重点讨论存储栅格数据的原理及应用。
Focus on the principles of raster data storage and applications.
通过分析栅格数据对信号的传播进行计算。
By analyzing the raster data to do the calculation of the spread of the signal.
在栅格数据模型中，地图的准确性还依赖于地图的比例。
In the raster data model, the map's accuracy also depends on the map's scale.
提出了基于关系模型和OLE/COM的栅格数据库解决方案。
This paper is mainly about the raster database solution based on the RDBMS and OLE/COM technologies.
GDAL还可让编程人员在世界地理坐标（即地理参考坐标）上设计栅格数据。
GDAL also enables programmers to project raster data onto worldwide geographical coordinates, known as georeferenced coordinates.
应用程序使用两种不同的数据结构存储GIS数据：栅格数据和矢量数据。
Applications store GIS data using two distinct data structures: raster data and vector data.
导入和导出矢量数据及栅格数据，实现多种GIS数据格式之间的转换。
Import and export vector and raster data, convert between different GIS data formats.
然而，存储可能不像栅格数据那样重要，其空间构成可能包含相当简单的数字数据。
However, storage might not be quite as important for raster data, whose spatial component likely contains fairly simple numerical data.
当对整个栅格数据遍历一次后，栈中剩下的记录便是所需的线性二又树编码结果。
When accessed to the whole raster data, the records remain in the stack are the re- quired bintree encoding results.
文章采用栅格数据模型，运用面积权重法和反距离加权法对GDP值进行了空间拓展。
Using the areal weighting interpolation and inverse distance weighted averaging, a spatial distribution model of GDP is established in this paper.
从栅格数据创建斑块主题是创建一个新图层(主题)，每类像素簇被指定其面积和周长。
Create Patch theme Grid creates a new layer (theme), where each clump of like-classified pixels is assigned its own area and perimeter.
从栅格数据创建斑块主题是创建一个新图层(主题)，每类像素簇被指定其面积和周长。
Create Patch theme from Grid creates a new layer (theme), where each clump of like-classified pixels is assigned its own area and perimeter.
该库为编程人员提供了通用的数据模型，包括所有栅格数据格式和矢量数据格式（通过OGR）。
The library gives programmers a common data model covering all raster data formats and -- through OGR -- vector data formats.
在总结现有的矢量数据向栅格数据转换算法的基础上，提出一种面积误差最小约束下的优化算法。
Based on summarizing the existing algorithms of transferring vector data to raster data, an optimization algorithm is proposed.
该文针对利用GIS现有空间查询接口进行海量遥感栅格数据库空间可视化检索效率低下的问题。
It is inefficient to visually retrieve image on magnanimous remote sensing raster image data base by some GIS spatial query interface.
在分析土壤侵蚀形成的主要影响因子基础上，提出了基于栅格数据的流域土壤侵蚀量估算的指标模型。
An index model of soil erosion estimation was put forward based on raster data after analyzing the main influence factors in Weifenhe watershed.
阐述了扫描精度、扫描数据格式说明、转换成通用的栅格数据方法、几何纠正、像片拼接等基本问题。
It includes some basic points such as scanning precision, format description of scanned data, conversion from the scanned data to generalized raster data, geometric correction and photograph merging.
矢量数据要求的存储要比栅格数据少得多，因为弧节点列表简化并减少了表示地图中包含的特征所需的数据。
Vector data require far less storage than raster data because arc node lists simplify and reduce the data required to make sense of the features contained in the map.
当前GIS中矢量数据的投影变换已日趋成熟，而栅格数据的投影变换的研究与应用还需要进一步的深入。
Map projection transformation of vector data is becoming mature presently, but research and application of raster data projection transformation in GIS needs further efforts.
数字拓扑主要研究栅格空间中离散几何对象的拓扑性质，这些性质在GIS空间分析和栅格数据处理中非常重要。
It is essential to the spatial raster data structure of GIS; in fact, all spatial analysis about raster data is based on the digital topology.
QGIS处理所有三种数据栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
QGIS handles all three - raster, vector, and database - a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
提出基于面积的变化统计方法，分别利用矢量数据的多边形交集和栅格数据的变化像素来统计地图矢量数据的变化。
Putting forward the change statistic method based on acreage, and counting the varieties of vector map data by using polygon intersection of vector data and changed pixel of raster data.
QGIS处理所有三种数据——栅格数据、矢量数据和数据库，这也是编写GIS数据编程库的程序员的重要努力方向。
QGIS handles all three — raster, vector, and database — a state of affairs that took considerable effort for programmers writing GIS data programming libraries.
结合和尚桥铁矿实际，对应用三维栅格数据结构研究矿床的三维建模和储量计算中涉及的若干技术和方法进行了评述。
On the basis of state of Heshangqiao Iron Mine, the 3d modeling researching ore body by 3d grid data structure and some technologies and methods used in ore reserves calculation were reviewed.
此方法利用ERDASIMAGINE的扩展库自定义新的投影椭球，用自定义的投影椭球对栅格数据成功地进行了投影变换。
Utilizing the extended library provided by ERDAS IMAGINE, and by using the self-defined spheroid IAG75 the projection transform of raster data is achieved successfully.
然后提出一种新的存储栅格数据的表结构，对河道的冲淤预测方法进行了初步地探讨，为快速有效地分析河道冲淤规律奠定了基础。
Then, a new table structure to store the raster data is put forward, so that the methods for the erosion-deposition prediction are discussed initially to improve the work efficiency.
本文以名义尺度下的栅格数据作为研究对象，通过定义空间自邻接指数提出一种空间自相关测度算法，并将其应用到土地利用数据分析中得到了较好的试验结果。
While defining the spatial auto-relation index and an algorithm for spatial autocorrelation measurement is propsed, and the fair results are obtained in the experiment with the land use data.
空间数据处理内容广泛，本文选择空间数据处理领域的矢量数据结构与栅格数据结构之间的相互转换、不同空间数据格式的数据转换方法等几个方面作为研究的内容。
Some parts have been researched which are approach for mutual transferring between vector structure and raster structure, the switchover of different data format. This thesis has three parts.
空间数据处理内容广泛，本文选择空间数据处理领域的矢量数据结构与栅格数据结构之间的相互转换、不同空间数据格式的数据转换方法等几个方面作为研究的内容。
Some parts have been researched which are approach for mutual transferring between vector structure and raster structure, the switchover of different data format. This thesis has three parts.
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