Your message dated Sun, 13 Sep 2009 12:36:49 +0200 with message-id <[email protected]> and subject line Re: Bug#545105: wxmaxima: plotting fails ("no handler found for image type")) has caused the Debian Bug report #545105, regarding wxmaxima: natural log function fails with misleading error to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 545105: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=545105 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: wxmaxima Version: 0.8.2-1 Severity: important Inline 2D plotting completely fails in wxMaxima now. An error message is displayed ("no handler found for image type") and a large X is shown in the main window where the graph should be. Plotting used to work fine in the Lenny version. It's kind of an important feature for a computer algebra system. John Lindgren -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.30-1-686 (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages wxmaxima depends on: ii libc6 2.9-25 GNU C Library: Shared libraries ii libgcc1 1:4.4.1-1 GCC support library ii libstdc++6 4.4.1-1 The GNU Standard C++ Library v3 ii libwxbase2.8-0 2.8.7.1-1.1 wxBase library (runtime) - non-GUI ii libwxgtk2.8-0 2.8.7.1-1.1 wxWidgets Cross-platform C++ GUI t ii maxima 5.17.1-1 A computer algebra system -- base ii maxima-doc 5.17.1-1 A computer algebra system -- docum wxmaxima recommends no packages. wxmaxima suggests no packages. -- no debconf information
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--- Begin Message ---Hi, On Saturday 05 September 2009 02:40:59 John Lindgren wrote: > I found out that this strange error message only occurs when trying to > use the natural log (ln) function. If I enter "log(x)/log(%e)" instead > of "ln(x)", plotting works fine. This is a pain, since I use the natural > log frequently. (I think I knew last semester that "ln" didn't work but > forgot over the summer.) According to Maxima there is no function ln() and log() is actually the natural logarithm: (%i1) ? ln No exact match found for topic `ln'. Try `?? ln' (inexact match) instead. (%o1) false (%i2) ? log -- Function: log (<x>) Represents the natural (base e) logarithm of <x>. Maxima does not have a built-in function for the base 10 logarithm or other bases. `log10(x) := log(x) / log(10)' is a useful definition. Simplification and evaluation of logarithms is governed by several global flags: `logexpand' - causes `log(a^b)' to become `b*log(a)'. If it is set to `all', `log(a*b)' will also simplify to `log(a)+log(b)'. If it is set to `super', then `log(a/b)' will also simplify to `log(a)-log(b)' for rational numbers `a/b', `a#1'. (`log(1/b)', for `b' integer, always simplifies.) If it is set to `false', all of these simplifications will be turned off. `logsimp' - if `false' then no simplification of `%e' to a power containing `log''s is done. `lognumer' - if `true' then negative floating point arguments to `log' will always be converted to their absolute value before the `log' is taken. If `numer' is also `true', then negative integer arguments to `log' will also be converted to their absolute value. `lognegint' - if `true' implements the rule `log(-n)' -> `log(n)+%i*%pi' for `n' a positive integer. `%e_to_numlog' - when `true', `r' some rational number, and `x' some expression, `%e^(r*log(x))' will be simplified into `x^r' . It should be noted that the `radcan' command also does this transformation, and more complicated transformations of this ilk as well. The `logcontract' command "contracts" expressions containing `log'. I don't see any bug here. Cheers Frank
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