Re: [R] Image processing in R for BMI calculation

Hi Paul, If the background is relatively uniform: Then a simple algorithm could be used, to distinguish foreground from background points. Essentially, returning a logical matrix. Otherwise, I'm assuming that suitable pooling/convolution operations could be used for this purpose. Then you could

Re: [R] Making model predictions

Rui Actually yes. I was able to work this into my shiny app this afternoon. Thank you Jeff -Original Message- From: Rui Barradas Sent: Sunday, February 28, 2021 5:26 AM To: reichm...@sbcglobal.net; R-help@r-project.org Subject: Re: [R] Making model predictions Hello, Are you looki

Re: [R] Image processing in R for BMI calculation

Hello Paul Bernal, (sorry, forgot to CC) Re: > Does anyone know about any package for image processing, for example, to > calculate body mass index pased on a picture, silouette or image. This sounds more like a job for the image analysis program NIH Image (the Java-version "ImageJ" being a

Re: [R] Help Required for R Markdown function.

I am sure you can get more done with a caret than a stick. I need a stick for another problem, though. A serious question. I somehow upset my R/RSTUDIO setup while trying to see why a markdown only allowed me to save an HTML version, not PDF and DOC as it used to. It now fails on any such docum

Re: [R] Image processing in R for BMI calculation

Hi Paul, The paper doesn't seem to mention R and the journal doesn't inspire confidence, but the formulas provided give you a start: https://www.researchgate.net/publication/280133090_Calculation_of_Body_Mass_Index_using_Image_Processing_Techniques Jim On Mon, Mar 1, 2021 at 3:39 AM Paul Bernal

[R] How to calculate area and volume of an image with R

On Sun, Feb 28, 2021, 17:49 Paul Bernal wrote: > Hello everyone, > > Is there a way to calculate volume and area of an image with R? How can an image have a volume or an area? I think you need to be more specific. Regards Martin [[alternative HTML version deleted]] __

Re: [R] Help Required for R Markdown function.

Thanks, I'll check it out. On Sun, 28 Feb, 2021, 1:37 AM John Kane, wrote: > The "confusionMatrix" function appears to be from the 'caret' package. > Have you loaded 'caret' with the library(caret) command? > > On Sat, 27 Feb 2021 at 14:20, Kishor raut wrote: > >> Respected Sir, >> >> I Mr Kish

Re: [R] Image processing in R for BMI calculation

1) doing a web search on: "R package to calculate body mass index based on a picture, silhouette or image" did *not* bring up any R packages, but did provide what looked like relevant links to other software and research/discussions. You can decide whether or not this is useful "guidance" (if you

[R] How to calculate area and volume of an image with R

Hello everyone, Is there a way to calculate volume and area of an image with R? Any guidance will be greatly appreciated. Best regards, Paul [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more

[R] Image processing in R for BMI calculation

Hello everyone, Does anyone know about any package for image processing, for example, to calculate body mass index pased on a picture, silouette or image. Any guidance will be greatly appreciated. Best regards, Paul [[alternative HTML version deleted]]

Re: [R] Command history

Oh find ~ -name .Rhistory 2>/dev/null shows 12 file :-)-O vriendelijke groeten/sincères amitiés, el On 2021-02-28 17:17 , Mahmood Naderan-Tahan wrote: > OK. It seems that it depends on where R is launched. > > In my case, I found .Rhistory file in ~/Documents. > > > Regards, > Mahm

Re: [R] Command history

OK. It seems that it depends on where R is launched. In my case, I found .Rhistory file in ~/Documents. Regards, Mahmood From: R-help on behalf of Dr Eberhard W Lisse Sent: Sunday, February 28, 2021 4:06:26 PM To: r-help@r-project.org Subject: Re: [R] Command

Re: [R] Command history

On the Mac it is ~/.Rhistory el On 2021-02-28 15:39 , Mahmood Naderan-Tahan wrote: > Hi > > May I know where is the location of commands we used in R in the history? > > > Regards, > Mahmood-- Dr. Eberhard W. Lisse \ / Obstetrician & Gynaecologist e...@lisse.na / *

Re: [R] Command history

I think it may depend on your operating system. In my case, Ubuntu 20.10, it is a hidden file at /home level. On Sun, 28 Feb 2021 at 08:40, Mahmood Naderan-Tahan < mahmood.nade...@ugent.be> wrote: > Hi > > May I know where is the location of commands we used in R in the history? > > > Regards, >

[R] Command history

Hi May I know where is the location of commands we used in R in the history? Regards, Mahmood [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-he

Re: [R] Making model predictions

Hello, Are you looking for this? newd <- data.frame( Class = '1st', Sex = 'Male', Age = 'Child' ) predict(m, newdata = newd, type = 'raw') #No Yes #[1,] 0.3169345 0.6830655 With the default type = 'class' the result is predict(m, newdata = newd) #[1] Yes #Levels: No Y