网络释义 1. 测区轮廓 ...PEX格式的文件索引时,不仅要将该文档与相应测区的测区轮廓(Geometry Set)进行关联,还要将该文档与井名和井ID号 … www.zgxxj.org|基于2个网页 2. 形集 部件包含点集(Point set)、形集(Geometry set)、数据集(Data set)等,若只需要显示部件形状,只需处理其形集Gmref … ...
Product Name Plastic Ruler Set Item NO. BP67 Material Plastic Color Transparent Packing 4 PCS / OPP Bag Packing Size 27*13.5cm Size : Straight Ruler: 20cm/8inch; Right Angle Triangle: 30 degree; Scale 13cm and 5.1inch Isosceles Triangle: 45 degree ; Scale 9...
Function bundle:Geometry Returns the arithmetic angle of a line between two points in degrees (0 - 360). The angle is measured in a counter-clockwise direction relative to east. For example, an angle of 90 degrees points due north. Only the x-y plane is considered for the measurement. An...
geometry ST_Intersection(geometry geomA , geometry geomB); geography ST_Intersection(geography geogA , geography geogB); geometry ST_Intersection(geometry set gField); 参数 参数名称 描述 geomA/geomB 两个目标Geometry对象。 geogA/geogB 两个目标Geography对象。 gField Geometry字段。 描述 如果输入的两...
1.4水平集(Level Set) 水平集就相当于通过离散近似连续的距离函数的形式(函数嘛~这东西并不是每次都能写得出来的嘛),它将距离函数表示为离散的数值网格,这种离散化的优势就在于可以统一表示所有有距离函数或无距离函数的模型。 1.5分形(Fractals) 分形就是一个几何体重复出现叠加成新的几何体。
Constructs the geometry that is the set-theoretic union of the input geometries. The two geometries being unioned must be the same shape type. within (second_geometry, {relation}) Indicates if the base geometry is within the comparison geometry. within is the opposite operator of contains. ...
返回值PGconn *指针,即连接指针。如果你要对PQsetdbLogin函数封装的话,记得将形参连接指针设成PGconn *&引用类型,因为连接函数需要对连接指针修改,而不是修改对象! pghost:主机地址,本机为127.0.0.1或localhost; pgport:端口值,一般为5432; pgoptions:额外选项,NULL即可; ...
When you set the output parameter of a geoprocessing tool to an empty Geometry object, the tool will return a list of Geometry objects. import arcpy # Run the Copy Features tool, setting the output to the geometry object. # geometries is returned as a list of geometry objects. geometries...
The RF-PCB Toolbox™ supports the newer RS-274X format both to generate Gerber files from a PCB model and to create the PCB model from a set of Gerber files. Prototype, Design, and Analysis of SIW based Microstrip Tapered Transmission Line Design and analyze a Substrate Integrated ...
geometry ST_SetEffectiveArea(geometry geomA , float threshold , integer setArea); 参数 参数名称描述 geomA 目标Geometry对象。 threshold 容差,默认为0。如果设置,将只返回面积大于等于容差的顶点。 setArea 默认为1。 描述 指定容差后,此功能可用于服务器端简化。 不设置容差,可以使用它来快速简化图形。 该函...