[BlindRUG] Question about R Markdown
Godfrey, Jonathan
A.J.Godfrey at massey.ac.nz
Tue Mar 23 08:58:40 UTC 2021
Hello Niels,
You should be able to "print" from the graph window that opens in R to your View Plus embosser. You will need to watch the size of the window is a good match for your braille paper. You might also make sure that the amount of colour is minimised in your graphics; that is, do not use any "fill" in your histograms for example unless it is a very light colour. (Too much shading will destroy the paper.
I haven't tested printing from HTML as yet, but I wouldn't hope for much. If I was using an embosser in conjunction with a R markdown file, then I'd probably save the graphs in a specified file. In Windows, that can be done with savePlot().
HTH
Jonathan
-----Original Message-----
From: BlindRUG <blindrug-bounces at nfbnet.org> On Behalf Of Niels Luithardt via BlindRUG
Sent: Tuesday, 23 March 2021 9:45 PM
To: Blind R Users Group <blindrug at nfbnet.org>
Cc: Niels Luithardt <niels.luithardt at googlemail.com>
Subject: Re: [BlindRUG] Question about R Markdown
Hello jooyoung,
thank you very much for your help and the file. I'm starting to understand how this all works through the comments.
I have one more question about the tactileR package. I don't have a fuser for swell paper. I have a braille Embosser from ViewPlus Technologies. Can I print out a histogram like this? For that I would need a .brl file or?
Best regards
Niels
2021-03-21 17:23 GMT+01:00, Liz Hare via BlindRUG <blindrug at nfbnet.org>:
> Hi JooYoung,
>
> I did not know about tactileR and I’m very excited about finding out
> if it will work with my embosser. Thank you!
>
> Liz
>
>
>
>> On Mar 21, 2021, at 11:54 AM, JooYoung Seo via BlindRUG
>> <blindrug at nfbnet.org> wrote:
>>
>> Hello,
>>
>> I found some errors in your code. You forgot to enclose the main
>> title, x and y labels with quotations.
>>
>> I hope the following lines of codes could help you.
>>
>>
>> dice <- sample(1:6, 50, replace = TRUE)
>> table(dice)
>> round(table(dice) / 50, digits = 3)
>>
>> # Use BrailleR to get alternative text:
>> library(BrailleR)
>>
>> VI(
>> hist(dice,
>> main = "dice role",
>> xlab = "Number of dice", ylab = "Number of throws when rolling
>> the dice",
>> col = "blue"
>> )
>> # Comment out the following line; otherwise, BrailleR cannot treat
>> this object:
>> # box()
>> )
>>
>> # Create tactile graph using tactileR package developed by JooYoung Seo.
>> # Install package:
>> if (!require(remotes)) {
>> install.packages("remotes")
>> }
>>
>> remotes::install_github("jooyoungseo/tactileR")
>>
>> # Loading tactile package:
>> library(tactileR)
>>
>> # Create tactile graphic by surrounding between two functions like
>> below. The arguments used in this example are all given by default:
>> brl_begin(file = "tactile.pdf", pt = 11, paper = "special", font =
>> "BRL") hist(dice,
>> main = "dice role",
>> xlab = "Number of dice", ylab = "Number of throws when rolling the
>> dice",
>> col = "blue"
>> )
>> box()
>> brl_end()
>> # The braille ready-to-print pdf version will be created in your
>> working directory. Print it out and run the swell touch paper through
>> swell form heating machine.
>> # Note: This function optimizes for both 1111 and 118.5 swell touch
>> papers. When printing a generated braille pdf, just remember two
>> things:
>> # 1. check “Fit” in the print dialog box (the shortcut key is ALT+F).
>> # 2. Check “Landscape” in the print dialog box as well.
>> # For boxplot, you do not need to check the “Landscape,” just leave
>> it as a “Portray.” However, please check the “Fit” all the time.
>>
>>
>>> On 3/21/21, Niels Luithardt via BlindRUG <blindrug at nfbnet.org> wrote:
>>> Hi, I modified my R code and used the histogram function. I hope
>>> this is correct now.
>>>
>>> dice<-sample(1:6,50,replace=TRUE)
>>> table(dice)
>>> round(table(dice)/50,digits = 3)
>>> hist(dice,main=dice role,
>>> xlab=Number of dice,ylab=Number of throws when rolling the dice,
>>> col=blue)
>>> box()
>>>
>>>
>>> The question is how do I embed the code back into the .rmd. Is the
>>> fig.cap in the file absolutely necessary?
