Publications by Ryland Matis
SelectColumnsFilterRows
Video: Selecting Columns and Filtering Rows Example Selecting Columns By Name data("ChickWeight") head(ChickWeight) ## weight Time Chick Diet ## 1 42 0 1 1 ## 2 51 2 1 1 ## 3 59 4 1 1 ## 4 64 6 1 1 ## 5 76 8 1 1 ## 6 93 10 1 1 #Selecting Columns #By Name dat <- C...
427 sym
BasicsProgrammingR
Baic programming in R: R is a vector based language not needing loops which we use in languages such as C, C++, MATLAB etc. Lets take an example of adding two vectors together and put the result in a vector z. # Defining the vectors x<-c(1,2,3,4) y<-c(5,6,7,8) Vector addition using loop: # Starting with a blank vector z z<-c() for(i in 1:4){z<-c(z,...
885 sym
Assignment3mod
1 Load Packages Be sure to have the package readxl installed on your computer. library(readxl) 2 Read in Data We are going to read in the data from the Radiology Workflow from the hospital for the years 2016-2017. dat<-read.csv("https://raw.githubusercontent.com/tmatis12/datafiles/main/RadDat_IMSE.csv") head(dat) ## Unique.Identifier PatientAge ...
1054 sym R (5437 sym/18 pcs) 2 img
Assigment3-IE2341
1 Load Packages Be sure to have the package readxl installed on your computer. library(readxl) 2 Read in Data We are going to read in the data from the Radiology Workflow from the hospital for the years 2016-2017. dat<-read.csv("https://raw.githubusercontent.com/tmatis12/datafiles/main/RadDat_IMSE.csv") head(dat) ## Unique.Identifier PatientAge ...
1054 sym R (5433 sym/18 pcs) 2 img
Example-IE2341-Summer2004
1 First Header Some intro material 1.1 First Subheader plot x and y x<-c(1,2,3) y<-c(4,5,6) plot(x,y) 1.2 second subheader some more stuff 2 Complete R Code It is a good idea to include this at the end of every RMarkdown document x<-c(1,2,3) y<-c(4,5,6) plot(x,y)...
217 sym 1 img
DOE Cookbook
1 Two-Sample T-Test (pooled and unpooled) (Alejandro Lopez, Diego Polanco Lahoz, Rumman Rezvy) For the Two-Sample T-test we would have independent samples from two populations and we want to compare their populations means, to check if these are equal or not. 1.1 Assumptions The populations follow a normal distribution. \[ (Population_1\, \& \, ...
97357 sym R (50992 sym/249 pcs) 85 img 6 tbl
Test document
1 First Header Insert inline LaTex between dollar signs, e.g. \(\mu\). A great online equation editor for LaTex may be found at CodeCogs (https://latex.codecogs.com/eqneditor/editor.php) 1.1 First Subheader Can insert LaTex on its own line between double dollar signs, e.g. \[ x+\frac{1}{2}=\gamma_1 \] Text between double stars is bold. Bulleted L...
1054 sym 1 img 1 tbl
RylandRadiology
X-Ray Orders This document looks at some data involving the X-Ray orders at a major hospital. STAT Orders ## mean(Ordered.to.Complete...Mins) ## 1 32.42555 ## sd(Ordered.to.Complete...Mins) ## 1 24.91425 This set of data looks at all the STAT X-Ray orders from the data set RadDat.csv. The mean am...
1108 sym R (1721 sym/5 pcs) 5 img
Test 2 Document
You can put chunks of R code by putting three backticks at the beginning and end of the chunk. You need to give each chunk a unique name in the {} Echo The echo command tell R whether or not to print the code that generated the result. Here is an example with echo=FALSE ## [1] 0.8830421 and here is an example with echo=TRUE x<-rnorm(100) y<-2*x+...
2048 sym R (1699 sym/9 pcs) 1 img
Test Document
You can put chunks of R code by putting three backticks at the beginning and end of the chunk. You need to give each chunk a unique name in the {} Echo The echo command tell R whether or not to print the code that generated the result. Here is an example with echo=FALSE ## [1] 0.8857479 and here is an example with echo=TRUE x<-rnorm(100) y<-2*x+...
1998 sym R (1643 sym/7 pcs) 1 img