ReportMagic

[List.SelectColumns:]

Selects one or more columns from a list.

Compatibility

The macro can be used in all input document types and in Report Studio.

Parameters (121)

Grouped View

Mandatory (1)1 additional

Parameter	Type	Purpose	Options	Default
columnIndices	List<Int32>	The zero-indexed columns to select, separated by a semi-colon e.g. 1;2;3.	N/A	N/A

Additional (1)

Parameter	Type	Purpose	Options	Default
values	List<Object>	The list of input values. In Legacy Mode, they should be split by the delimiter character.	N/A	N/A

Behaviour (10)

Parameter	Type	Presence	Purpose	Options	Default
calculate	String	Optional	Post processing formula. Use {value} for the macro output, e.g. {value}/1024.	N/A	N/A
errorOnOverflow	Boolean	Optional	Should NCalc expression evaluation throw error on Overflow	true false	true
fatalIf	String	Optional	The macro is considered 'fatal' if the expression evaluates to true. Use 'value' as the macro output in the expression.	N/A	N/A
hidden	Boolean	Optional	Whether to hide the macro output.	true false	false
if	String	Optional	The condition that must be true in order for the macro to be executed/evaluated. Must either evaluate to true or false, for example: "3+5=8" or "contains('abcd', 'z').	N/A	true
mode	MacroMode	Optional	The mode in which variables are stored. In the legacy mode (default for Schedules), the variable created is a string and formatted. In the normal mode (default for Report Studio), the output variable is stored as a strongly-typed theObject, e.g. an Int32 or a List etc., rather than a formatted string.	Legacy Normal	Legacy
obfuscation	ObfuscationType	Optional	Obfuscation type. Use obfuscation to write reports where sensitive data is hidden. When used, ReportMagic guarantees that the same input string will map to the same output string for the whole of the report (but the next time the report runs, it will most likely map to a different value). If you use obfuscation, the property in your macro will not show up and instead, you will see a fake item of the obfuscation type chosen.	None UkTown DeviceName Company IpAddress PrivateIpAddress	None
redact	Boolean	Optional	Whether substituted variables are hidden from macro results (and the word 'REDACTED' will appear in progress screens and elsewhere in the web UI).	true false	false
trimWhitespace	Boolean	Optional	Whether to trim leading and trailing whitespace on input items. The trim operation is done BEFORE other operators such as selecting distinct items or sorting.	true false	false
warning	String	Optional	If specified, adds a warning message for this macro. This is processed as an NCalc, and the warning message will ALWAYS be present and will be the value of the evaluated NCalc expression.	N/A	N/A

Colours (6)

Parameter	Type	Presence	Purpose	Options	Default
colorTableCell	Boolean	Optional	Whether to color table cells if thresholds are breached, rather than color the text.	true false	true
fontBackgroundColor	Color	Optional	The font background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
fontColor	Color	Optional	The font color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
normalFontBackgroundColor	Color	Optional	The normal font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
normalFontColor	Color	Optional	The normal font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
normalTableCellBackgroundColor	Color	Optional	The normal table cell background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A

Formatting (5)

Parameter	Type	Presence	Purpose	Options	Default
fontBold	Boolean	Optional	Change the font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
fontSize	Double	Optional	Change the font size in points. If omitted, no change is made.	From 2 to 200	N/A
format	String	Optional	The formatting to use for numbers. You can also specify 'format=string' to force numbers to be treated as strings.	N/A	N/A
normalFontBold	Boolean	Optional	Change the normal font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
normalFontSize	Double	Optional	Change the normal font size in points. If omitted, no change is made.	From 2 to 200	N/A

Conditional Formatting (69)

