What's New in
TerraSeer STIS? What's New in
TerraSeer STIS?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 STIS and paste them into other programs. Here we provide an overview of the features we have added to STIS.
The biggest change over the past year has been the addition of both aspatial and geographically-weighted regression (often abbreviated "GWR"). Although certainly not unique to STIS, 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, STIS 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.
Now in STIS, 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.
In STIS, 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. Coming soon -- the ability to apply a regression model built with datasets from one geography to the same type of datasets for a different geography!
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.
STIS now 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.
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 STIS project.
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.
We are always working to keep STIS on the cutting-edge of space-time analysis. Coming soon: variograms, kriging, including Poisson kriging, and several new tools for evaluating clusters and geographic boundaries!
