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Add Dabatabase function "DAVERAGE" #9

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Add Dabatabase function "DAVERAGE" #9

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31c6367
Add Dabatabase function "DAVERAGE"
grasscrm Feb 16, 2014
2feb730
Add Database related functions
grasscrm Feb 17, 2014
5644003
Refine the format and add one test for function "DAVERAGE"
grasscrm Feb 17, 2014
401c587
Add function "DPRODUCT"
grasscrm Feb 18, 2014
7214ba5
Add demo code for function DPRODUCT
grasscrm Feb 18, 2014
483a59f
Add function "DSTDEV","DSTDEVP","DSUM","DVAR","DVARP"
grasscrm Feb 18, 2014
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309 changes: 309 additions & 0 deletions lib/formula.js
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Original file line number Diff line number Diff line change
Expand Up @@ -263,7 +263,316 @@
}
};

Formula.FINDFIELD = function(database, title) {
var index = null;
for (var i = 0; i < database.length; i++) {
if (database[i][0] === title) {
index = i;
break;
}
}

// Return error if the input field title is incorrect
if (index == null) {
return '#VALUE!';
}
return index;
};

Formula.FINDRESULTINDEX = function(database, criteria) {
var maxCriteriaLength = criteria[0].length;
for (var i = 1; i < criteria.length; i++) {
if (criteria[i].length > maxCriteriaLength) {
maxCriteriaLength = criteria[i].length;
}
}
var columnResultIndexes = [];
for (i = 1; i < maxCriteriaLength; i++) {
var rowResultIndexes = [];
for (var j = 0; j < criteria.length; j++) {
if (criteria[j].length < maxCriteriaLength) {
continue;
}
var criteriaTitle = criteria[j][0];
var criteriaIndex = Formula.FINDFIELD(database, criteriaTitle);
var criteriaValues = _.rest(database[criteriaIndex]);
var count = 0;
var singleResultIndexes = [];
for (var k = 0; k < criteriaValues.length; k++) {
if (eval(criteriaValues[k] + criteria[j][i])) {
singleResultIndexes[count++] = k;
}
}
rowResultIndexes[j] = singleResultIndexes;
}
columnResultIndexes[i - 1] = _.intersection.apply(_, rowResultIndexes);
}

var resultIndexes = _.union.apply(_, columnResultIndexes);
return resultIndexes;
};

// Database functions
Formula.DAVERAGE = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}

var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var sum = 0;
for (var i = 0; i < resultIndexes.length; i++) {
sum += targetFields[resultIndexes[i]];
}
var average = Formula.IF(resultIndexes.length === 0, "#DIV/0!", sum / resultIndexes.length);
return average;
};

Formula.DCOUNT = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
return Formula.COUNT(targetValues);
};

Formula.DCOUNTA = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
return Formula.COUNTA(targetValues);
};

Formula.DGET = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = 0;
// Return error if no record meets the criteria
if (resultIndexes.length === 0) {
return '#VALUE!';
}
// Returns the #NUM! error value because more than one record meets the
// criteria
if (resultIndexes.length > 1) {
return '#NUM!';
}

return targetFields[resultIndexes[0]];
};

Formula.DMAX = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var maxValue = targetFields[resultIndexes[0]];
for (var i = 1; i < resultIndexes.length; i++) {
if (maxValue < targetFields[resultIndexes[i]]) {
maxValue = targetFields[resultIndexes[i]];
}
}
return maxValue;
};

Formula.DMIN = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var minValue = targetFields[resultIndexes[0]];
for (var i = 1; i < resultIndexes.length; i++) {
if (minValue > targetFields[resultIndexes[i]]) {
minValue = targetFields[resultIndexes[i]];
}
}
return minValue;
};

Formula.DPRODUCT = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
targetValues = _.compact(targetValues);
var result = 1;
for (i = 0; i < targetValues.length; i++) {
result *= targetValues[i];
}
return result;
};

Formula.DSTDEV = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
targetValues = _.compact(targetValues);
return Formula.STDEVS(targetValues);
};

Formula.DSTDEVP = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
targetValues = _.compact(targetValues);
return Formula.STDEVP(targetValues);
};

Formula.DSUM = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
return Formula.SUM(targetValues);
};

Formula.DVAR = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
return Formula.VARS(targetValues);
};