Parameter	Type	Presence	Purpose	Options	Default
criticalAfter	DateTimeOffset	Optional	The macro is considered 'critical' if the output is after this DateTime UTC.	N/A	N/A
criticalBefore	DateTimeOffset	Optional	The macro is considered 'critical' if the output is before this DateTime UTC.	N/A	N/A
criticalEq	String	Optional	The macro is considered 'critical' if the output is equal to this value.	N/A	N/A
criticalFontBackgroundColor	Color	Optional	The critical font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
criticalFontBold	Boolean	Optional	Change the font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
criticalFontColor	Color	Optional	The critical font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
criticalFontSize	Double	Optional	Change the critical font size in points. If omitted, no change is made.	From 2 to 200	N/A
criticalGe	String	Optional	The macro is considered 'critical' if the output is greater than or equal to this value.	N/A	N/A
criticalGt	String	Optional	The macro is considered 'critical' if the output is greater than this value.	N/A	N/A
criticalIf	String	Optional	The macro is considered 'critical' if the expression evaluates to true. Use 'value' as the macro output in the expression.	N/A	N/A
criticalLe	String	Optional	The macro is considered 'critical' if the output is less than or equal to this value.	N/A	N/A
criticalLt	String	Optional	The macro is considered 'critical' if the output is less than this value.	N/A	N/A
criticalNe	String	Optional	The macro is considered 'critical' if the output is not equal to this value.	N/A	N/A
criticalTableCellBackgroundColor	Color	Optional	The critical table cell background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
errorAfter	DateTimeOffset	Optional	The macro is considered 'error' if the output is after this DateTime UTC.	N/A	N/A
errorBefore	DateTimeOffset	Optional	The macro is considered 'error' if the output is before this DateTime UTC.	N/A	N/A
errorEq	String	Optional	The macro is considered 'error' if the output is equal to this value.	N/A	N/A
errorFontBackgroundColor	Color	Optional	The error font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
errorFontBold	Boolean	Optional	Change the error font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
errorFontColor	Color	Optional	The error font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
errorFontSize	Double	Optional	Change the error font size in points. If omitted, no change is made.	From 2 to 200	N/A
errorGe	String	Optional	The macro is considered 'error' if the output is greater than or equal to this value.	N/A	N/A
errorGt	String	Optional	The macro is considered 'error' if the output is greater than this value.	N/A	N/A
errorIf	String	Optional	The macro is considered 'error' if the expression evaluates to true. Use 'value' as the macro output in the expression.	N/A	N/A
errorLe	String	Optional	The macro is considered 'error' if the output is less than or equal to this value.	N/A	N/A
errorLt	String	Optional	The macro is considered 'error' if the output is less than this value.	N/A	N/A
errorNe	String	Optional	The macro is considered 'error' if the output is not equal to this value.	N/A	N/A
errorTableCellBackgroundColor	Color	Optional	The error table cell background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
fatalAfter	DateTimeOffset	Optional	The macro is considered 'fatal' if the output is after this DateTime UTC.	N/A	N/A
fatalBefore	DateTimeOffset	Optional	The macro is considered 'fatal' if the output is before this DateTime UTC.	N/A	N/A
fatalEq	String	Optional	The macro is considered 'fatal' if the output is equal to this value.	N/A	N/A
fatalFontBackgroundColor	Color	Optional	The fatal font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
fatalFontBold	Boolean	Optional	Change the fatal font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
fatalFontColor	Color	Optional	The fatal font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
fatalFontSize	Double	Optional	Change the fatal font size in points. If omitted, no change is made.	From 2 to 200	N/A
fatalGe	String	Optional	The macro is considered 'fatal' if the output is greater than or equal to this value.	N/A	N/A
fatalGt	String	Optional	The macro is considered 'fatal' if the output is greater than this value.	N/A	N/A
fatalLe	String	Optional	The macro is considered 'fatal' if the output is less than or equal to this value.	N/A	N/A
fatalLt	String	Optional	The macro is considered 'fatal' if the output is less than this value.	N/A	N/A
fatalNe	String	Optional	The macro is considered 'fatal' if the output is not equal to this value.	N/A	N/A
fatalTableCellBackgroundColor	Color	Optional	The fatal table cell background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
infoAfter	DateTimeOffset	Optional	The macro is considered 'info' if the output is after this DateTime UTC.	N/A	N/A
infoBefore	DateTimeOffset	Optional	The macro is considered 'info' if the output is before this DateTime UTC.	N/A	N/A
infoEq	String	Optional	The macro is considered 'info' if the output is equal to this value.	N/A	N/A
infoFontBackgroundColor	Color	Optional	The info font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
infoFontBold	Boolean	Optional	Change the info font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
infoFontColor	Color	Optional	The info font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
infoFontSize	Double	Optional	Change the info font size in points. If omitted, no change is made.	From 2 to 200	N/A
infoGe	String	Optional	The macro is considered 'info' if the output is greater than or equal to this value.	N/A	N/A
infoGt	String	Optional	The macro is considered 'info' if the output is greater than this value.	N/A	N/A
infoIf	String	Optional	The macro is considered 'info' if the expression evaluates to true. Use 'value' as the macro output in the expression.	N/A	N/A
infoLe	String	Optional	The macro is considered 'info' if the output is less than or equal to this value.	N/A	N/A
infoLt	String	Optional	The macro is considered 'info' if the output is less than this value.	N/A	N/A
infoNe	String	Optional	The macro is considered 'info' if the output is not equal to this value.	N/A	N/A
infoTableCellBackgroundColor	Color	Optional	The info table cell background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
warningAfter	DateTimeOffset	Optional	The macro is considered 'warning' if the output is after this DateTime UTC.	N/A	N/A
warningBefore	DateTimeOffset	Optional	The macro is considered 'warning' if the output is before this DateTime UTC.	N/A	N/A
warningEq	String	Optional	The macro is considered 'warning' if the output is equal to this value.	N/A	N/A
warningFontBackgroundColor	Color	Optional	The warning font background color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
warningFontBold	Boolean	Optional	Change the warning font weight (true=strong, false=normal). If omitted, no change is made.	true false	N/A
warningFontColor	Color	Optional	The warning font color to use. If omitted, no change is made.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A
warningFontSize	Double	Optional	Change the warning font size in points. If omitted, no change is made.	From 2 to 200	N/A
warningGe	String	Optional	The macro is considered 'warning' if the output is greater than or equal to this value.	N/A	N/A
warningGt	String	Optional	The macro is considered 'warning' if the output is greater than this value.	N/A	N/A
warningIf	String	Optional	The macro is considered 'warning' if the expression evaluates to true. Use 'value' as the macro output in the expression.	N/A	N/A
warningLe	String	Optional	The macro is considered 'warning' if the output is less than or equal to this value.	N/A	N/A
warningLt	String	Optional	The macro is considered 'warning' if the output is less than this value.	N/A	N/A
warningNe	String	Optional	The macro is considered 'warning' if the output is not equal to this value.	N/A	N/A
warningTableCellBackgroundColor	Color	Optional	The warning table cell background color to use.	A named color or an HTML-encoded color .Note that 'transparent' is a valid color that you can use in any macro parameter that expects a color.	N/A

