FAQ: Difference between revisions

   URL https://octave.org/doc/v{{Release}}/

     url      = {[https://octave.org/doc/v{{Release}}/ https://octave.org/doc/v{{Release}}/]},

** '''Solution:'''

*** Version 5.2.0 and older: Delete the folder {{path|C:\Users\YOUR_USER_NAME\.config\octave}}

*** Version 6.1.0 and newer: Delete the folder {{path|%APPDATA%\octave}}, which generally is located at {{path|C:\Users\YOUR_USER_NAME\AppData\Roaming\octave}}

 

* Permission errors

**# If {{Path|testscript.vbs}} doesn't run in any of those locations, then scripting appears to be disabled or blocked on your system.  If {{Path|testscript.vbs}} runs in some locations but not others, there there may be other security permissions errors to be solved.  If {{Path|testscript.vbs}} runs in the same folder as {{Path|octave.vbs}}, but directly double-clicking on {{Path|octave.vbs}} does not start Octave, then there appears to be some problem other than script permissions.  

** '''Solution 2:''' Consult your malware detection (a.k.a. AntiVirus) software, if files are blocked.

** '''Solution 3:''' Did you install Octave on a network-drive?  Do you have the execution permissions?

 

Floating-point arithmetic is an approximation '''in binary''' to arithmetic on real or complex numbers.  Just like you cannot represent 1/3 exactly in decimal arithmetic (0.333333... is only a rough approximation to 1/3 for any finite number of 3s), you cannot represent some fractions like <math>1/10</math> exactly in base 2.  In binary, the representation to one tenth is <math>0.0\overline{0011}_b</math> where the bar indicates that it repeats infinitely (like how <math>1/6 = 0.1\overline{6}_d</math> in decimal).  Because this infinite repetition cannot be represented exactly with a finite number of digits, rounding errors occur for values that appear to be exact in decimal but are in fact approximations in binary, such as for example how 0.3 - 0.2 - 0.1 is not equal to zero.