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Function References
Reference for all built-in functions
Functions
E
eye

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Reference for all built-in functions
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API in different languages for users to call DolphinDB from their programs
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Release notes and compatibility changes for DolphinDB server, plugins and APIs

eye

Syntax

eye(X)

Details

Return an X by X indentity matrix.

Parameters

X is a positive integer.

Returns

A matrix of type DOUBLE.

Examples

eye(3);


#0	#1	#2
1	0	0
0	1	0
0	0	1