Filtering & Sorting (8)2 additional

Parameter	Type	Presence	Purpose	Options	Default
comparisons	List<String>	Optional	In 'normal' mode only, the comparisons that are jsonPaths. For multiple items, separate by a semi-colon e.g. property1;property2;...	N/A	N/A
condition	String	Optional	The condition that must be true, using 'value'.	N/A	N/A
orderByIndices	List<Int32>	Optional	The semicolon-separated ordered list of columns to order by. The first is 0. e.g. 0;2;1	N/A	N/A
orderDirection	List<String>	Optional	The semicolon-separated order directions. Each must be one of: Ascending, Asc, Descending or Desc.	N/A	None
skip	Int32	Optional	The number of items AFTER the sort to skip.	N/A	0
sortTypes	List<String>	Optional	The semicolon-separated sort types. Each must be one of Alphanumeric, Numeric or Auto. The default (Auto) will attempt a numeric sort if all the values are numeric, otherwise falls back to alphanumeric.	N/A	Auto
stringListSortType	StringListSortType	Optional	The sort method to use. This can be used to adjust the sort order used by the system.	OrdinalIgnoreCase Ordinal InvariantCulture InvariantCultureIgnoreCase	OrdinalIgnoreCase
take	Int32	Optional	The number of items AFTER the sort to take.	N/A	2147483647

Additional (2)

Parameter	Type	Presence	Purpose	Options	Default
includeWhitespaceItems	Boolean	Optional	Whether to include whitespace items.	true false	true
selectDistinct	Boolean	Optional	Whether to exclude duplicates.	true false	false

