search for: paulbernal07

Basic algebra and exponentials/logs. I leave those details to you or another HelpeR. -- Bert On Sun, Aug 20, 2023 at 12:17?PM Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear Bert, > > Thank you for your extremely valuable feedback. Now, I just want to > understand why the signs for those starting values, given the following: > > #Fiting intermediate model to get starting values > > intermediatemod <- lm(log(y -...

...t; Oh, sorry; I changed signs in the model, fitting > theta0 + theta1*exp(theta2*x) > > So for theta0 - theta1*exp(-theta2*x) use theta1= -.exp(-1.8) and theta2 = > +.055 as starting values. > > -- Bert > > > > > > On Sun, Aug 20, 2023 at 11:50?AM Paul Bernal <paulbernal07 at gmail.com> > wrote: > >> Dear Bert, >> >> Thank you so much for your kind and valuable feedback. I tried finding >> the starting values using the approach you mentioned, then did the >> following to fit the nonlinear regression model: >> nlregmod2 &lt...

...ge, and it is also quite possible that the package author is not a Windows person. At the very least, you'll need some familiarity with the Windows toolchain and be prepared to apply a fair amount of elbow grease. -pd (crosspost to r-help removed) On 29 Dec 2016, at 22:04 , Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear Jeff, > > Thank you for your fast and kind reply. When you say that you do not think > this can be done on windows, then I would have to use something like Ubuntu > or Linux? > > Best regards > > Paul > > 2016-12-29 16:00 GMT-05:0...

Oh, sorry; I changed signs in the model, fitting theta0 + theta1*exp(theta2*x) So for theta0 - theta1*exp(-theta2*x) use theta1= -.exp(-1.8) and theta2 = +.055 as starting values. -- Bert On Sun, Aug 20, 2023 at 11:50?AM Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear Bert, > > Thank you so much for your kind and valuable feedback. I tried finding the > starting values using the approach you mentioned, then did the following to > fit the nonlinear regression model: > nlregmod2 <- nls(y ~ theta1 - theta2*exp(-t...

...37) ~ x to get intercept = -1.8 and slope = -.055. So I used .37, > exp(-1.8) and -.055 as the starting values for theta0, theta1, and theta2 > in the nonlinear model. This converged without problems. > > Cheers, > Bert > > > On Sun, Aug 20, 2023 at 10:15?AM Paul Bernal <paulbernal07 at gmail.com> > wrote: > >> Dear friends, >> >> This is the dataset I am currently working with: >> >dput(mod14data2_random) >> structure(list(index = c(14L, 27L, 37L, 33L, 34L, 16L, 7L, 1L, >> 39L, 36L, 40L, 19L, 28L, 38L, 32L), y = c(0.44, 0.4, 0.4,...

...he package author is not a Windows person. > > At the very least, you'll need some familiarity with the Windows toolchain > and be prepared to apply a fair amount of elbow grease. > > -pd > > (crosspost to r-help removed) > > On 29 Dec 2016, at 22:04 , Paul Bernal <paulbernal07 at gmail.com> wrote: > > > Dear Jeff, > > > > Thank you for your fast and kind reply. When you say that you do not > think > > this can be done on windows, then I would have to use something like > Ubuntu > > or Linux? > > > > Best regards >...

Hello everyone, I was reading a table into R, and when trying to retrieve it the following message appeared: [ reached getOption("max.print") -- omitted 469376 rows ] Does this mean that R left out 469376 rows? Or R is taking those 469376 rows as well and the limitation is only for printing purposes? Thanks in advance for any help, Best regards, Paul [[alternative HTML version

...1 month",length=13) ) # do the merge adding the "missing" rows (where NA will appear) dfNew <- merge(dfDates, dfOrig, by="TransitDate", all.x=TRUE ) # replace the NA's by zero dfNew[is.na(dfNew)] <- 0 HTH, Eric On Wed, Nov 1, 2017 at 9:45 PM, Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear R friends, > > I am currently working with time series data, and I have a table(as data > frame) that has looks like this (TransitDate are in format = "%e-%B-%Y") : > > TransitDate Transits CargoTons > 1985-04-01 100...

...o give you a definitive answer. Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Tue, Sep 12, 2017 at 8:17 AM, Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear all, > > Hope you are doing great. I am currently using R version 3.4.1 ("Single > Candle") and was trying to install packages RODBC and RODBCext using the > following steps: > > > install.packages("RODBCext") > Installi...

Dear R friends, I am currently working with time series data, and I have a table(as data frame) that has looks like this (TransitDate are in format = "%e-%B-%Y") : TransitDate Transits CargoTons 1985-04-01 100 2500 1985-05-01 135 4500 1985-06-01 120 1750 1985-07-01 100 3750 1985-08-01 200

....38, I fit the linear model log(y - .37) ~ x to get intercept = -1.8 and slope = -.055. So I used .37, exp(-1.8) and -.055 as the starting values for theta0, theta1, and theta2 in the nonlinear model. This converged without problems. Cheers, Bert On Sun, Aug 20, 2023 at 10:15?AM Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear friends, > > This is the dataset I am currently working with: > >dput(mod14data2_random) > structure(list(index = c(14L, 27L, 37L, 33L, 34L, 16L, 7L, 1L, > 39L, 36L, 40L, 19L, 28L, 38L, 32L), y = c(0.44, 0.4, 0.4, 0.4, > 0.4, 0.43, 0.46, 0.49,...

