一个将bmp转化为JPEG的源代码。很实用，操作方法见文本文件。-a JPEG into the source code. Very useful, method of operation, see a text file.

文本转换为影像程序源码。实现将满足一定格式的文本文件转化为各种格式影像的功能。关于影像的操作采用GDAL库。-Convert text to image program source code. Meet some of the format will realize text files into various formats video function. About the operation of the image the GDAL library.

该程序用于计算二维地图中，各路段的长度（需要知道各路段顶点坐标，以及各点间联系），采用文件操作的形式(txt文本)。-The program is used to calculate 2 d maps, the length of each section (need to know the various sections of vertex coordinates, as well as contact between each point), in the form of file ope