Output (1)9 additional

Parameter	Type	Presence	Purpose	Options	Default
indexDelimiter	Char	Optional	The index delimiter.	N/A	^

Additional (9)

Parameter	Type	Presence	Purpose	Options	Default
delimiter	Char	Optional	The delimiter character to delimit text-based input lists (e.g. 1;2;3;4). When this parameter is set and 'listDelimiter' is NOT set, this acts as both the input and output list delimiter.	N/A	;
failureText	String	Optional	The text to display should the macro fail to execute. Note that a poorly-specified macro (e.g. omitting mandatory parameters) will still result in an error message.	N/A	N/A
failureVariable	String	Optional	The name of a variable to create should the macro fail to execute. The variable will be a text variable, and will contain either the failure text (only if the failureText parameter is set), otherwise it will contain the exception / failure message.	N/A	N/A
listDelimiter	Char	Optional	In Legacy Mode, the delimiter to use between multiple items in the output (in the variable and in the report). In Normal Mode, the delimiter has no effect on the variable, just the output to the report.	N/A	;
outputListsAsJarray Normal mode	Boolean	Optional	Any macros that output lists can optionally (in Normal mode) output a jArray instead.	true false	true
storeAs	String	Optional	The variable to store the result as.	N/A	N/A
storeAsHidden	String	Optional	The variable to store the result as, while hiding the output. Equivalent to 'storeAs=ThisValue, hidden=true'.	N/A	N/A
storeAsVariableDelimiter	Char	Optional	The delimiter used by storeAs to split the input (Legacy mode only), when there are multiple stored variables. For example, in this macro, we indicate that the value to be stored should be split by the asterisk when being stored: [String:value=abcd, storeAs=var1;var2;var3;var4, storeAsVariableDelimiter=]	N/A	;
storeFormattedValueAs	String	Optional	The name of the STRING variable to store the result as and output (both will use the same format) into the report. Note that if you also use 'storeAsHidden' in the same macro, you should not expect the output to be hidden, as this parameter overrides that.	N/A	N/A

General (1)6 additional

Parameter	Type	Presence	Purpose	Options	Default
columnIndices	List<Int32>	Mandatory	The zero-indexed columns to select, separated by a semi-colon e.g. 1;2;3.	N/A	N/A

Additional (6)

Parameter	Type	Presence	Purpose	Options	Default
values	List<Object>	Mandatory	The list of input values. In Legacy Mode, they should be split by the delimiter character.	N/A	N/A
comment	String	Optional	Add a comment to make your document template more readable. The comment is discarded in the output document.	N/A	N/A
desiredExecutionResult	ExecutionResult	Optional	If specified, asserts the expected execution result of the macro. The macro executes normally; if the actual result matches the desired value, the result is converted to Success. If the actual result does not match, the result is converted to MacroError with a descriptive message. This is primarily used for testing and diagnostic purposes. Valid values are: Unknown, Success, MacroError, WorkerStopped, Running, Warning, NeverRun, Cancelled, Pending, Paused, SystemError, Deferred, Stopped.	Cancelled Deferred MacroError NeverRun Paused Pending Running Stopped Success SystemError Warning WorkerStopped	N/A
expectedType	String	Optional	If specified, asserts the expected output type of the macro result. The macro executes normally; if the actual type does not match, a macro error is generated. Requires 'storeAs', 'storeAsHidden', or 'storeFormattedValueAs' to be set for typed validation. Valid types include CLR names (e.g. Int32, Int64, Single, Double, Boolean, String, JArray, JObject) and C# keyword aliases (e.g. int, long, float, double, bool, string, uint, ulong, short, ushort, byte, sbyte, decimal, char, object). The special value 'Number' matches any numeric type.	N/A	N/A
expectedValue	String	Optional	If specified, asserts the expected output value of the macro result. The macro executes normally; if the actual value does not match, a macro error is generated. When 'storeAs' or 'storeAsHidden' is set, the stored variable value is compared. Otherwise, the document output text is compared.	N/A	N/A
singleValueList Normal mode	Boolean	Optional	In Normal Mode and for macros that output JArrays only, whether to convert a JArray of single-property jObjects into a flat JArray of values.	true false	false

