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软件试用 SpaceStat—空间计量模型软件

软件简介


SpaceStat它具备了空间技术统计和空间计量经济的有关功能。SpaceStat提了spatiotemporal和统计工具,包括:探索性空间数据分析(exploratory spatial data analysis);空间计量分析(spatial econometric analyses)和空间权重集和变异函数模型的建立(the creation of spatial weights sets and variogram models)。单独使用SpaceStat或配合Esri的ArcGIS一起使用可以大幅扩展您的GIS分析功能。

软件特点


SpaceStat有以下几大特点:

回归工具
SpaceStat的aspatial回归工具(aspatial regression tools),包括线性,泊松(Poisson)和logistic回归,允许您在一个软件包包进行从时空数据探索(spatio-temporal data exploration)到模型构建的操作。除了回归工具的这些"简单"形式,SpaceStat还允许你使用模型构建工具,如最佳子集,向前和向后逐步回归。所有这些工具都可以应用到数据集,包括多次(multiple times),它允许你快速评估模型的拟合和其他参数如何随时间而改变。




改善的差异统计(Disparity Statistics)
SpaceStat让您在四种不同的方式为您的数据:从一个点或多边形的地理聚集改变空间的支持不同的点或多边形地理,或从点到多边形,反之亦然。




导入Microsoft Office Excel文件数据
为了简化导入数据的过程,我们现在提供了直接从Microsoft Office Excel导入数据的选项。您可以使用此选项引入一个新的 point geography,或添加数据集到到您SpaceStat项目中的现有的地域(geographies )。




复制图形,地图和表格到剪切板
地图/图形菜单现在包括一个选项,复制一个给定的图形或地图映射到剪贴板,以便您可以将其粘贴到文字处理或演示文件中(例如,Microsoft PowerPoint),可以在不同的软件程序中打开。您可以使用Edit菜单上的复制选项来对表格执行类似的功能,直接复制表格到Microsoft Excel表格中。




SpaceStat 和 ArcGIS 性能对比




英文概述



SpaceStat Overview——
StaceStat allows you to view the data in your project, display these data in maps and graphs, and to perform statistics to evaluate spatial patterns. What makes this software unique is that it is a space-time information system. In StaceStat, time is a dimension of the data, rather than an attribute linked to each object in the dataset. Thus, almost all views of the data can be animated, from maps to histograms to tables. But, StaceStat does more than just animate your data, it allows you to make statistical inferences about patterns in the data as well. StaceStat allows you to view, interact with and statistically analyze your space-time data so that you can make informed decisions.

Over the past year, we have added powerful new tools for manipulating data and performing statistical analyses, including several which are not available in any other software package. In addition, we have improved data import by adding the option to import geographies or attribute data directly from Microsoft Office Excel files, and made it easy to copy graphs or maps from SpaceStat and paste them into other programs. Here we provide an overview of the features we have availble in SpaceStat.

Regression tools——
Although certainly not unique to SpaceStat, aspatial regression tools, including linear, Poisson, and logistic regression allow you to go from spatio-temporal data exploration to model building within one software package. In addition to the "simple" forms of these regression tools, SpaceStat also allows you to use model building tools such as best subset, and forward and backward stepwise regression. All of these tools can be applied to datasets that encompass multiple times, which allows you to quickly evaluate how model fit and other parameters change over time.

In SpaceStat, you can also perform geographically-weighted regression (local, rather than global regression analyses); as with aspatial regression, your GWR models can have a linear, Poisson, or logistic form.

Using SpaceStat, you can not only build both spatial and aspatial models, you can run models developed using one method (i.e., as an aspatial linear model) in another form (i.e., aspatial Poisson, or linear GWR), and use our wealth of data exploration tools to explore how this change in tools influences the results of your analysis over all of the time periods in your datasets.

Improved Disparity Statistics——
Following the publication of advances in quantifying health disparities by Goovaerts et al. (2007), we are the first to make these advances available in a software package.

New ways to Aggregate Data/Change your Spatial Data Support——
SpaceStat allows you to aggregate (change the spatial support) for your data in four different ways: from a point or polygon geography to a different point or polygon geography, or from points to polygons and vice versa.

Import data as Microsoft Office Excel files——
To simplify the process of importing data, we now provide the option of importing data directly from Microsoft Office Excel. You can use this option to bring in a new point geography, or to add datasets to existing geographies in your SpaceStat project.

Copy Graphs, Maps, and Tables to the Clipboard——
The Map/Graph menus now include an option to copy an image of a given graph or map to the clipboard so that you can paste the image into word processing or presentation (e.g., Microsoft Powerpoint) files open in different software programs. You can perform a similar function with the copy option in the Edit menu for tables, and copy tabular information directly into Microsoft Excel.