Formula.DVARP = function(database, field, criteria) {
// Return error if field is not a number and not a string
if (isNaN(field) && (typeof field !== "string")) {
return '#VALUE!';
}
var resultIndexes = Formula.FINDRESULTINDEX(database, criteria);
var targetFields = [];
if (typeof field === "string") {
var index = Formula.FINDFIELD(database, field);
targetFields = _.rest(database[index]);
} else {
targetFields = _.rest(database[field]);
}
var targetValues = [];
for (var i = 0; i < resultIndexes.length; i++) {
targetValues[i] = targetFields[resultIndexes[i]];
}
return Formula.VARP(targetValues);
};

// Date functions

Formula.DATE = function (year, month, day) {
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14 changes: 14 additions & 0 deletions public/controller.js
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Expand Up @@ -51,6 +51,20 @@ function TestCases($scope) {
return (actual == expected || arraysIdentical(actual, expected) || bypass) ? 'icon-ok-sign text-success' : 'icon-warning-sign text-error';
}

// Database functions
$scope.DAVERAGE = Formula.DAVERAGE;
$scope.DCOUNT = Formula.DCOUNT;
$scope.DCOUNTA = Formula.DCOUNTA;
$scope.DGET = Formula.DGET;
$scope.DMAX = Formula.DMAX;
$scope.DMIN = Formula.DMIN;
$scope.DPRODUCT = Formula.DPRODUCT;
$scope.DSTDEV = Formula.DSTDEV;
$scope.DSTDEVP = Formula.DSTDEVP;
$scope.DSUM = Formula.DSUM;
$scope.DVAR = Formula.DVAR;
$scope.DVARP = Formula.DVARP;

// Date functions
$scope.DATE = Formula.DATE;
$scope.DATEVALUE = Formula.DATEVALUE;
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14 changes: 14 additions & 0 deletions public/demos.js
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@@ -1,4 +1,18 @@
var FORMULA_DEMOS = [
{"type": "database", "tests": [
{"function": "DAVERAGE", "call": "DAVERAGE([['Height',18,12,13,14,9,8],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>13']])", "result": 12},
{"function": "DCOUNT", "call": "DCOUNT([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 2},
{"function": "DCOUNTA", "call": "DCOUNTA([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',null,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 1},
{"function": "DGET", "call": "DGET([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>16']])", "result": 14},
{"function": "DMAX", "call": "DMAX([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 14},
{"function": "DMIN", "call": "DMIN([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 10},
{"function": "DPRODUCT", "call": "DPRODUCT([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 140},
{"function": "DSTDEV", "call": "DSTDEV([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10']])", "result": 2.8635642126552705},
{"function": "DSTDEVP", "call": "DSTDEVP([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10']])", "result": 2.5612496949731396},
{"function": "DSUM", "call": "DSUM([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 24},
{"function": "DVAR", "call": "DVAR([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 8},
{"function": "DVARP", "call": "DVARP([['Height',18,12,13,14,9,12],['Age',20,12,14,16,8,11],['Yield',14,10,9,10,8,6]], 'Yield', [['Height','>10'],['Age','>14']])", "result": 4}
]},
{"type": "date", "tests": [
{"function": "DATE", "call": "DATE(2008, 7, 8)", "result": "Tue Jul 08 2008 00:00:00 GMT-0700 (PDT)"},
{"function": "DATEVALUE", "call": "DATEVALUE('8/22/2011')", "result": "Mon Aug 22 2011 00:00:00 GMT-0700 (PDT)"},
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2 changes: 1 addition & 1 deletion public/index.html
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Expand Up @@ -87,7 +87,7 @@ <h2>Function types</h2>
</thead>
<tbody>
<tr><td>Compatibility functions</td><td>Planned</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306706">Excel</a></td></tr>
<tr><td>Database functions</td><td>Planned</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306708">Excel</a></td></tr>
<tr><td><a href="#database">Database functions</a></td><td>Started</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306708">Excel</a></td></tr>
<tr><td><a href="#date">Date and time functions</a></td><td>Implemented</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306709">Excel</a></td></tr>
<tr><td><a href="#engineering">Engineering functions</a></td><td>Implemented</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306710">Excel</a></td></tr>
<tr><td><a href="#financial">Financial functions</a></td><td>Started</td><td><a href="http://office.microsoft.com/en-us/excel-help/excel-functions-by-category-HA102752955.aspx#_Toc309306711">Excel</a></td></tr>
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