Deprecated (4)

Parameter	Type	Preferred Parameter	Purpose	Options	Default
comparison	List<String>	comparisons	In 'normal' mode only, the comparisons that are jsonPaths. For multiple items, separate by a semi-colon e.g. property1;property2;...	N/A	N/A
order	List<String>	orderDirection	The semicolon-separated order directions. Each must be one of: Ascending, Asc, Descending or Desc.	N/A	None
orderByIndex	List<Int32>	orderByIndices	The semicolon-separated ordered list of columns to order by. The first is 0. e.g. 0;2;1	N/A	N/A
sortType	List<String>	sortTypes	The semicolon-separated sort types. Each must be one of Alphanumeric, Numeric or Auto. The default (Auto) will attempt a numeric sort if all the values are numeric, otherwise falls back to alphanumeric.	N/A	Auto

Examples (12)

Example 1Normal mode

This Normal Mode example selects the 2nd, 3rd and 4th items in a list (indexed by 1, 2, 3):

// Example 1 - This Normal Mode example selects the 2nd, 3rd and 4th items in a list (indexed by 1, 2, 3):
// First create a Normal Mode style list using the Calculate macro shorthand
[=: `list('item1-to-skip', 'item2-to-keep', 'item3-to-keep', 'item4-to-keep')`, =>List1]

// Select the required items
[List.SelectColumns: values={=List1}, columnIndices=1;2;3, mode=Normal, storeAs=Selected]

Outputs: Output to screen: item2-to-keep;item3-to-keep;item4-to-keep. Output to variable: [ "item2-to-keep", "item3-to-keep", "item4-to-keep" ]

Example 2Normal mode

This Normal Mode example selects the 2nd, 3rd and 4th items in a 'table' (list of lists), indexed by 1, 2, 3:

// Example 2 - This Normal Mode example selects the 2nd, 3rd and 4th items in a 'table' (list of lists), indexed by 1, 2, 3:
// First create a Normal Mode style table (list of lists) using the Calculate macro shorthand
[=: `list(list('item1-to-skip', 0), list('item2-to-keep', 1), list('item3-to-keep', 2), list('item4-to-keep', 3), list('item1-to-skip', 5))`, =>Table]

// Select the required items
[List.SelectColumns: values={=Table}, columnIndices=1;2;3, mode=Normal, storeAs=Selected]

Outputs: Output to screen: item2-to-keep^1;item3-to-keep^2;item4-to-keep^3. Output to variable: [ [ "item2-to-keep", 1 ], [ "item3-to-keep", 2], [ "item4-to-keep", 3] ]

Example 3Normal mode

This Normal Mode example selects the 2nd, 3rd and 4th items in a 'table' (list of lists), indexed by 1, 2, 3:

// Example 3 - This Normal Mode example selects the 2nd, 3rd and 4th items in a 'table' (list of lists), indexed by 1, 2, 3:
// First create an array / list of JObjects (a JObject contains one or more pairs of property names and values)
[Array:
    value=`[
        {"Item":"item1-to-skip","Index":0},
        {"Item":"item2-to-keep","Index":1},
        {"Item":"item3-to-keep","Index":2},
        {"Item":"item4-to-keep","Index":3},
        {"Item":"item5-to-skip","Index":4}
    ]`,
    =>TheArray]

// Select the required items
[List.SelectColumns: values={=TheArray}, columnIndices=1;2;3, mode=Normal, storeAs=Selected]

Outputs: Output to screen: { "Item" : "item2-to-keep", "Index" : 1 };{ "Item" : "item3-to-keep", "Index" : 2 };{ "Item" : "item4-to-keep", "Index" : 3 }. Output to variable: [ { "Item" : "item2-to-keep", "Index" : 1 }, { "Item" : "item3-to-keep", "Index" : 2 }, { "Item" : "item4-to-keep", "Index" : 3 } ]

Example 4

Select the 2nd, 3rd and 4th item in a list (indexed by 1, 2, 3):

// Example 4 - Select the 2nd, 3rd and 4th item in a list (indexed by 1, 2, 3):
[List.SelectColumns: values=item1-to-skip;item2-to-keep;item3-to-keep;item4-to-keep, columnIndices=1;2;3, =>Specs]

