This is a 2d plotting library for data visualization, and is used in some of the book's code samples that produce line graphs and bar charts.
这是一个用于数据可视化的2d绘图库，本书在一些程序例子中用到该库用于产生曲线图和柱状图。
This paper analyzes the variety and advantage of the bar code, introduce my personal experience in practical work, advance some suggestion about using the bar code in library management.
通过对条形码的种类和优点的分析，介绍了自己在实际工作中的经验，对条形码技术在图书管理中更好利用提出了一些建议。
Easy language Sketchpad bar code source routine procedures combined with easy language multithreading support library, use Sketchpad drawing barcode.
易语言画板条形码源码例程程序结合易语言多线程支持库，使用画板画条形码。
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