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Please note that the recommended version of Scilab is 6.1.1. This page might be outdated.
However, this page did not exist in the previous stable version.
evstr
evaluates Scilab expressions and concatenates their results
Syntax
H = evstr(M) H = evstr(list(M, subExpr)) [H, ierr] = evstr(..)
Arguments
 M
single or vector or matrix of character strings: Scilab expressions to be evaluated and results to be concatenated.
 subExpr
vector of character strings: subexpressions to be preevaluated, defining quantities used in
M
expressions. H
single element, vector, or matrix of concatenated results.
 ierr
an integer, error indicator.
Description
Evaluates expressions set in M
. Then, concatenates their results
to build H
.
All expressions are assumed to yield results of compatible types and sizes with respect to their concatenation.
If the evaluation of M
expressions or the concatenation of their
results leads to an error, H = evstr(M)
yields the error as usual.
To avoid stopping to run next Scilab instructions,
[H, ierr] = evstr(M)
can be used to catch the error.
H
is then set to []
and ierr
returns 999
or another nonnull positive code.
If M
is provided through a list, Scilab expressions set in
subExpr
are evaluated before evaluating M
.
The results of these subexpressions must be referred to as %(k)
in M
, where k
is the subexpression's index in
subExpr
.

Special aliases:

Examples
a = 1; b = 2; Z = ['a', 'b'] ; evstr(Z) Z = list(['%(1)','%(1)%(2)'],['a+1','b+1']); evstr(Z) evstr('NaN'), evstr('Inf') //The two return values version [H, ierr] = evstr(Z) // no error Z = ['a', 'b', 'c'] ;// the variable c is undefined [H, ierr] = evstr(Z) // error 4: Undefined variable: c
See also
 execstr — execute Scilab code in strings
 sci2exp — converts an expression to a string
 strtod — parse and convert literal numbers STRings TO Decimal numbers
 concatenation — Concatenation. Recipients of an assignment. Results of a function
History
Version  Description 
5.3.0  "Nan" and "NaN" are now parsed as %nan .
"Inf" and "INF" are now parsed as %inf . 
6.0.1  Simple comments are now supported in almost all possible input expressions,
whatever is the shape of M . 
Comments
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