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instlength

Count instruments

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Syntax

NInst = instlength(InstSet)

Description

NInst = instlength(InstSet) computes NInst, the number of instruments contained in the variable InstSet.

example

Examples

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Open Live Script

Retrieve the instrument set ExampleInst from the data file InstSetExamples.mat. ExampleInst contains three types of instruments: Option, Futures, and TBill. 

load InstSetExamples; 
instdisp(ExampleInst)
Index Type   Strike Price Opt  Contracts
1     Option  95    12.2  Call     0    
2     Option 100     9.2  Call     0    
3     Option 105     6.8  Call  1000    
 
Index Type    Delivery       F     Contracts
4     Futures 01-Jul-1999    104.4 -1000    
 
Index Type   Strike Price Opt  Contracts
5     Option 105     7.4  Put  -1000    
6     Option  95     2.9  Put      0    
 
Index Type  Price Maturity       Contracts
7     TBill 99    01-Jul-1999    6

Count the number of instruments contained in the variable ExampleInst.

NInst = instlength(ExampleInst)
NInst = 
7

Input Arguments

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Instrument variable containing a collection of instruments, specified as InstSet structure. Instruments are classified by type; each type can have different data fields. The stored data field is a row vector or character vector for each instrument.

Data Types: struct

Output Arguments

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Number of instruments in InstSet, returned as a numeric value.

Version History

Introduced before R2006a

See Also

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