2017-07-18 缩放图片并保存

说明：  STM32F103 通过I2C总线识别TCS34725颜色输出(STM32F103 identifies tcs34725 color output through I2C bus)

将大地坐标转换到大地空间直角坐标，即将大地纬度，大地经度，大地高转换到X,Y,Z,采用的是克拉索夫斯基椭球(Will the earth coordinate transformation to the space rectangular coordinate, the earth is the latitude and longitude of the earth, the earth high transition to the X, Y, Z, USES a carat SuoFuSi ellipsoid)

在linux下面实现的单纯性算法的源代码，已经调试通过，为毕业设计和课程论文的好东西。欢迎使用。(Linux achieved in the following simple algorithm source code has been adopted debugging for graduation thesis curriculum design and good things. Welcome.)

说明：  基于PIC单片机的PPM调制激光通信收发器，通过proteus进行仿真。(The PM modulated laser communication transceiver based on PIC MCU is simulated by proteus.)

c#语言实现三维点云文件的读取以及opengl显示(c# language to achieve a three-dimensional point cloud file read and opengl display)

lambda algorithm for gps attitude determination

玩软件无线电的时候，用的rtl2832,这是它的驱动源码(When playing software radio with rtl2832, this is the driver source)

单片机课程必备，一些LED例程，希望对初学者有用(MCU course is necessary, some LED routines, hope to be useful for beginners)

这是一个模仿windows鼠标框选的程序，希望对大家有用。(This is a program that immitates the mouse selectbox.)

《ArcGIS Engine地理信息系统开发教程》（作者:牟乃夏,ISBN:9787503035753）随书光盘源码，为了节约空间，编译结果和数据已经删除(The code for《ArcGIS Engine GIS develop manual》)