By Brian S. Everitt
Because the first variation of this ebook used to be released, S-PLUS has advanced markedly with new tools of study, new graphical systems, and a handy graphical consumer interface (GUI). this day, S-PLUS is the statistical software program of selection for plenty of utilized researchers in disciplines starting from finance to medication. Combining the command line language and GUI of S-PLUS now makes this e-book much more appropriate for green clients, scholars, and an individual with no the time, persistence, or history had to battle through the various extra complex manuals and texts at the market.The moment version of A guide of Statistical Analyses utilizing S-Plus has been thoroughly revised to supply a very good creation to the most recent model of this robust software program procedure. each one bankruptcy specializes in a specific statistical procedure, applies it to 1 or extra facts units, and exhibits find out how to generate the proposed analyses and photos utilizing S-PLUS. the writer explains S-PLUS features from either the home windows® and command-line views and obviously demonstrates how one can swap among the 2. This instruction manual presents the proper car for introducing the intriguing chances S-PLUS, S-PLUS 2000, and S-PLUS 6 carry for info research.
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Extra resources for A Handbook of Statistical Analyses using S-Plus, Second Edition
Why and when should you use a redirect? If you have ﬁnished handling a form submission in an Action and then forward to the next page, you might notice that the URL displayed in the web browser is the path to the previous action even though you are on a new JSP. If the previous page had a form on it and you click the browser’s refresh button, you will be prompted to resubmit the form, even if the new JSP doesn’t have a form on it. jsp" redirect="true" /> There are two important points to consider when using redirect: performance (because of the extra client round trip), and the ability to use request attributes to communicate information from the Action to the JSP.
9. xml. 10. Build, test, deploy. We identiﬁed our sample application as the CD Manager that we’ll use throughout the rest of the book, and we started planning our development of that application. chapter 4 Creating and Building Actions This chapter walks through the creation of Struts Action classes and shows how they are used. An Action is deﬁned as a logical request that takes place in your web application. All the following examples are Actions: logging on, performing a search, displaying a listing, and logging oﬀ.
You don’t want someone to be able to bookmark a page for an Action while they are logged into an application and come back at a later time when they are logged out. This would be a serious security risk. It also could happen that someone leaves their browser inactive and their session times out. The way to avoid this type of access from happening is to have a check (another good method for the base class) for an active session. If the session is not valid, then the request can be forwarded back to a Logon JSP, preventing the user from accessing anything further.