An array formula can do calculations on rows and columns of cells where you might otherwise need to use several formulas. For example:
You can use an array formula to help search range items. For example:
An array formula can help collect statistics information from related range items. For example:
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 3 });
initSpread(spread);
};
function initSpread(spread) {
var spreadNS = GC.Spread.Sheets;
var fbx = new spreadNS.FormulaTextBox.FormulaTextBox(document.getElementById('formulaBar'));
fbx.workbook(spread);
var oldArrayRange;
var arrayFormulaStyle = new spreadNS.Style();
arrayFormulaStyle.backColor = "#E0E0FF";
for (var i = 0; i < spread.sheets.length; i++) {
(function (sheet1) {
sheet1.bind(spreadNS.Events.SelectionChanged, null, function (args) {
sheet1.suspendPaint();
var formulaBar = document.getElementById("formulaBar");
var formulaInfo = sheet1.getFormulaInformation(sheet1.getActiveRowIndex(), sheet1.getActiveColumnIndex());
if (oldArrayRange && (!formulaInfo || !formulaInfo.isArrayFormula || !formulaInfo.baseRange.equals(oldArrayRange))) {
for (var r = oldArrayRange.row; r < oldArrayRange.row + oldArrayRange.rowCount; r++) {
for (var c = oldArrayRange.col; c < oldArrayRange.col + oldArrayRange.colCount; c++) {
sheet1.setStyle(r, c, null);
}
}
oldArrayRange = null;
}
if (formulaInfo && formulaInfo.hasFormula) {
var formula = "=" + formulaInfo.formula;
formula = formulaInfo.isArrayFormula ? "{" + formula + "}" : formula;
formulaBar.value=formula;
if (formulaInfo.isArrayFormula && !formulaInfo.baseRange.equals(oldArrayRange)) {
oldArrayRange = formulaInfo.baseRange;
for (var r = oldArrayRange.row; r < oldArrayRange.row + oldArrayRange.rowCount; r++) {
for (var c = oldArrayRange.col; c < oldArrayRange.col + oldArrayRange.colCount; c++) {
sheet1.setStyle(r, c, arrayFormulaStyle);
}
}
}
}
else {
formulaBar.value=sheet1.getValue(sheet1.getActiveRowIndex(), sheet1.getActiveColumnIndex());
}
sheet1.resumePaint();
});
})(spread.sheets[i]);
}
setCalculation(spread.sheets[0]);
setSearch(spread.sheets[1]);
setStatistics(spread.sheets[2]);
}
function setCalculation(sheet) {
sheet.name("Calculation");
sheet.setArray(0, 0, [
["", "Match", "Physical", "Chemistry"],
["Alice", 97, 61, 53],
["Jon", 65, 76, 65],
["Bob", 55, 70, 64],
["Jack", 89, 77, 73],
["Tom", 83, 62, 78],
["Robert", 86, 98, 57]
]);
sheet.addSpan(0, 5, 1, 4);
sheet.setValue(0, 5, "Calculate every body's total score");
sheet.setArrayFormula(1, 5, 6, 1, "=SUBTOTAL(9,OFFSET($B$2,ROW($A$1:$A$6)-ROW($A$1),,1,3))");
}
function setSearch(sheet) {
sheet.name("Search");
sheet.setArray(0, 0, [
["apple", "apple"],
["banana", "strawberry"],
["pea", "potato"],
["tomato", "potato"],
["potato", "dumpling"],
["cake"],
["noodle"],
["rice"],
["soup"]
]);
sheet.addSpan(0, 3, 1, 8);
sheet.setValue(0, 3, "Find out the first value on B1:B5 that does not contains on A1:A9");
sheet.setColumnWidth(3, 80);
sheet.addSpan(2, 3, 1, 2);
sheet.setValue(2, 3, "ArrayFormula Result:");
sheet.setArrayFormula(2, 5, 1, 1, "=INDEX(B1:B5,MATCH(TRUE,ISNA(MATCH(B1:B5,A1:A9,0)),0))");
sheet.getCell(2, 5).backColor("Accent 5 80");
sheet.addSpan(3, 3, 1, 2);
sheet.setValue(3, 3, "NormalFormula Result:");
sheet.setFormula(3, 5, "=INDEX(B1:B5,MATCH(TRUE,ISNA(MATCH(B1:B5,A1:A9,0)),0))");
sheet.getCell(3, 5).backColor("Accent 6 80");
}
function setStatistics(sheet) {
sheet.name("Statistics");
sheet.options.allowCellOverflow = true;
sheet.setArray(0, 0, [
["Product", "Salesman", "Units Sold"],
["Fax", "Brown", 1],
["Phone", "Smith", 10],
["Fax", "Jones", 20],
["Fax", "Smith", 30],
["Phone", "Jones", 40],
["PC", "Smith", 50],
["Fax", "Brown", 60],
["Phone", "Davis", 70],
["PC", "Jones", 80]
]);
sheet.setValue(1, 5, "Summing Sales: Faxes Sold By Brown");
sheet.setArrayFormula(2, 5, 1, 1, "=SUM((A2:A10=\"Fax\")*(B2:B10=\"Brown\")*(C2:C10))");
sheet.setValue(4, 5, "Logical AND (Faxes And Brown)");
sheet.setArrayFormula(5, 5, 1, 1, "=SUM((A2:A10=\"Fax\")*(B2:B10=\"Brown\"))");
sheet.setValue(7, 5, "Logical OR (Faxes Or Jones)");
sheet.setArrayFormula(8, 5, 1, 1, "=SUM(IF((A2:A10=\"Fax\")+(B2:B10=\"Jones\"),1,0))");
sheet.setValue(10, 5, "Logical XOR (Fax Or Jones but not both)");
sheet.setArrayFormula(11, 5, 1, 1, "=SUM(IF(MOD((A2:A10=\"Fax\")+(B2:B10=\"Jones\"),2),1,0))");
sheet.setValue(13, 5, "Logical AND (All Sales Except Fax And Jones)");
sheet.setArrayFormula(14, 5, 1, 1, "=SUM(IF((A2:A10=\"Fax\")+(B2:B10=\"Jones\")<>2,1,0))");
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/en/purejs/node_modules/@mescius/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-spreadsheets" ></div>
<div class="options-container">
<textarea id="formulaBar" rows="10" readonly></textarea>
</div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.sample-spreadsheets {
width: calc(100% - 280px);
height: 100%;
overflow: hidden;
float: left;
}
.options-container {
float: right;
width: 280px;
padding: 12px;
height: 100%;
box-sizing: border-box;
background: #fbfbfb;
overflow: auto;
}
textarea {
width: 100%;
box-sizing: border-box;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
