modeling

问题 Given data of the following form myDat = structure(list(Score = c(1.84, 2.24, 3.8, 2.3, 3.8, 4.55, 1.13, 2.49, 3.74, 2.84, 3.3, 4.82, 1.74, 2.89, 3.39, 2.08, 3.99, 4.07, 1.93, 2.39, 3.63, 2.55, 3.09, 4.76), Subject = c(1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 5L, 5L, 5L, 6L, 6L, 6L, 7L, 7L, 7L, 8L, 8L, 8L), Condition = c(0L, 0L, 0L, 1L, 1L, 1L, 0L, 0L, 0L, 1L, 1L, 1L, 0L, 0L, 0L, 1L, 1L, 1L, 0L, 0L, 0L, 1L, 1L, 1L), Time = c(1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L,

问题 Does anyone know how to draw a switch statement in a graphical design? For example: If statement is a diamond shape Loops are a square with a circle inside....? Also is there a technical name for this kind of graphical representation? I have searched the internet and Java graphical designs do not seem to come up at all. 回答1: Here's how a switch statement is represented. A simple Switch Flowchart search on the internet can give you this result. 来源： https://stackoverflow.com/questions/22067090

问题 I am looking to run Linear Regression on the below data frame. test<-data.frame(abc=c(2.4,3.2,8.9,9.8,10.0,3.2,5.4), city1_0=c(5.3,2.6,3,5.4,7.8,4.4,5.5), city1_1=c(2.3,5.6,3,2.4,3.6,2.4,6.5), city1_2=c(4.2,1.4,2.6,2,6,3.6,2.4), city1_3=c(2.4,2.6,9.4,4.6,2.5,1.2,7.5), city1_4=c(8.2,4.2,7.6,3.4,1.7,5.2,9.7), city2_0=c(4.3,8.6,6,3.7,7.8,4.7,5.8), city2_1=c(5.3,2.6,3,5.4,7.8,4.4,5.5)) Dataframe "test" is sample of the data. But original data frame contains 100 columns. I want to create a script

问题 I need to create UML class diagram online and to generate Java code from it. Drawing tools such as cacoo don't allow to generate code as they are not real UML modelers. Does anybody know an UML online tool that generates Java code? Thanks for your help~~ 回答1: You should take a look at GenMyModel an UML online tool GenMyModel allows you to create an UML class diagram online and generate Java code from it. 回答2: There is one generator that allows you to produce Java source code from a UML model.

问题 I need to create UML class diagram online and to generate Java code from it. Drawing tools such as cacoo don't allow to generate code as they are not real UML modelers. Does anybody know an UML online tool that generates Java code? Thanks for your help~~ 回答1: You should take a look at GenMyModel an UML online tool GenMyModel allows you to create an UML class diagram online and generate Java code from it. 回答2: There is one generator that allows you to produce Java source code from a UML model.

问题 I've looked around for a good model format to use in a game I'm building. Its a single player RPG that runs on any platform. I looked at md2,3, and 5 formats, obj, and 3ds, but I couldn't really find what I was looking for. All I need is a 3d model with animation that I can apply textures to. I know most of the list above does that. All I'm looking for is opinions on which one is better/easier to work with. Thanks 回答1: The .ply format is simple and not too hard to code an interpreter for if

问题 I've looked around for a good model format to use in a game I'm building. Its a single player RPG that runs on any platform. I looked at md2,3, and 5 formats, obj, and 3ds, but I couldn't really find what I was looking for. All I need is a 3d model with animation that I can apply textures to. I know most of the list above does that. All I'm looking for is opinions on which one is better/easier to work with. Thanks 回答1: The .ply format is simple and not too hard to code an interpreter for if

问题 I'm working on a project for a grad class and still having trouble wrapping my head around them. What is the difference between a sequence diagram (SD) and a system sequence diagram (SSD) ? And in what order should they be developed when working on a systems development project? 回答1: A System sequence diagram visualizes a use case, while a sequence diagram visualizes a method of a class. The elements participating (exchanging messages) in a system sequence diagram are Actors and Systems. The

问题 I have a question that I've been trying to answer for some time now but can't figure out: How do you design, or divide up, CouchDB documents? Take a Blog Post for example. The semi "relational" way to do it would be to create a few objects: Post User Comment Tag Snippet This makes a great deal of sense. But I am trying to use couchdb (for all the reasons that it's great) to model the same thing and it's been extremely difficult. Most of the blog posts out there give you an easy example of how

问题 I need to create different page views for different types of users. I already asked that here: How to create pages with different permissions' views And even though Aldeel's answer works, it does not seem the best solution for me. I'll explain why. I'll try to explain what I need very detailed and hopefuly some of you will be able to help me out :D I need to show different views but it's not only like that. Each user can have access to different parts of the page. I'll give an example: