The following message, aside from the aspect ratio question, provides
another data point for the plend + Cairo driver segmentation fault
bug.  I don't know that it will help at all in tracking down the bug.
It does, however, show that the bug extends beyond Debian and Ubuntu.

Hez


---------- Forwarded message ----------
From: Valery Pipin <p...@iszf.irk.ru>
Date: Wed, Mar 25, 2009 at 4:36 AM
Subject: [Plplot-general] aspect ratio
To: plplot-gene...@lists.sourceforge.net


Dear list

I have a problem to get a plot with given aspect ratio.
I'm using python interface and plplot-5.9.2.
Documentation says that
"The routine plvasp gives the largest viewport with the given aspect ratio
that fits in the current subpage (i.e. the ratio of the length of the y axis to
that of the x axis is equal to aspect)."

E.g., if I use plvasp(.3) I have a lot of space in vertical regions outside of
plotting domain. I can easily cut the graph from the relevant viewers.
Is it possible to get the result in the normal way?

Yet, there are some problem with cairo devices within interactive python
interface. I can use it only one time per python session. E.g., if I save the
plot to one of cairo dev, then in the next try to do the same I get

>>> ## working on region in file /home/va/tmp/python-15892G8I.py...
8.82010989643e-05 -6.65879061831e-05

(process:16189): GLib-GObject-WARNING **: cannot register existing type
`PangoCairoFcFontMap'

(process:16189): GLib-GObject-WARNING **: cannot register existing type
`PangoCairoFontMap'

(process:16189): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite:
assertion `G_TYPE_IS_INTERFACE (interface_type)' failed

(process:16189): GLib-GObject-CRITICAL **: g_type_add_interface_static:
assertion `G_TYPE_IS_INSTANTIATABLE (instance_type)' failed

(process:16189): GLib-CRITICAL **: g_once_init_leave: assertion
`initialization_value != 0' failed

(process:16189): GLib-GObject-CRITICAL **: g_object_new: assertion
`G_TYPE_IS_OBJECT (object_type)' failed

(process:16189): Pango-CRITICAL **: pango_font_map_create_context: assertion
`fontmap != NULL' failed

(process:16189): Pango-CRITICAL **: pango_cairo_update_context: assertion
`PANGO_IS_CONTEXT (context)' failed

(process:16189): Pango-CRITICAL **: pango_layout_new: assertion `context !=
NULL' failed

(process:16189): GLib-GObject-CRITICAL **: g_object_unref: assertion
`G_IS_OBJECT (object)' failed

(process:16189): Pango-CRITICAL **: pango_layout_set_markup_with_accel:
assertion `PANGO_IS_LAYOUT (layout)' failed

(process:16189): Pango-CRITICAL **: pango_layout_get_pixel_extents: assertion
`PANGO_IS_LAYOUT (layout)' failed

(process:16189): Pango-CRITICAL **: pango_layout_get_context: assertion
`layout != NULL' failed

(process:16189): Pango-CRITICAL **: pango_cairo_context_set_font_options:
assertion `PANGO_IS_CONTEXT (context)' failed

Process Python Ошибка Ñ ÐµÐ³Ð¼ÐµÐ½Ñ‚Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ

So, to proceed further I need to restart python!
I'm on altlinux, with
Python 2.5.4 (r254:67916, Feb 20 2009, 23:10:36)
[GCC 4.3.2 20081105 (ALT Linux 4.3.2-alt7)] on linux2

and i'm using plplot-5.9.2

best regards
Valery

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-- 
Hezekiah M. Carty
Graduate Research Assistant
University of Maryland
Department of Atmospheric and Oceanic Science

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easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
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