>>>
>>> What is the best way to plot histograms if you want to use brailler?
>>>
>>> Kind Regards
>>>
>>> Niels
>>>
>>>
>>> 2021-03-21 10:26 GMT+01:00, Niels Luithardt
>>> <niels.luithardt at googlemail.com>:
>>>> Hello Ben,
>>>>
>>>> About your questions:
>>>>
>>>> You ask if it is a script file.
>>>>
>>>> Yes, my example exists as an .r file. It has the name dicerole.r
>>>> .But I don't know if that is important. To test the code, I copy
>>>> the code from the file and paste it directly into the R terminal. I
>>>> know that I could also start the file with the source command.
>>>>
>>>> You ask how I use R.
>>>>
>>>> As I indicated I use the R terminal, I don't use R Studio or any
>>>> other development environment. That may come later.
>>>>
>>>> On the topic of output format:
>>>>
>>>> To start, html is just fine. I want to get as much information as
>>>> possible from the html file. But in principle other output formats
>>>> are interesting for me.
>>>>
>>>> E.g. I would like to print the graphic created with the help of R
>>>> with a Braille embosser. Is that possible in a quick and easy way?
>>>>
>>>> Can the graphics be automatically generated as .stl and printed
>>>> with a 3D printer?
>>>>
>>>> Can the data be sonified?
>>>>
>>>> I want to find out what is possible with Brailler. I want to test
>>>> the limits. I want to find out what else is possible.
>>>>
>>>> Regards
>>>>
>>>> Niels
>>>>
>>>>
>>>> 2021-03-20 15:30 GMT+01:00, Ward, Elizabeth - wardex via BlindRUG
>>>> <blindrug at nfbnet.org>:
>>>>> Hi Niels,
>>>>>
>>>>> We need to know a few things about how you are using R before we
>>>>> can help with this. Is this a script file? Are you using the
>>>>> console or RStudio or emacs or something else? Also, would you
>>>>> like your output to be HTML?
>>>>>
>>>>> Best Wishes,
>>>>> Ben
>>>>>
>>>>> -----Original Message-----
>>>>> From: BlindRUG <blindrug-bounces at nfbnet.org> On Behalf Of Niels
>>>>> Luithardt via BlindRUG
>>>>> Sent: Friday, March 19, 2021 5:45 PM
>>>>> To: blindrug at nfbnet.org
>>>>> Cc: Niels Luithardt <niels.luithardt at googlemail.com>
>>>>> Subject: [BlindRUG] Question about R Markdown
>>>>>
>>>>> CAUTION: This email originated from outside of JMU. Do not click
>>>>> links or open attachments unless you recognize the sender and know
>>>>> the content is safe.
>>>>> ________________________________
>>>>>
>>>>> Hello,
>>>>>
>>>>> I have a question about RMarkdown:
>>>>>
>>>>> I want to create a .rmd file and I have thought of the following
>>>>> example for
>>>>> it:
>>>>>
>>>>> dice<-sample(1:6,50,replace=TRUE)
>>>>> table(dice)
>>>>> round(table(dice)/50,digits = 3)
>>>>> barplot(table(dice),width=1,col="blue",
>>>>> cex.axis=2.8,cex.names=2.8) What must be the rest of the markdown
>>>>> file for my code to be processed successfully?
>>>>>
>>>>> I would be very pleased about answers!
>>>>>
>>>>> Kind regards
>>>>>
>>>>> Niels
>>>>>
>>>>> _______________________________________________
>>>>> BlindRUG mailing list
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>>>>> More information and useful links about using R as a blind person
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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
>>>>>
>>>>
>>>
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>>> More information and useful links about using R as a blind person
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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
>>>
>>
>>
>> --
>> --------------------
>> JooYoung Seo, CPACC
>> Ph.D. Candidate (ABD),
>> RStudio's Trusted Data-Science Instructor
>> Learning, Design, and Technology
>> Learning and Performance Systems
>> The Pennsylvania State University
>> Site: https://jooyoungseo.com/
>> Phone: +1 (814) 777-5825
>> E-mail: jzs323 at psu.edu
>>
>> _______________________________________________
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>> More information and useful links about using R as a blind person can be
>> obtained at:
>> http://R-Resources.massey.ac.nz
>>
>> 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
>
>
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> More information and useful links about using R as a blind person can be
> obtained at:
> http://R-Resources.massey.ac.nz
>
> 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
>
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