Data Functions

A set of convenient functions for working with and manipulating various types of data values.

Console

Console( message [,obj,text, ...objN,textN] ) -> returns: String

Logs a message in the messages window for debugging purposes. This function can be especially useful for inspecting variable values within a custom function at runtime. Unlike other functions and the return statement, Console() doesn't actually return a value; rather, it logs messages in a separate window for inspection purposes only. The successful use of this function has no computational impact on the evaluation of the expression.

Returns: String

Example

Prints the value of max for each iteration of the loop within the function

// The messages window will log the following:
// 'current item is: 10, but max = 10'
// 'current item is: 0, but max = 10'
// 'current item is: 84, but max = 84'
// 'current item is: 30, but max = 84'

// The expression evaluates to 84
function findMax(yourArray) {
  var max = -Infinity;
  for (var i in yourArray) {
    max = IIf(yourArray[i] > max, yourArray[i], max);
    Console('current item is: ' + i + ', but max = ' + max);
  }
  return max;
}
var myArray = [ 10, 0, 84, 30];
findMax(myArray);

Count

Count( arrayOrString ) -> returns: Number

Returns the number of items in an array or the number of characters in a string.

Returns: Number

Example

Returns 6

Count([12,21,32,44,58,63])

Returns 13

Count('Graham County')

Dictionary

Dictionary( name1, value1, [...nameN, compareN]? ) -> returns: Dictionary

Returns a new dictionary based on the provided arguments. The arguments are name/value pairs. e.g. dictionary('field1',val,'field2',val2,...).

Returns: Dictionary

Example

prints 3

var d = Dictionary('field1', 1, 'field2',2)
return d.field1 + d.field2

Distinct

Distinct( values ) -> returns: Array

Since version 1.1

Returns a set of distinct, or unique, values for a given array or list of values.

Returns: Array

Example

Returns [1,2,3,4,5]

Distinct([1,1,2,1,1,2,2,3,4,5])

Returns ['high','medium','low',0]

Distinct('high','medium','low',0,'high','high','low')

DomainCode

DomainCode( feature, fieldname, value, subtype? ) -> returns: String

Returns the code of an associated a domain description in a feature.

Returns: String

Example

prints the domain description for the field referenced.

DomainCode($feature, 'Enabled', 'True')

DomainName

DomainName( feature, fieldname, code?, subtype? ) -> returns: String

Returns the descriptive name for a domain code in a feature.

Returns: String

Example

prints the domain description for the referenced field

DomainName($feature, 'fieldname')

Feature

Feature( geometry, name1, value1, [... nameN, valueN]? ) -> returns: Feature

Creates a new feature. Alternatively, it can be called with object notation: Feature({geometry: {}, attributes: {...}}) or with two parameters: Feature(geometry, attributes);.

Returns: Feature

Example

Feature(pointGeometry, 'city_name', 'Spokane', 'population', 210721)

Create a feature from another feature.

var dict = { hello:10 }
var p = point({x:10, y:20, spatialreference:{wkid:102100}})
var ftr1 = Feature(p,dict)
var ftr2 = Feature(ftr1)

Create a feature from a JSON string.

var JSONString = "{'geometry':{'x':10,'y':20,'spatialReference':{'wkid':102100}},'attributes':{'hello':10}}"
var feature = Feature(JSONString)

First

First( inputArray ) -> returns: *

Returns the first element in an array.

Returns: *

Example

prints 'orange'

First(['orange', 'purple', 'gray'])

Guid

Guid( format? ) -> returns: String

Since version 1.3

Returns a random GUID as a string.

Returns: String

Example

Returns a value similar to {db894515-ed21-4df1-af67-36232256f59a}

Guid()

Returns a value similar to d00cf4dffb184caeb8ed105b2228c247

Guid('digits')

HasKey

HasKey( feature, key ) -> returns: Boolean

Indicates whether a dictionary or feature has the input key.

Returns: Boolean

Example

prints true

var d = Dictionary('Port Hope', 16214,  'Grafton', '<1000', 'Cobourg', 18519);
HasKey(d, 'Cobourg');

IndexOf

IndexOf( inputArray, item ) -> returns: Number

Returns the zero-based index location of the input item in an array. If item does not exist, then -1 is returned.

