SciDAVis 0.2.4 released

This release adds two Czech translations (see below), improves the API exposed to Python scripts (documentation is still under construction, sorry) and fixes many bugs and performance problems. In particular:

- some parts of the Python API have been marked as deprecated and generate
warnings when used. This may be a bit unusual for a bugfix release; on the
other hand, they won't be removed any time soon and inserting the
deprecation warnings now will give everyone as much time as possible for
getting accustomed to the API we're moving towards.
Most prominently,
Table.cell(column,row) and
are deprecated in favour of
Table.column(column - 1).valueAt(row - 1) and
Table.column(column - 1).setValueAt(row - 1, value)
(note that the column/row INDICES DIFFER BY ONE!); the same goes for
Table.text(c,r) -> Table.column(c - 1).textAt(r - 1) and
Table.setText(c,r,text) -> Table.column(c - 1).setTextAt(r - 1,text).
This serves multiple purposes. It simplifies the interfaces by grouping all
functionality specific to a certain column in the Column class; it allows
column objects to be stored and passed around; and it moves from the
unconventional 1-based indexing to the more conventional 0-based indexing.
Future additions to the API will increasingly make use of the columns-as
objects paradigm.
- lots of bugfixes, again including crashes
- fixed compatibility issues with Qt 4.6 and SIP 4.9
- performance improvements
- substantially improved support for plots involving date/time data
- added two Czech translations: a default one by Pavel Fric (feedback
requested via\) and an alternative one by Jan
- updated Spanish translation, thanks to Mauricio Troviano; Brazilian
Portuguese translation, thanksto Fellype do Nascimento; and German
- fixed and extended many parts of the API for Python scripts, including the
new methods
Layer.grid() # => returns an instance of the new class Grid
the constants QwtPlot.yLeft, QwtPlot.yRight, QwtPlot.xBottom, QwtPlot.xTop
for specifying axes and the Grid class
- multiple graphs can have active tools simultaneously
- based on user feedback, the default behaviour when importing ASCII files has
been changed to interpret the data as numeric (only applies to fresh
installations of SciDAVis)
- automatic resizing of table rows for multi-line cells intentionally dropped,
because this seems to be rarely needed and has a huge impact on performance
for large tables

Posted by Knut Franke 2010-03-27

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