Re: [Gretl-users] proportion test bug
Allin Cottrell schrieb:
On Tue, 6 Jun 2006, Sven Schreiber wrote:
> When using the test statistic calculator to perform a proportion test
> and requesting a graph of the test distribution, there's an error
> message "bad png header..." and a black window. gretl 1.5.1 as well as
> latest snapshot on windows.
Sven, could you be a little more specific? I've tested a random example
and it worked OK. What was the input to the proportion test?
Various inputs produced the problem, it happens every time for me (apart
from non-accepted values that trigger the non-normal warning). The exact
error message in the dialog is "Bad PNG header: Got bytes 8c e0 22 0"
and then in another dialog "Image file ... contains no data" (translated
back by me). After that, there is an empty (black) gnuplot window open,
(and the normal textual test output).
Ok, just found out that when I start gretl in English everything is ok!
So there seems to be some subtle error in the translation again. But
where would I have to look to check, i.e. what strings are sent over to
gnuplot? As I said, this happens already with 1.5.1, so the problem must
date back some revisions.
Advice is appreciated,
Sven