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r - get first entries in rows of list?
    I have a list, with 3 "columns": test = list(1:100, 1:100,1:100) How can I access the e.g. ... differs a lot between data.frames and lists. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.3k views
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r - Logistic Regression on factor: Error in eval(family$initialize) : y values must be 0 <= y <= 1
    Not able to fix the below error for the below logistic regression training=(IBM$Serial<625) data=IBM[!training,] ... 002480478 -0.001636046 Up 4 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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413 views
1 answer
r - tidyr - spread multiple columns
    I'm preparing data for a network meta-analysis and I am having difficult in tyding the columns. If I have ... d really appreciate some help... See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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341 views
1 answer
r - Levenshtein type algorithm with numeric vectors
    I have two vectors with numeric values. Such as v1 <- c(1, 3, 4, 5, 6, 7, 8) v2 <- c(54, 23, 12 ... be a solution for me. Thanks for your help. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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355 views
1 answer
r - How to split a vector by delimiter?
    I have a vector of integer e.g. c(1,2,0,3,4) and I want 0 to be a delimiter and get list(c(1,2), ... )). Is there any libary function I can use? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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395 views
1 answer
r - twitteR throws Forbidden error after entering twitter API PIN
    I am trying to analyze some tweets using R and twitteR package. The handshake and registration code seems to work properly ... : [1] tools_3.0.2 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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292 views
1 answer
r - Function for polynomials of arbitrary order (symbolic method preferred)
    I've found polynomial coefficients from my data: R <- c(0.256,0.512,0.768,1.024,1.28,1.437,1. ... rewritten for every new polynomial degree NN? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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422 views
1 answer
r - Is there something like a pmax index?
    I have a data frame with the following data: date=strptime(c(20110101,20110102,20110103,20110104,20110105,20110106 ... find the answer anywhere. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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563 views
1 answer
r - How to set Bin Width With geom_bar stat="identity" in a time Series plot?
    I would like to plot a time series using bar charts and have the Bin Width set to 0.9. I cannot seem to ... ("myYlabel") + ggtitle("myTitle") See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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423 views
1 answer
r - Convert Excel numeric to date
    I have a vector of numeric excel dates i.e. date <- c(42963,42994,42903,42933,42964) The output am I ... help either The excel version is 2010 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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337 views
1 answer
r - Do you reassign == and != to isTRUE( all.equal() )?
    A previous post prompted me to post this question. It would seem like a best-practice to reassign == to isTRUE ... not defaulting to all.equal? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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273 views
1 answer
r - How to obtain all combinations of the columns of a data frame taken by 2?
    Suppose I have this data frame: matrix(c(2,4,3,1,5,7,1,2,3,5,8,2,4,5,1,1,3,6,1,3,4,5,6,1),nrow=6 ... ,V3 V2,V4 V3,V4 Any idea of how to do this? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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384 views
1 answer
r - Why does withCallingHandlers still stops execution?
    It seems that withCallingHandlers doesn't actually catch the error the way that tryCatch does and the script still ... context of tryCatch(). See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
423 views
1 answer
r - Display a summary line per facet rather than overall
    I am trying to do something similar to this question, but hoping to do it in a single block rather than ... image editor.) Is this possible? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
494 views
1 answer
r - Increase space between legend keys without increasing legend keys
    This is a follow-up on https://stackoverflow.com/questions/32275113 The problem is to tweak the legend elements to ... 6 inside the color guide. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
620 views
1 answer
r - Creating a vertical color gradient for a geom_bar plot
    I have searched and searched, but I cant seem to find an elegant way of doing this! I have a dataset Data ... in a super super ugly way. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
514 views
1 answer
r - ggplot2: Creating themed title, subtitle with cowplot
    I have a list of data frames that I use to make a list of ggplots, and then assemble into a grid of plots ... type = "title") + theme_georgia() See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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274 views
1 answer
r - Changing how output is printed to the console
    When I print something directly to the console (type some variable name, such as x, rather than using the print ... is lost in the prettifying.) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
407 views
1 answer
r - Split character string multiple times every two characters
    I have a character column in my dataframe that looks like df<- data.frame(a=c("AaBbCC","AABBCC","AAbbCC")) ... strings that are of length >10. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
632 views
1 answer
r - How to pop up the graphics window from Rscript?
    I'm using Rscript to run a plot as follows: x=1:10 y=1:10 plot(x,y) I expect this code to ... to popup that plot automatically on execution? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
951 views
1 answer
r - Removing text containing non-english character
    This is my sample dataset: Name <- c("apple firm","苹果 firm","?pple firm") Rank <- c(1,2,3 ... -english characters instead of the whole queries. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
284 views
1 answer
r - Remove all unique rows
    I am trying to figure out how to remove all unique rows, from a data frame, but if it has a duplicate, I ... rows that do not have a duplicate? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
231 views
1 answer
r - Getting the minimum of the rows in a data frame
    I am working with a dataframe that has 65 variables in it. The first variable catalogs a person, and the ... would be much appreciated. Thanks. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
364 views
1 answer
r - Extract names of dataframes passed with dots
    One can use deparse(substitute()) combination to extract the parameter name inside the function like this function ... of the first object. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
246 views
1 answer
r - why "character is often preferred to factor" in data.table for key?
    From data.table manual: In fact we like it so much that data.table contains a counting sort algorithm for ... do counting sort than character? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
283 views
1 answer
r - Do I need to reshape this wide data to effectively use ggplot2?
    I have a data.frame that looks like Year Crustaceans Cod Tuna Herring Scorpion.fishes 1 1950 58578630 2716706 ... would be much appreciated. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
697 views
1 answer
r - Assign color to 2 different geoms and get 2 different legends
    How can I make ggplot2 give a separate legend for different geoms that both use color to represent 2 different ... "orange", "purple")) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
351 views
1 answer
r - Select columns by class (e.g. numeric) from a data.table
    Why doesn't this work with data.table? It works with data.frame. Is there a way to do this with a data table ... v2 v3 v4 TRUE TRUE TRUE FALSE See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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