From octave-sources-request at bevo dot che dot wisc dot edu Fri Jan 18 06:41:36 2002
Subject: loading ascii files starting with a digit
From: Teemu Ikonen <tpikonen at pcu dot helsinki dot fi>
To: octave-sources at bevo dot che dot wisc dot edu
Date: Fri, 18 Jan 2002 14:40:41 +0200


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When loading a file with a matrix of raw ascii numbers with 'load' the data
is stored in a variable which is named as the file, but without an
extension. If the filename starts with a number like, for example
'123data.dat', the variable is then called '123data' which can't be accessed
with the Octave parser. Matlab (at least version 6) handles this by
prepending an 'X' to the variable name ('X123data'). Attached is a patch
which causes similar behavior in Octave.

Teemu

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*** load-save.cc.orig	Fri Jan 18 13:47:21 2002
--- load-save.cc	Fri Jan 18 14:27:58 2002
***************
*** 2081,2086 ****
--- 2081,2094 ----
        int nr = 0;
        int nc = 0;
  
+       // Append 'X' to a variable name starting with a digit
+       // as in Matlab v6
+       if(isdigit(varname[0]))
+ 	{
+ //	  warning("load: prepending 'X' to a variable name starting with a digit");
+ 	  varname = "X" + varname;
+ 	}
+ 	
        get_lines_and_columns (is, filename, nr, nc);
  
        if (! error_state && nr > 0 && nc > 0)

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2002-01-18  Teemu Ikonen  <tpikonen at pcu dot helsinki dot fi>

	* load-save.cc: When loading a file of numbers only an 'X'is
	prepended to the variable name if the filename starts with a digit.

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