New answers tagged bugs
7
There are a couple of known bugs at play here. First, in TemporalData the date increment is given as a rational number but some of the underlying date functionality doesn't know how to handle this (e.g. DateList doesn't reliably cannonicalize date lists with fractional components).
(*As of 9.0.1*)
data = TemporalData[FinancialData["EUR/USD", {{2012, 5, 1}, ...
6
This is an issue on Windows only. We are aware of this, and it is planned to get this fixed in the next release of Mathematica. If I get the fix earlier and it is easy enough to create a patch, I will post the workaround here. As far as I know, there is no such issue with R 3.x.x on Linux. Currently, RLink should work on all 2.x.x versions of R (on Windows ...
5
Wolfram has confirmed that this is a bug. They are working to repair it.
Jeff
5
This issue reminds many similar problems with Integrate.
We have in Mathematica 8.0.4:
Integrate[ ArcTan[x]/(1 + x) Log[(1 + x^2)/2], {x, -1, 1}]
Pi^3/96
However in Mathematica 9.0.1 it takes quite a long time yielding a different result:
Integrate[ ArcTan[x]/(1 + x) Log[(1 + x^2)/2], {x, -1, 1}]
Infinity
This is a bug, we can compare it with ...
5
The specification RFC1738 : "Uniform Resource Locators" states that:
The characters ";", "/", "?", ":", "@", "=" and "&" are the characters which may be
reserved for special meaning within a scheme. No other characters may
be reserved within a scheme.
[...] only alphanumerics, the special characters "$-_.+!*'(),", and
reserved ...
7
Just in case somebody else needs it, here is a compiled answer.
Thanks go out to 0x4A4D (for the actual solution), Michael Pilat (for the JLink part) and everybody else in here for the swift responses.
Since this is apparently a bug of sorts in Mathematica 8, percent encoding the Greek letters in the URL will have to do.
Reciting Michael Pilat's code ...
4
From the information provided by @0x4A4D, the answer to my question is
that GeoDistance has the same problems as it did 2 years ago. I
implemented (in C++) some improved algorithms for geodesics in 2009
which are described in this paper. The benefits relative to GeoDistance are:
accurate to round-off for $|f| < 1/50$;
always converges;
computes ...
12
In version 8, the callback into the interpreter (also known as MainEvaluate or WolframCompileLibrary_Functions->evaluateFunctionExpression) looks like
Function[{iCompile$1}, Block[{i = iCompile$1}, {Print[i], i}]][register]
where register is the (integer, scalar) register that contains the value of i. This looks correct to me, although I'll admit that ...
4
I stumbled on this bug today, on a linux box. Same symptoms, redirection of the stdout from an executable script, thescript, that begins with
#!/usr/bin/env MathematicaScript -script
(* math stuff *)
when invoked as
$ ./thescript arg1 > somefile
or
$ ./thescript arg1 | head
resulted in an empty somefile and nothing from head. But without piping ...
0
After reading the documentation for PlotStyle and Graphics I have the following hyopthesis:
PlotStyle tries to apply a graphics directive to the object circle, but as it is written in your example, circle is syntactically incorrect for accepting the directive. The syntax for applying a graphics directive to a graphics primitive must be of the form:
...
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