Outputs: item2-to-keep;item3-to-keep;item4-to-keep

Example 5Normal mode

Demonstrates the use of the 'condition' parameter:

// Example 5 - Demonstrates the use of the 'condition' parameter:
// Select the required items filtered by the condition that the values must begin with a b
[List.SelectColumns: values=red;green;blue;black, columnIndices=1;2;3, mode=Normal, storeAs=Selected, condition="startsWith(value, 'b')"]

Outputs: Output to screen: blue;black Output to variable: [ "blue", "black" ]

Example 6

Select the 2nd, 3rd and 4th item in a list (indexed by 1, 2, 3):

// Example 6 - Select the 2nd, 3rd and 4th item in a list (indexed by 1, 2, 3):
[List.SelectColumns: values=item1-to-skip;item2-to-keep;item3-to-keep;item4-to-keep, columnIndices=1;2;3, =>Specs]

Outputs: item2-to-keep;item3-to-keep;item4-to-keep

Example 7

Select the 2nd and 4th items in a list, but only if the value contains the word 'keep':

// Example 7 - Select the 2nd and 4th items in a list, but only if the value contains the word 'keep':
[=: `list('item1-to-skip', 'item2-to-keep', 'item3-to-skip', 'item4-to-keep')`, =>List1]
[List.SelectColumns: values={=List1}, columnIndices=1;3, condition="contains(value, 'keep')", mode=Normal, storeAs=Selected]

Outputs: item2-to-keep;item4-to-keep

Example 8

Select the 1st and 3rd items in a list and divide each value by 1024:

// Example 8 - Select the 1st and 3rd items in a list and divide each value by 1024:
[=: `list(2048, 4096, 8192, 16384)`, =>List1]
[List.SelectColumns: values={=List1}, columnIndices=0;2, calculate="value/1024", mode=Normal, storeAs=Selected]

Outputs: 2;8

Example 9

Select the 1st and 2nd items in a list and color the table cells if the value is greater than 1000:

// Example 9 - Select the 1st and 2nd items in a list and color the table cells if the value is greater than 1000:
[=: `list(500, 1500, 2500, 3500)`, =>List1]
[List.SelectColumns: values={=List1}, columnIndices=0;1, colorTableCell=true, condition="value > 1000", mode=Normal, storeAs=Selected]

Outputs: 1500 (with 1500 cell coloured)

Example 10

Select the 1st and 3rd items from a nested list (list of lists):

// Example 10 - Select the 1st and 3rd items from a nested list (list of lists):
[=: `list(list('item1-to-keep', 100), list('item2-to-skip', 200), list('item3-to-keep', 300), list('item4-to-skip', 400))`, =>NestedList]
[List.SelectColumns: values={=NestedList}, columnIndices=0;2, mode=Normal, storeAs=Selected]

Outputs: item1-to-keep^100;item3-to-keep^300

Example 11

Select the required items from a list of colors where the value starts with 'b':

// Example 11 - Select the required items from a list of colors where the value starts with 'b':
[=: `list('red', 'green', 'blue', 'black')`, =>ColorsList]
[List.SelectColumns: values={=ColorsList}, columnIndices=0;1;2;3, condition="startsWith(value, 'b')", mode=Normal, storeAs=Selected1]

Outputs: blue;black

Example 12

Select the required items from an array of JObjects where the 'Item' contains 'keep':

// Example 12 - Select the required items from an array of JObjects where the 'Item' contains 'keep':
[Array:
    value=`[
        {"Item":"item1-to-skip","Index":0},
        {"Item":"item2-to-keep","Index":1},
        {"Item":"item3-to-keep","Index":2},
        {"Item":"item4-to-keep","Index":3},
        {"Item":"item5-to-skip","Index":4}
    ]`,
    =>TheArray]

// Select the required items
[List.SelectColumns: values={=TheArray}, columnIndices=0;1;2;3;4, condition="contains(jPath(value, 'Item'), 'keep')", mode=Normal, storeAs=Selected]

Outputs: {"Item":"item2-to-keep","Index":1};{"Item":"item3-to-keep","Index":2};{"Item":"item4-to-keep","Index":3}