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

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

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

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

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

Re: [R-es] HELP!! Expansión de variables en una base de datos con ID duplicados

Hola, Otra alternativa es la siguiente usando data.table. En el ejemplo genero/incluyo un pequeño dataset para reproducir el caso... #-- library(data.table) set.seed(10) DT <- data.table( Id= sample(1:10, 100, replace = TRUE), Nro_visita= sample(1:10, 100,

[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

[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, >

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]

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-es] HELP!! Expansión de variables en una base de datos con ID duplicados

Hola, ¿qué tal? En seudocódigo: - Aplicas rank sobre -NRO_VISITA por ID (usando group_by + mutate). - Te quedas con el rank == 1. Un saludo, Carlos J. Gil Bellosta http://www El dom, 28 feb 2021 a las 15:38, kendy Boisrond () escribió: > Hola Comunidad, > > Por favor necesito su ayuda:

[R-es] HELP!! Expansión de variables en una base de datos con ID duplicados

Hola Comunidad, Por favor necesito su ayuda: Se trata de una base, donde cada "ID" representa una vivienda única, pero por lo que puede haber más visitas en una misma vivienda, los "ID" están duplicados. La base visitas es de dimensión: 98692 x 52 (ID duplicados) y la base vivienda tendría una

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

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