double

测绘行业的坐标转换程序 用于大地坐标系，空间直角坐标系转换 大地坐标系，直角坐标系转换(Mapping the coordinates of the conversion process industries for the geodetic coordinate system, Cartesian coordinate system conversion of space geodetic coordinate system, Cartesian coordinate system conversion)

flow3d中的源代码，适用于flow3d的二次开发，希望对大家有所帮助(source code in the flow3d flow3d apply to the second development, we want to help)

envi软件，调用决策树，经过实测可用。前提装envi(envi software, called the decision tree, after the measured available. Premise equipment envi)

duffing振子的安全盆做法,运用Fortran软件运行，很方便，很实用，对学习非线性方面的同学很有帮助(duffing osillator for the safe basin)

GIS的发展方向,GIS专业的人应该知道的文章，请勿抄袭(direction of the development of GIS, GIS professional people should be aware of the article, please do not plagiarism)

使用GDAL读取Landsat等GeoTIFF格式的卫星数据(Use GDAL to read satellite data in GeoTIFF format such as Landsat)

vb+mapobjects二次开发程序，带数据(VB + MapObjects secondary development program with data)

ARCGIS图斑净面积计算工具,AreaCalculationTool(A Tool for Calculating Net Area of Patches)

说明：  ArcGIS Engine 开发从入门到精通源程序2(共4)(Development of ArcGIS Engine from Initial to Proficient in Source Program 2 (4))

naumenko creep model, for Creep Subroutine on uniaxial