Returns: Number

Example

prints 2

var array = [1,2,3,4];
return indexof(array, 3);

NextSequenceValue

NextSequenceValue( inputSequenceName ) -> returns: Number

Since version 1.4

Profiles: Calculation

Returns the next sequence value from the database sequence specified. If inputSequenceName does not exist, the expression will error. This function is only valid in the calculation profile when used in attribute rules.

Returns: Number

Example

Returns a number with the next sequence value

NextSequenceValue('PipeIDSeq')

Number

Number( value, pattern? ) -> returns: Number

Parses the input value to a number.

Returns: Number

Example

Parses a number using a grouping separator appropriate for the local in which the expression is executed

returns 1365

Number('1,365', ',###')

Remove strings from number.

prints 10

Number('abc10def', 'abc##def')

Specify minimum digits past 0 as two and maximum digits past 0 as 4.

prints 10.456

Number('10.456','00.00##')

Specify minimum digits past 0 as two and maximum digits past 0 as 4. The left and right side of the function must match or NaN is returned.

prints NaN

Number('10.4','00.00##')

Indicate the size of the repeated group and the final group size of the input value.

prints 1212456

Number('12,12,456', ',##,###')

If there is a negative subpattern, it serves only to specify the negative prefix and suffix.

prints -1223345

Number('-12,23,345', ',##,###;-,##,###')

Divide by 100. Maximum of three decimal places can be input.

prints 0.9999

Number('99.99%', '#.##%')

Reverse

Reverse( inputArray ) -> returns: Array

Reverses the contents of the array in place.

Returns: Array

Example

returns ['grey', 'purple', 'orange']

Reverse(['orange', 'purple', 'grey'])

Sort

Sort( inputArray, comparator? ) -> returns: Array

Sorts an array by ASCII value. If all the items in the array are the same type, an appropriate sort function will be used. If they are different types, the items will be converted to strings. If the array contains objects, and no user defined function is provided, no sort will happen.

Returns: Array

Example

returns ['$', 1, 'A', 'a']

Sort([1, 'a', '$', 'A'])

Sort using a user defined function

returns '[{ 'AGE': 24, 'NAME': 'Emma' }, { 'AGE': 25, 'NAME': 'Sam' }, { 'AGE': 27, 'NAME': 'Bob' } ]'

var peopleArray = [{ 'NAME': 'Sam', 'AGE': 25 }, {'NAME': 'Bob', 'AGE': 27 },{ 'NAME': 'Emma', 'AGE': 24 }];
function compareAge(a,b){
if (a['AGE']<b['AGE'])
return -1;
if (a['AGE']>b['AGE'])
return 1;
return 0; }
return Sort(peopleArray, compareAge);

Text

Text( value, format? ) -> returns: String

Converts its argument into a string and optionally formats it. Returns null if it fails.

Returns: String

Example

Pad the number to the left of the decimal

prints '0123'

Text(123, '0000')

Restrict the number to the left of the decimal

prints '23'

Text(123, '00')

Group the number by thousands

prints '1,234'

Text(1234, '#,###')

Round the number to two decimal places

prints '12,345,678.12'

Text(12345678.123, '#,###.00')

Format number as currency

prints '$1,234.55'

Text(1234.55, '$#,###.00')

Round the number to two decimal places

prints '1.24'

Text(1.236, '#.00')

Maintain significant digits and group by thousands

prints '1,234.568'

Text(1234.5678, '#,##0.00#')

Format the number and format positive/negative - if there is a negative subpattern, it serves only to specify the negative prefix and suffix

prints 'Basement 2'

Text(-2, 'Floor #;Basement #')

prints 'Floor 2'

Text(2, 'Floor #;Basement #')

Multiply by 100 and format as percentage

prints '30%'

Text(0.3, '#%')

Format date and time

prints the date at the moment. eg 'Tuesday, October 25, 2016 @ 08:43:11'

Text(Now(), 'dddd, MMMM D, yyyy @ h:m:s')

Top

Top( inputArray, numElements ) -> returns: Array

Since version 1.3

Truncates the input array and returns the first given number of elements.

Returns: Array

Example

returns [ 43,32,19 ]

Top([ 43,32,19,0,3,55 ], 3)

TypeOf

TypeOf( value ) -> returns: String

Returns the type of the input value. Will return one of the following types: Array, Date, String, Boolean, Number, Dictionary, Feature, Point, Polygon, Polyline, Multipoint, Extent, Function, Unrecognized Type.

Returns: String

Example

prints 'Boolean'

TypeOf(true)

prints 'Date'

TypeOf(Now())