("5");
var sTable = activeSheet.tables.findByName("Table1").setColumnDataFormula(2, "=[Value1]*[Value2]");
sTable.showFooter(true);
//设置页脚值
sTable.setColumnValue(0, "Total");
sTable.setColumnFormula(2, "SUM(Table1[SubTotal])");
activeSheet.getColumn(0).width(80);
activeSheet.getColumn(1).width(80);
activeSheet.getColumn(2).width(80);
//activeSheet.getCell(7,1).formula("SUM(Table1[SubTotal])");