基于Python的空间数据批量处理方法   总被引：2，自引：0，他引：2  

彭海波  向洪普 《测绘与空间地理信息》2011,34(4):81-82,85,87

结合工作实践,在分析Python语言特点的基础上,介绍其在空间数据批量处理方面的应用。编制的程序实例可供相关人员参考。  相似文献   

基于CAD平台开发自动批量计算宗地椭球面积技术     

金玉玲  王要沛  武安状 《测绘与空间地理信息》2013,36(7):196-198

简要介绍了基于CAD平台下的自动计算宗地椭球面积开发技术,根据用户选择不同的椭球系统,1954,1980,2000,实现自动计算宗地椭球面积功能,提出了实现自动计算的技术路线及方法,用实例进行了验证,整个街坊一次全部计算完毕,并把结果标注在图上,极大地提高了作业效率,达到了满意的效果。  相似文献   

基于 CorelDRAW X4，VB6．0单线河批处理的技术研究     

崔创来 《测绘与空间地理信息》2013,(9)

介绍了水系的重要性,通过分析现阶段CorelDRAW X4中绘制单线河常用的方法以及其存在的不足,从而提出了单线河批处理制作与批处理结合的必要性。图文并茂,通过VB代码剖析了主要技术的实现。  相似文献   

Autolisp在房产测绘中的应用     

巫宇新 《测绘与空间地理信息》2013,36(6):202-204

主要介绍了在AutoCAD中使用Autolisp语言,解决房产测绘中标准图框的插入、房屋边长与面积注记以及图形批处理打印等实际工作中的问题,在内业处理上减少人为错误,提高生产效率。  相似文献   

基于VBA的ArcObjects二次开发在数据处理中的应用——以Shapefile的Merge和Split批处理为例     

颜振宇  李昌庆  陈美 《测绘与空间地理信息》2016,(1):162-164

以ArcGIS为数据处理平台,结合土地变更调查中的数据处理工作,分析ArcToolBox中工具存在的不足,以Merge和Split工具为例,探讨面向任务时基于VBA的ArcObjects二次开发的基本原理与设计思路,可为实际工作中的其他数据处理提供借鉴。  相似文献   

高分辨率卫星遥感技术在不可移动文物监测中的应用     

贺丹  杨凤芸 《测绘与空间地理信息》2016,(6)

随着我国经济建设发展脚步的不断加快,对文物资源的有效保护成为相关部门关注的话题。本文以安徽黄山市范围内的不可移动文物监测项目的运作过程为例,论述了遥感技术在文物监测中的应用,并验证了其可行性。最后,详细地总结出批量加载图片和统一设置图片大小的方法,提高了工作效率。  相似文献   

基于GAMIT的基线解算应用探究     

戈磊  赵凡  马亚洲 《江苏测绘》2012,(5):35-37

GAMIT基线解算是GPS数据分析和处理的重要方法。本文主要介绍利用虚拟的linux系统,以GAMIT软件进行精确定位、基线解算的批处理过程。对GAMIT软件安装过程进行详细的介绍,并利用基站的数据信息进行基线解算,对结算结果进行分析并得出结论,其目的在于解算后能形成模块以进行不同点的精确定位。  相似文献   

Physico‐chemical features of lake Ototoa,a sand‐dune lake in northern New Zealand     

J. D. Green 《新西兰海洋与淡水研究杂志》2013,47(2):199-222

Lake Ototoa is a warm monomictic lake at 36° 31’ S, 174° 14'E. During a year's study (March 1969‐March 1970), the lake became thermally stratified in November, the metalimnion being between depths of 12 m and 16 m. Surface temperatures ranged between 10.2°c (in August) and 25.2°c (in late January), and bottom temperatures between 9.7°c and 17.5°c. The annual heat budget was calculated to be 642 354 KJ.m^‐2 (15 500 cal.cm^‐2) and the work of the wind in distributing the heat income 1.730 KJ.m^‐2 (1766 g.cm.cm^‐2). Secchi disc transparencies ranged between 5 m and 9.2 m (mean 7.07 m) and were greatest in the summer. Light transmission per metre was also high, ranging between 61% and 87%. Surface waters were normally supersaturated with oxygen, but during summer stratification oxygen concentrations in the bottom waters dropped to a minimum of 2.3 mg.litre^‐2 and a positive heterograde distribution of oxygen with depth was found. The oxygen deficit was 0.015 mg.cm^‐2.day^‐1 and showed the lake to be oligotrophic. Mean surface pH was 7.82, and the ionic composition of the waters was similar to that of other small New Zealand and Australian lakes located near the sea. Compared with other New Zealand lakes PO4‐P concentrations (range 1.00–10.20 μg.litre^‐1) were low and NO3—N concentrations (range 0.12–0.60 mg.litre^‐1) high.  相似文献   

Coastal Pollution Mitigation with Lime and Zero Valent Iron     

John L. Daniels  Gautham P. Das  Maria Teresa Serrano Hernandez  Sunyoung Bae 《Marine Georesources & Geotechnology》2006,24(3):183-191

The Taiwan Strait region has many miles of coastline, and the Taiwan Straits Tunnel (TST) project faces many potential pollution problems as construction proceeds through sensitive areas. Conventional approaches for pollution mitigation require further examination. The recent development of nanoscale particle technology has shown distinct advantages for contaminant attenuation and ground improvement. This paper is focused on trace metals and is part of the overall effort to develop the nanoscale particle technology. Trace metals in ground and surface waters represent a continued threat to human and ecological health. One of the difficulties in removing toxic concentrations of trace metals from solution is the variable oxidation state and amphoteric nature of multiple constituents. In particular, while cationic metals (e.g., Pb²⁺, Cd²⁺, Ni²⁺) may be rendered less mobile under high pH conditions, anionic metals (e.g., AsO₄^3-, CrO₄^2-, SeO₄^2-)may become more mobile. The objective of this research was to evaluate the sorption of both cationic and anionic trace elements, including arsenic (As), cadmium (Cd), chromium (Cr) and selenium (Se) under batch conditions. Mixtures of a local residual soil were tested alone and in combination with lime and zero valent iron. It was hypothesized that lime would raise the pH and precipitate positively charged metals while zero valent iron would create reducing conditions favorable to the immobilization of negatively charged metals. Results indicate that the use of lime and/or zero valent iron can increase the sorption capacity of soil. Compared to the baseline soil, sorption capacity increased with addition of lime for arsenic and cadmium while it decreased for chromium and selenium. In the case of zero valent iron addition, sorption capacity increased for cadmium, chromium and selenium, while showing no change for arsenic. When both lime and zero valent iron were used, the sorption capacity increased for all metals tested. These results suggest that the combined use of lime and zero valent iron may serve as an alternative treatment technology for removing trace metals from contaminated water systems.  相似文献   

Experimental Study on Mine Spoils During Superficial Geochemical Processes     

王一先  白正华 《中国地球化学学报》2002,21(4):289-297

Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit ,the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors.The experimental results showed that it is not always true that the imine drainage is acidic.Its acidity depends on acid-buffering capacity of gangue,host rock and its alteration mineral assemblage.The composi-tion of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils,including minerals,hydroxides and amorphous substances.The leaching extent of the element is related with its occurrence form in the deposit.The prefer-ential flow results in leaching-out of heavy metals in large amounts.So it is important to prevent the generating of preferential flow in the system.The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.  相似文献