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I have a data list with a subject column and a size column like the sample data below. For each subject, I need to divide every value in the size column by the largest value so that the range between size values will be 0 - 1.

Take the sample data below as example, I need to divide every size value for subject 1 by 9 and divide every size value for subject by 8.

As there are a lot of subjects in my real data, is there any approach that I can do this for each subject automatically?

I have a list (dput() below) that has 4 datasets.I also have a variable called 'u' with 4 characters. I have made a video here which explains what I want and a spreadsheet is here.

The spreadsheet is not exactly how my data looks like but i am using it just as an example. My original list has 4 datasets but the spreadsheet has 3 datasets.

Essentially i have some characters(A,B,C,D) and i want to find the proportions of times each character occurs in each column of 3 groups of datasets.(Check video, its hard to explain by typing it out)

I am working on a data frame df which is as below:

Good afternoon ,

Assume we have the following code where i'm trying to plot ggplot2 smoothing curve :

I would greatly appreciate any feedback you might offer regarding the issue I am having with my Word Prediction Shiny APP Code for the JHU Capstone Project.

My UI code runs correctly and displays the APP. (see image and code below)

Challenge/Issue: My problem is that after entering text into the "Text input" box of the APP, my server.R code does not return the predicted results.

Prediction Function:

When I run this line of code in the RConsole -- predict(corpus_train,"case of") -- the following results are returned: 1 "the" "a" "beer"

When I use this same line of code in my server.r Code, I do not get prediction results.

Any insight suggestions and help would be greatly appreciated.

Good afternoon ,

Assume we have the following long data :

Let me be straightforward in telling that it may be a bit complicated for me to explain.

Let's assume that I have a vector with run-lengths of (forward) sliding window sizes.

I am trying to generate an RMarkdown document. I have a list freqsByYear and I would like the user to select from a drop down menu (or some similar method) and this will get stored as Q from here I can pass it to a ggplot function and make the plot as follows.

I have some data that I would like to summarise. I would like to summarise across all of the columns, holding the YEAR column fixed. i.e. For one variable I can do: