Xavablog – Comments

Re: pROC 1.18.0

2025-08-11T11:35:48+02:00

This has been filled as an issue on the bug tracker.

Re: pROC 1.18.0

2022-11-23T16:53:45+01:00

Dear Xavier Robin,

I would like to use pRoc for data analysis of data of my PhD project. I would greatly appreciate your help:
I need to calculate one-sided AUC CIs. Unfortunately, I could not find a command in pRoc to do so.
Is there a possibility in pROC?
If not, do you know any other packages/comment in R which makes that possible?

Thank you in advance for your answer!

Kind regards,
Rebekka

Re: pROC 1.17.0.1

2021-12-27T10:48:13+01:00

An answer was given on the GitHub issue tracker (#99).

Re: pROC 1.17.0.1

2021-07-23T13:04:16+02:00

Hi! I have installed the pROC package a month ago with the following code without problems:
#load and call the necessary package.
install.packages ("pROC")
library ("pROC")

#import the excel.
library (readxl)
dfcor <- read_excel ("C: /Users/pe3re/Downloads/Curvas-COR-master/Curvas-COR-master/FCM.xlsx", col_types = c ("numeric", "numeric"))

roc <-roc (dfcor $ true, dfcor $ pred)

plot (roc)

auc (roc)

#we draw the curve beautiful.
#insert AUC and IC
rocobj <- plot.roc (dfcor $ true, dfcor $ pred, main = "Confidence intervals", percent = TRUE, ci = TRUE, print.auc = TRUE)

#we create object to plot the default CI at 95% CI. Boots Default: 2000.
ciobj <- ci.se (rocobj, specificities = seq (0, 100, 5))
#insert the IC
plot (ciobj, type = "shape", col = "# 1c61b6AA") # plot as a blue shape

Today I have updated to the new version and it has given me problems. I have followed the code on the page and I get the same error again when using the confidence intervals:

roc1 <- roc (true ~ pred, dfcor, percent = TRUE,
ci = TRUE, boot.n = 100, ci.alpha = 0.9, stratified = FALSE,
plot = TRUE, auc.polygon = TRUE, max.auc.polygon = TRUE, grid = TRUE,
print.auc = TRUE, show.thres = TRUE)

Error in delongPlacementsCpp (roc):
package 'Rcpp_precious_remove' does not offer function 'Rcpp'

Re: Transcend class 10 vs. SanDisk Extreme Pro: a real-case scenario

2013-05-23T09:16:27+02:00

Hi Michael, no I didn't perform video tests. It probably depends a lot on the camera you're using. You might want to look for UHS cards (that operate at higher clock speed) if your camera supports it (most recent cameras do).

Re: Transcend class 10 vs. SanDisk Extreme Pro: a real-case scenario

2013-05-22T20:26:38+02:00

Did you do a video test? I have two Transcend 32GB Class 10 cards and I find that I get file corruption if I record 1080p with them. Given your results, I wonder if a smaller size might work better.

Re: Installation of Ubuntu Linux (12.04 Precise Pangolin) on a Dell Latitude E6530

2012-12-14T11:46:01+01:00

An easier way to get the touchpad working is this :

1. Download
http://www.dahetral.com/public-download/psmouse-alps-dst-1.1.tbz/view

2. Unpack in /

3. Execute ./alps.sh dkms_build_alp in /usr/src/psmouse-alps-dst-1.1

This will install a dkms controlled module.

Re: Installation of Ubuntu Linux (12.04 Precise Pangolin) on a Dell Latitude E6530

2012-12-01T16:03:54+01:00

I will venture to give you a tentative answer (not backed-up with any data). The i7-3720QM dissipates 45W at full charge (according to Intel). The i5s (and 2 cores i7-3520M) available on the E6530 all dissipate 35W only. This could make a small difference on the heat and noise.

Notable also is the nvidia graphic card. I couldn't find exact figures, but it probably takes (and dissipates) 15-20W. If you're concerned by the heat and noise this is something to take into account too.

I should finally note that I recently upgraded to Ubuntu 10.10 with kernel 3.5, and the laptop runs noticeably cooler on light usage/idle.

Re: Installation of Ubuntu Linux (12.04 Precise Pangolin) on a Dell Latitude E6530

2012-12-01T15:19:15+01:00

Hi hokkenek, i am interesting to buy this Dell laptop, i5 dual core processor like yours, i have one question, do you have the same problems whith noise and fan like quad core version?

Re: Installation of Ubuntu Linux (12.04 Precise Pangolin) on a Dell Latitude E6530

2012-12-01T14:53:49+01:00

Hi Stefaan,

If Optimus is enabled, open the monitor preferences (type it in the dash) and select your screen options there (works only with VGA).

If you disabled Optimus and installed Nvidia non-free drivers, install nvidia-settings and configure your monitors from there (AFAIK it is the only way to get HDMI work).

I still haven't tested docking stations unfortunately. Reading from the internet, it appears USB docking stations usually don't work very well with Linux. Dell's E-Port should be easier to setup.