...have dates; you have just months and years 3. therefore perhaps the as.yearmon() function in the zoo package could help library(zoo) my.factor <- factor("Feb 2017") as.yearmon(my.factor) ## gets around the factor-vs-character issue On Mon, Jun 19, 2017 at 3:07 PM, Paul Bernal <paulbernal07 at gmail.com> wrote: > Dear all, > > Hope you are doing great. I have a .csv file that I read into R, the .csv > file consistss of two fields (TransitDate and CargoTons). > > The TransitDate I formatted from Excel in the fashion mmm-yy (e.g.: > Apr-2013). However R does not...

Dear all, Hope you are doing great. I am currently using R version 3.4.1 ("Single Candle") and was trying to install packages RODBC and RODBCext using the following steps: > install.packages("RODBCext") Installing package into ?C:/Users/PaulBernal/Documents/R/win-library/3.4? (as ?lib? is unspecified) also installing the dependency ?RODBC? trying URL '

...stiging in Brussel naar het Herman Teirlinckgebouw op de site Thurn & Taxis. Vanaf dan ben je welkom op het nieuwe adres: Havenlaan 88 bus 73, 1000 Brussel. /////////////////////////////////////////////////////////////////////////////////////////// 2017-09-21 15:08 GMT+02:00 Paul Bernal <paulbernal07 at gmail.com>: > Dear Leslie and Thierry, > > Thank you so much for your kind and extremely valuable replies. Only one > doubt remains, which path do you think is the best option to store > downloaded packages? Should I set it up so that all installed packages are > in the same...

...b >> "numeric" "integer" >> >> So either I'm missing something or you are. Happy to be corrected and >> chastised if the former. >> >> Cheers, >> Bert >> >> >> On Tue, Jan 30, 2024 at 10:41?AM Paul Bernal <paulbernal07 at gmail.com> >> wrote: >> >>> Dear friend Duncan, >>> >>> Thank you so much for your kind reply. Yes, that is exactly what is >>> happening, there are a lot of NA values at the start, so R assumes that >>> the >>> field is of typ...

...ckgebouw op de site Thurn & Taxis. > Vanaf dan ben je welkom op het nieuwe adres: Havenlaan 88 bus 73, 1000 > Brussel. > > //////////////////////////////////////////////////////////// > /////////////////////////////// > > > > 2017-09-20 16:16 GMT+02:00 Paul Bernal <paulbernal07 at gmail.com>: > > Dear R friends, > > > > I am currently using Windows 8, 64-bit operating system, x64-based > > processor. I have installed R version 3.4.1 "Single Candle". > > > > Also, I have several packages installed in this path: > > &gt...

...ps://maps.google.com/?q=Havenlaan+88&entry=gmail&source=g> bus 73, >> 1000 Brussel. >> >> //////////////////////////////////////////////////////////// >> /////////////////////////////// >> >> >> >> 2017-09-20 16:16 GMT+02:00 Paul Bernal <paulbernal07 at gmail.com>: >> > Dear R friends, >> > >> > I am currently using Windows 8, 64-bit operating system, x64-based >> > processor. I have installed R version 3.4.1 "Single Candle". >> > >> > Also, I have several packages installed in...

Dear all, Hope you are doing great. I have a .csv file that I read into R, the .csv file consistss of two fields (TransitDate and CargoTons). The TransitDate I formatted from Excel in the fashion mmm-yy (e.g.: Apr-2013). However R does not recognize the field TransitDate as a date field. Here is the code: library(lubridate) Dataset <- read.table("U:/NEWCargoData.csv",

...ing the "missing" rows (where NA will appear) > dfNew <- merge(dfDates, dfOrig, by="TransitDate", all.x=TRUE ) > > # replace the NA's by zero > dfNew[is.na(dfNew)] <- 0 > > HTH, > Eric > > > On Wed, Nov 1, 2017 at 9:45 PM, Paul Bernal <paulbernal07 at gmail.com> > wrote: > >> Dear R friends, >> >> I am currently working with time series data, and I have a table(as data >> frame) that has looks like this (TransitDate are in format = "%e-%B-%Y") : >> >> TransitDate Transits Cargo...

Dear friends, I am currently using R version 3.4.2 (64-bit for Windows) and when trying to download package rggobi an error pops up with the following message: "The program can?t start because libxml2-2.dll is missing from your computer. Try reinstalling the program to fix this problem" Is this suggesting me to reinstall R or is there a way to get the libxml2-2.dll somewhere to solve