sample

问题 I can not find the android samples which must be in GitHub by the information i read in android developer. I finnished with Fragments section for example and now i want to see all the full samples. Please someone give me a link. 回答1: You can also import samples directly using Android Studio. 回答2: You can choose a sample in here and just press download http://developer.android.com/samples/index.html EDIT: And here is a link to the google samples github https://github.com/googlesamples 回答3: You

问题 I have a number of subarrays, say 2 (for simplicity), each with the same number of rows and columns. Each spot in the subarrays is occupied by a number in [1, 10]. What I would like to do is move rows randomly between subarrays according to some rate of movement m = [0, 1]. m = 0 corresponds to no movement, while m = 1 means that any rows across all subarrays can be moved. I take inspiration from: How to swap a number of the values between 2 rows in R but my problem is a bit different than

问题 I'm trying to get the sample code of Android 'Google Maps Android API v2' working. I get the project built without errors. However, when I try to run the app on my Galaxy Nexus (connected with usb to my laptop), the app crashes immediately. I filled in my own Maps API Key at the AndroidManifest.xml I built against Android 4.1.2 This is the logging: Unable to resolve superclass of Lcom/example/mapdemo/BasicMapActivity; (66) Link of class 'Lcom/example/mapdemo/BasicMapActivity;' failed Could

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . I've just started with ios development. I've been playing with little code here and there. I thought I should make a small goal to achieve so that I gain some confidence and feel familiar with iOS environment.. I saw this app (see below) and wanted to make a clone (not to sell it). When you see the

问题 I am working with a gigantic person-period file and I thought that a good way to deal with a large dataset is by using sampling and re-sampling technique. My person-period file look like this id code time 1 1 a 1 2 1 a 2 3 1 a 3 4 2 b 1 5 2 c 2 6 2 b 3 7 3 c 1 8 3 c 2 9 3 c 3 10 4 c 1 11 4 a 2 12 4 c 3 13 5 a 1 14 5 c 2 15 5 a 3 I have actually two distinct issues. The first issue is that I am having trouble in simply sampling a person-period file. For example, I would like to sample 2 id

问题 As an example of my data, I have GROUP 1 with three rows of data, and GROUP 2 with two rows of data, in a data frame: GROUP VARIABLE 1 VARIABLE 2 VARIABLE 3 1 2 6 5 1 4 NA 1 1 NA 3 8 2 1 NA 2 2 9 NA NA I would like to sample a single variable, per column from GROUP 1, to make a new row representing GROUP 1. I do not want to sample one single and complete row from GROUP 1, but rather the sampling needs to occur individually for each column. I would like to do the same for GROUP 2. Also, the

问题 Is there a way to change and manipulate the proportion of a variable in SAS in random sampling? Lets say that I have table consisting 1000 people. (500 male and 500 female) If I want to have a random sample of 100 with gender strata - I will have 50 males and 50 females in my output. I want to learn if there is a way to have the desired proportion of gender values? Can ı have a random sample of 100 with 70 males and 30 females ? 回答1: PROC SURVEYSELECT is the way to do this, using a dataset

问题 I am trying to apply a sampling function in a grouped fashion to a data frame, where it should sample n samples from each group, or all group members if the group size is smaller than n . Using dplyr, I first tried library(dplyr) mtcars %>% group_by(cyl) %>% sample_n(2) This works when n is smaller than all the group sizes but does not take the full group when I choose n larger than the group size (note that there are 7 cars in one of the cyl groups): mtcars %>% group_by(cyl) %>% sample_n(8)

问题 I'm relatively new to R. I am wondering how to use the 'survey' package (http://r-survey.r-forge.r-project.org/survey/) to analyze a multiple response question for a weighted sample? The tricky bit is that more than one response can be ticked so the responses are stored across several columns. Example: I have survey data from 500 respondents who were drawn randomly from across 10 districts. Let's say the main question that was asked was (stored in column H1_AreYouHappy): 'Are you happy?' -

问题 Maybe this is stupid question, actually it's appeal, or Qt is just to complicated for me. Here's the thing: I'm used to java when writing client-server application, and it's very simple. I would like to do same things in C++ (I'm very familiar with C++ itself), and I choose to learn Qt. I tried to write some applications in qt, but with partial success. First thing that bothers me is signals and slots. I know how to use them in GUI programming but it confuses me with networking. And there's