I've got a Veusz 1.13 beta I'd like people to play with and give
feedback. I think it's pretty stable for normal use. Source and binaries
are available here:
http://download.gna.org/veusz/testing/
The main changes are multithreaded rendering of plots and a change to
how Veusz decides to redraw the plot. Veusz will use up to N threads for
rendering (see the preferences dialog for details). In detail, the plot
is converted into drawing commands in the main thread, but converted
into an image (which is slow) in the worker threads. You can set the
number of threads to 0 to get back the old behaviour. If you are using
the embedding interface it would be nice to get feedback.
The other big change is that Veusz updates the plot as soon as it is
modified rather than using a timer. This makes updates snappier. You can
switch back to the old behaviour as well if you like. There are a number
of places where multiple document changes happen at once, which would
lead to an embarrassing number of queued redraws. To stop this, updates
are suspended during document updates.
For embedding mode the old behaviour is retained as every document
changes would give an update. You can control the updates with the
SetUpdateInterval command. You can disable updates and force updates
when required using ForceUpdate if you wish.
I've decided not to put in Ben's nice per-widget change tracking code
for this release as we have a number of new features (see below) and it
would take too long to stabilise.
Other nice features include the ternary plot - see example - please try
out if you use this as I'm not a user so it would be useful to know if
it works! You can also rotate axis labels and ticks by 45 degree
intervals. Oh, and page sizes can be individually controlled.
Jeremy
Veusz 1.13
----------
Velvet Ember Under Sky Zenith
-----------------------------
http://home.gna.org/veusz/
Copyright (C) 2003-2011 Jeremy Sanders <[email protected]>
and contributors.
Licenced under the GPL (version 2 or greater).
Veusz is a Qt4 based scientific plotting package. It is written in
Python, using PyQt4 for display and user-interfaces, and numpy for
handling the numeric data. Veusz is designed to produce
publication-ready Postscript/PDF/SVG output. The user interface aims
to be simple, consistent and powerful.
Veusz provides a GUI, command line, embedding and scripting interface
(based on Python) to its plotting facilities. It also allows for
manipulation and editing of datasets. Data can be captured from
external sources such as internet sockets or other programs.
Changes in 1.13:
* Graphs are rendered in separate threads for speed and a responsive
user interface
* A changed Graph is rendered immediately on document modification,
improving latency
* A new ternary plot widget is included
* Size of pages can be modified individually in a document
* Binary data import added
* NPY/NPZ numpy data import added
* Axis and tick labels on axes can be rotated at 45 deg intervals
* Labels can be plotted next to points on non-orthogonal plots
* Add an option for DPI of output EPS and PDF files
Minor improvements:
* Import dialog detects filename extension to show correct tab
* Polygon fill mode for non orthogonal plotting
* --plugin command line option added, for loading and testing plugins
* Plugin for swapping two colors in a plot
* Dataset navigator is moved to right of window by default
* Mac OS X binary release updated to Python 2.7.2
* Import plugins can say which file extensions they support
* Import plugins can be "promoted" to their own tab on the import dialog
* ForceUpdate command added to embedding API, to force an update of
the displayed plot (useful if SetUpdateInterval is set to 0)
Bugs fixed:
* Images plotted when axes are inverted are inverted too
* Fixed crash when selecting datasets for plotting in the popup menu
* Picker crashes with a constant function
* 2D dataset creation using expressions fixed
Features of package:
* X-Y plots (with errorbars)
* Line and function plots
* Contour plots
* Images (with colour mappings and colorbars)
* Stepped plots (for histograms)
* Bar graphs
* Vector field plots
* Box plots
* Polar plots
* Plotting dates
* Fitting functions to data
* Stacked plots and arrays of plots
* Plot keys
* Plot labels
* Shapes and arrows on plots
* LaTeX-like formatting for text
* EPS/PDF/PNG/SVG/EMF export
* Scripting interface
* Dataset creation/manipulation
* Embed Veusz within other programs
* Text, CSV, FITS and user-plugin importing
* Data can be captured from external sources
* User defined functions, constants and can import external Python functions
* Plugin interface to allow user to write or load code to
- import data using new formats
- make new datasets, optionally linked to existing datasets
- arbitrarily manipulate the document
* Data picker
Requirements for source install:
Python (2.4 or greater required)
http://www.python.org/
Qt >= 4.3 (free edition)
http://www.trolltech.com/products/qt/
PyQt >= 4.3 (SIP is required to be installed first)
http://www.riverbankcomputing.co.uk/pyqt/
http://www.riverbankcomputing.co.uk/sip/
numpy >= 1.0
http://numpy.scipy.org/
Optional:
Microsoft Core Fonts (recommended for nice output)
http://corefonts.sourceforge.net/
PyFITS >= 1.1 (optional for FITS import)
http://www.stsci.edu/resources/software_hardware/pyfits
pyemf >= 2.0.0 (optional for EMF export)
http://pyemf.sourceforge.net/
PyMinuit >= 1.1.2 (optional improved fitting)
http://code.google.com/p/pyminuit/
For EMF and better SVG export, PyQt >= 4.6 or better is
required, to fix a bug in the C++ wrapping
For documentation on using Veusz, see the "Documents" directory. The
manual is in PDF, HTML and text format (generated from docbook). The
examples are also useful documentation. Please also see and contribute
to the Veusz wiki: http://barmag.net/veusz-wiki/
Issues with the current version:
* Some recent versions of PyQt/SIP will causes crashes when exporting
SVG files. Update to 4.7.4 (if released) or a recent snapshot to
solve this problem.
If you enjoy using Veusz, we would love to hear from you. Please join
the mailing lists at
https://gna.org/mail/?group=veusz
to discuss new features or if you'd like to contribute code. The
latest code can always be found in the Git repository
at https://github.com/jeremysanders/veusz.git.
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