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[PDF File]A SHORT R TUTORIAL
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A single number or string of text is the simplest object and is known as a scalar. [Note that a scalar in R is simply a vector of length one; there is no distinct object type for a scalar, although that is not critical for what follows.] A Short R Tutorial 2.
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[PDF File]Exploring Data and Descriptive Statistics (using R)
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• R is a programming language use for statistical analysis and graphics. ... # Number of missing per row colSums(is.na(mydata)) # Number of missing per column/variable rowMeans(is.na(mydata))*length(mydata) # No. of missing per row (another way) # length = num. of variables/elements in an object # Convert to missing data
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[PDF File]Sequence Analysis with R and Bioconductor - Overview
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Sequence Analysis with R and Bioconductor String Handling Utilities in R’s Base Distribution Slide 6/23 Random Sequence Generation Create any number of random DNA sequences of any length.
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[PDF File]A SHORT R TUTORIAL - University of Georgia
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number or string of text is the simplest object and is known as a scalar. [Note that a scalar in R is simply a vector of length one; there is no distinct object type for a scalar, although that is not critical for what follows.] A Short R Tutorial 2.
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[PDF File]Introduction to R: Basic string and DNA sequence handling
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Introduction to R: Basic string and DNA sequence handling 4 promoter of the gene ’Prdx1’ as an example here. Download a gene sequence Go to genome.ucsc.edu and download 3000 bp upstream of the transcription start site of the gene ’Prdx1’. !
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[PDF File]Digital to Analog Converter
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– Resistor-string DAC – N-Bit Binary weighted DAC – R-2R Ladder DAC • Specifications of DAC • Applications. 2 What is a DAC? • Digital-to-Analog Converter: An electronic device, often an integrated circuit, that converts a digital number into a corresponding analog voltage or current. • Relation between analog signal and digital ...
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[PDF File]Working with Time Series Data in R - University of Washington
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methods in R are not designed for handling time series data. Hence, there is a need for a flexible time series class in R with a rich set of methods for manipulating and plotting time series data. Base R has limited functionality for handling general time series data. For example, univariate and
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[PDF File]Introduction to R - Department of Statistics
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The nchar()function returns the number of characters in a character string. When applied to numeric data, it returns the number of characters in the printed representation of the number. The length()function returns the number of elements in its argument. Note …
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[PDF File]Algorithms - Princeton University
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Number of digits R in alphabet. Alphabets 11 604 CHAPTER 6! Strings holds the frequencies in Count is an example of a character-indexed array. With a Java String, we have to use an array of size 256; with Alphabet, we just need an array with one entry for each alphabet character. This savings might seem modest, but, as you will
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[PDF File]String manipulation with stringr : : CHEAT SHEET
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positions of pattern matches in a string. Also str_locate_all(). str_locate(fruit, "a") str_count(string, pattern) Count the number of matches in a string. str_count(fruit, "a") Manage Lengths TRUE TRUE FALSE TRUE 1 2 4 0 3 1 2 start end 2 4 4 7 NA 3 4 str_length(string) The width of strings (i.e. number of code points, which generally equals
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R number to string