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Questions tagged [sample]

Small part of or a selection from something (code, logs, data etc.), intended to show the structure, style, or nature of the whole.

In statistics, the process of generating random samples is called .

In and some other programming languages, the function sample performs random sampling of a set with or without replacement.

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How to randomly sample from a Scala list or array?

I want to randomly sample from a Scala list or array (not an RDD), the sample size can be much longer than the length of the list or array, how can I do this efficiently? Because the sample size can be very big and the sampling (on different…
Carter
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Sample project plugin jquery File Upload plugin implemented in ASP .NET MVC3

I need to implement in my project ASP .NET MVC3 the jQuery file upload plugin: http://blueimp.github.com/jQuery-File-Upload/ I have been Googling and I haven't found a whole project, only pieces of code. I don't know how to implement it. Can someone…
rspaz16
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Shuffle Vector in R, But Identical Elements Should Have Minimum Distance

I want to randomize/shuffle a vector. Some of the vector elements are identical. After shuffling, identical elements should have a minimum distance of three (i.e. two other elements should be between identical elements). Consider the following…
Joachim Schork
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`sample()` gives different values with same `set.seed()`

I was creating some random samples and plotting them and noticed a strange behavior. Sampled values were different after loading ggplot2: set.seed(111) library(ggplot2) sample(1:10, 10) # [1] 8 4 5 3 7 1 6 2 10 …
N8TRO
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How to convert sample rate from AV_SAMPLE_FMT_FLTP to AV_SAMPLE_FMT_S16?

I am decoding aac to pcm with ffmpeg with avcodec_decode_audio3. However it decodes into AV_SAMPLE_FMT_FLTP sample format (PCM 32bit Float Planar) and i need AV_SAMPLE_FMT_S16 (PCM 16 bit signed - S16LE). I know that ffmpeg can do this easily with…
frankish
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jQuery-Mobile Meteor sample integration and/or integration guidelines

I'm impressed by Meteor and would like to use it with jQuery-Mobile. I'd like to know if somebody has already built a sample integration app. If not, some guidelines would be great. Regards, Cédric
Cédric Vidal
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Random sample of rows from subset of an R dataframe

Is there a good way of getting a sample of rows from part of a dataframe? If I just have data such as gender <- c("F", "M", "M", "F", "F", "M", "F", "F") age <- c(23, 25, 27, 29, 31, 33, 35, 37) then I can easily sample the ages of three of the…
Henry
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What happens when prob argument in sample sums to less/greater than 1?

We know that prob argument in sample is used to assign a probability of weights. For example, table(sample(1:4, 1e6, replace = TRUE, prob = c(0.2, 0.4, 0.3, 0.1)))/1e6 # 1 2 3 4 #0.2 0.4 0.3 0.1 table(sample(1:4, 1e6, replace = TRUE,…
Ronak Shah
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Looking for Webstart Maven Plugin sample application

I am looking for source code for a complete application that uses the Webstart Maven Plugin. Any ideas?
Ralph
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Pandas sample with weights

I have df and I'd like to make some sampling from it with respect to distribution of some variable. Let's say df['type'].value_counts(normalize=True) returns: A 0.3 B 0.5 C 0.2 I'd like to make something like sampledf =…
Bear
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Android Navigation Drawer bug using the sample

I'm trying to implement the navigation drawer pattern based on my app. I downloaded the sample code from here and i ran it and 90 % of the times the drawer works ok, but sometimes the drawer gets stuck when i try to open it. I have a way of…
xlar8or
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{ Qt5.0.2/QML/QtQuick2.0/C++ } Example Projects that run without errors?

My setup is Qt5.0.2 MinGW 32-bit. I am looking for { Qt5.0.2 / QML / QtQuick2.0 / C++ } code project examples (not Qt Quick 1.0) that have actual C++ classes or at least a main.cpp . I ran through the web, browsed all examples I could possibly…
iviv
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How to do one-way ANOVA in R with unequal sample sizes?

Trying to learn R. A question from an old stats text want's to know if there is a difference in break times at different construction sites. Trouble is, the text decided that each site employs a different number of workers. So, I am stuck and…
tora0515
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Why does reading an image from OpenCV python samples giving error where as it does not give error in c++?

I am trying to read an image in opencv python import cv2 import numpy as np # Read images image=cv2.imread(cv2.samples.findFile("lena.jpg")) cv2.imshow("image",image) cv2.waitKey(0) and it gives the following error [ WARN:0] global…
Gourav Roy
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Can Web Components be used to create custom input elements?

How is it/(or just "is it?") possible to create a Web Component that can be placed inside a form and act just as any input element, that's sent to the server on submit? In other words, can Web Components be used to create custom input elements?
Lars C. Magnusson
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