Veusz 1.18 發布，Python 科學圖表庫

Veusz 是一個用來繪制各種科學圖表的Python程序庫，可導出為 Postscript 和 PDF 文檔。包含一個易用的圖形化界面，同時也有一些命令行接口以便直接在 Python 程序中調用。

功能特性包括:

• X-Y plots (with errorbars)
• Images (with colour mappings)
• Contour plots (filled/unfilled)
• Stepped plots (for histograms)
• Bar graphs
• Line plots
• Function plots
• Stacked plots and arrays of plots
• Vector field plots
• Plot keys
• Plot labels
• Box plots
• Polar plots
• Ternary plots
• Shapes and arrows on plots
• LaTeX-like formatting for text
• EPS / PNG / PDF / SVG / EMF output
• Simple, CSV, Numpy NPY/NPZ, binary and FITS data importing
• Scripting interface
• Dataset manipulation
• Embed Veusz within other programs
• Capture data from external sources
• Plugin interface for importing data, making datasets or modifying documents
• Data picker
• Multithreaded rendering

發行說明:

 * Add support for dataset expressions when plotting
 * Add axis-function widget for plotting axes which have a scale given
   by a function, or are linked to a different axis via a function
 * Add stepped colour maps
 * Support editing multiple datasets simultaneously in editor
 * Add setting to fix aspect-ratio of graphs
 * Add 'vcentre' line step mode for vertical step plots
 * Add internal margin setting for grids to separate sub-plots
 * Add pixel, pixel_wcs, fraction and linear_wcs FITS import
   coordinate system modes
 * Add drop down toolbar button menu to create axis widgets
 * More efficient widget dependency resolution

詳細說明：http://home.gna.org/veusz/releasenotes/1.18.txt

項目地址：http://home.gna.org/veusz/