[BlindRUG] About BrailleR and Type Conversion

[Jonathan Godfrey]

Hello Amy,

The use of text files has been superseded by R markdown. The BrailleR functions were needed back when we did not have mainstream tools to deliver what we need. 

As for type conversion, I usually suggest to my students that they make a new variable if they want to keep the numeric version and a categorical version. A variable like group won't get used as a numeric variable, but I find it easer to have just one rule for them to follow.

If you use as.factor(Group) in your working without assigning it to a new variable, then it won't alter the original data as imported. It would be better to use GroupF=as.factor(Group) or similar. Even better is to do that as part of your data import:

Library(tidyverse)
MyData = read.csv("OriginalData.csv") %>% mutate(GroupF=as.factor(Group)) %>% glimpse()

You should see both Group and GroupF in the resulting data set.

As an aside, if you only have two groups, the conversion to a factor is unnecessary. I tend to do the conversion and ask how many groups there are later though.

Enjoy,
Jonathan





-----Original Message-----
From: BlindRUG <blindrug-bounces at nfbnet.org> On Behalf Of Amy Albin via BlindRUG
Sent: Thursday, 16 September 2021 11:05 AM
To: blindrug at nfbnet.org
Cc: Amy Albin <amyralbin at gmail.com>
Subject: [BlindRUG] About BrailleR and Type Conversion

Hello All,

I have 2 questions.

The first has to do with how can I get a text file with a history of
both input and output to show others my process? I know BrailleR seems
to have this capability, but I cannot seem to find a working download
link for BrailleR. Any suggestions?

Also I am having a problem with variable type conversion. I have an
imported .csv file with a variable called Group. R classifies Group as
integer, (it's 1 and 2) but since it's a binary variable, I would like
it to be factor. I tried
as.factor(Group)

But when I type

class(Group)

I am told integer. So how do I convert my variable to factor?

Thank you so much.

Best,

Amy Albin
Pronouns: she/her/hers

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More information and useful links about using R as a blind person can be obtained at:
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Look for help using R commands by reading the accessible e-book "Let's Use R Now" compiled by Jonathan Godfrey at:
http://R-Resources.massey.ac.nz/lurn/front.html