(octave.info)Enabling and Disabling Warnings

---

Prev: Issuing Warnings Up: Handling Warnings

---

Enter node , (file) or (file)node

12.2.2 Enabling and Disabling Warnings
--------------------------------------

The ‘warning’ function also allows you to control which warnings are
actually printed to the screen.  If the ‘warning’ function is called
with a string argument that is either "on" or "off" all warnings will be
enabled or disabled.

   It is also possible to enable and disable individual warnings through
their string identifications.  The following code will issue a warning

     warning ("example:non-negative-variable",
              "'a' must be non-negative.  Setting 'a' to zero.");

while the following won’t issue a warning

     warning ("off", "example:non-negative-variable");
     warning ("example:non-negative-variable",
              "'a' must be non-negative.  Setting 'a' to zero.");