Programmer Guide/Command Reference/EVAL/init: Difference between revisions

Revision as of 13:14, 4 April 2011

Create a vector or a matrix and initialize it with a particular value.

Usage

init(n {, m {, v}})

Result: The result is a numerical object with n rows and m columns. All elements are set to v.
See also: init, rand

The number of rows. There is no default.

The number of columns. The default is 1.

The value to initialize with. The default is 0.

vector or matrix

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
 Create a vector or a matrix and initialize it with a particular value.
-;Usage: <code>init(<var>rows</var> {, <var>cols</var> {, <var>value</var>}})</code>
+;Usage: <code>init(<var>n</var> {, <var>m</var> {, <var>v</var>}})</code>
+:;<var>n</var>: number of rows, ''n''>1
-::note: if ''n'' is a vector, ncol(''n'') is used as number of elements
+:;<var>m</var>: number of columns, ''m''>=1 (default='''1''')
-:;<var>x0</var>: start value, must be a scalar (default='''0''')
+:;<var>v</var>: initialization value (default='''0''')
-:;<var>dx</var>: increment, must be a scalar (default='''0''')
+::All arguments are scalars!
-;Result: The result is a vector r with ''n'' elements. The elements are initialized with: <code>''r''<sub>i</sub> = ''x0'' + i*''dx''; i=0..''n''-1''</code>
+;Result: The result is a numerical object with ''n'' rows and ''m'' columns. All elements are set to ''v''.
 ;See also: [[Programmer_Guide/Command_Reference/EVAL/init|init]], [[Programmer_Guide/Command_Reference/EVAL/rand|rand]]