[BlindRUG] Sharing Successful Braille Labelling Test

[Godfrey, Jonathan]

Hello,

I used your example and found a few problems, some of which I have an answer for and some I don’t.


First, the braille font isn’t friendly with the pdf creation inside R. This means we will need to use an alternative format for distribution. I suggest using SVG.

Second, the braille I got when I embossed the example image was quite small. Too small for regular users and I only managed to assess that the braille was correct because I knew what to expect. This might be resolved with the use of a better font than the one used in the example, but it will be better to hard code the font size to be what is desired. (I’m looking into that.)

Finally, we will probably want to rotate the braille so that it is all embossed horizontally. The y-axis tick marks are 90 degrees out at present. This is achievable using standard R graphics commands for any print.

As an aside, I also have the problem of no y-axis label being printed so the image is not fitting properly on the paper I am using. Some work to do at my end I expect, but I am confident that my embosser is using default settings so perhaps anyone else using a Premiere 100 would have the same problems.

Jonathan



From: BlindRUG [mailto:blindrug-bounces at nfbnet.org] On Behalf Of JOOYOUNG SEO via BlindRUG
Sent: Friday, 12 June 2015 10:54 a.m.
To: 'Blind R Users Group'
Cc: JOOYOUNG SEO
Subject: [BlindRUG] Sharing Successful Braille Labelling Test

  Hello Dr. Godfrey,
  I am writing to share my test with you.
  Today, I worked with my colleague to use braille font in R graphics and it was successful and an eye-opener.
  I hope our findings could contribute to updating future BrailleR.

  1. I downloaded this font<http://www.fontspace.com/philing/braille-normal> and installed it.
  2. The following is the syntax I used to get the braille-labled histogram:

chooseCRANmirror(ind=1)

install.packages("extrafont")

library(extrafont)

data(airquality)

attach(airquality)

font_import(pattern="BRAILLE1.ttf", prompt=FALSE)
windowsFonts(A=windowsFont("Braille Normal"))

hist(Ozone, family="A")
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  3. Problem and question:
  A. I cannot save the graphic as PDF.
  B. Do you think we can also get free grade2 braille font? This is grade1.
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  Thank you.
  Best Regards,
       JooYoung
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