While there are quite some SO examples out there how to manage the login, here are the ncessary steps whenever you need to login in manually and have to start with a browser cookie. First install the “EditThisCookie” plugin in Chrome and export the cookie How to scrape a website with R and browser generated cookie weiterlesen
Archiv der Kategorie: Software
Better than a streamdeck: the Mac touchbar
I have been thinking to buy an Elgato Streamdeck as we have to lecture now also online during winter 2020.
While the Streamdeck mini would be a nice addition to the Elgato 4 K Camlink (that connects the Nikon) as well as the Epoc Cam software (that connects the Iphone) for easy switching input channels, I ultimately decided against this solution and just reconfigured the Touchbar for OBS using Better Touch Tool.
Live video projection over 30 meter
Here is a working hardware combination after several failed attempts – jerky moves, black screen, lost signal, color shifts.
Nikon Z6 – switch video toggle @back of camera for clean HDMI output, set video menu to 60 frames (to avoid display lag), setting c3 standby on. 1800€ incl FTZ.
Sirui VH-10X Fluid, 100€ used.
subtel external power supply for Z6 (only this one allows closing of battery compartment). 56€.
Rode VideoMicro Compact. 88€.
Elgato Cam Link 4K with short USB C connector (to avoid shear stress). 122€.
Macbook Pro with USB-C Digital-AV-Multiport-Adapter (other display port and hdmi did not show up as external display in OBS). adapter 72€.
PW-HT225PIR HDMI Extender with power adapter (USB power alone not sufficient, HDMI amplifier failes consistently). 30€.
30m Cat6 cable. 30€.
Short throw Optoma UHD42 4K Beamer – UHD. 1200€
Science integrity consultants
Inclusion on the list does not mean to endorse or promote any company or individual
Resis (Enrico Bucci, but watch current Lancet controversy)
Science Integrity Digest (Elisabeth Bik, the most famous image spotter)
Image integrity (Jana Christopher, long-term expert)
Image Data Integrity (Mike Rossner, long-term expert as well)
plus many more individuals highlighted at retractionwatch.org
Laborjournal einzelne Artikel archivieren
Ist ganz einfach. Neuestes Heft herunterladen und splitten
# brew install ghostscript gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=6 -dLastPage=9 -sOUTPUTFILE=Krull.pdf LJ_20_07.pdf gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=14 -dLastPage=17 -sOUTPUTFILE=Antes.pdf LJ_20_07.pdf gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=26 -dLastPage=29 -sOUTPUTFILE=Jaeger.pdf LJ_20_07.pdf gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=34 -dLastPage=37 -sOUTPUTFILE=Jeschke.pdf LJ_20_07.pdf
Edit R plots in Keynote
Did not know but there is a library that is able to export directly to .pptx which can be imported into Keynote and edited after ungrouping.
Unter MacOS Keynote streamen mit Video
- OBS installieren mit Virtual Camera Plugin
- Powerpoint/Keynote als HTML exportieren und in lokalem Browser aufrufen
- OBS Template erstellen mit Text, Kamerainput und Browserwindow
- Virtual Camera in OBS starten
- In zweitem Browserwindow Konferenz starten und Einstellungen > Sicherheitscheck > Website > Einstellungen > Konferenz > Virtual Camera auswählen
Neu:
- OBS installieren
- Keynote in Fenster wiedergeben
- OBS Template erstellen mit Text, Kamerainput und Fensterinput
Graphical display of outbreaks: Transmission trees
Let’s start with some examples from the literature, find out necessary elements, compare different versions and develop a R template for general use.
“Exploding Stars”
“Tetris”
“Clean Undeterministic”
“Clean Tree”
“Tree Addons”
“Railways”
“Simple ”
“Vertical”
“star bus”
“Mathematical”
“Genetics”
From R to Python
It’s bit confusing if you are having long-term experience with R but need some OpenCV Python code. What worked for me
- download and install Python 3.8.3.
pip install opencv-python- pip install opencv-contrib-python
although Spyder or Jupyter is recommended for data science, I went for PyCharm- install Atom and follow the video instructions
- take care, numerous non working introductions out there, stick to recent version
R leaflet – keep map in frame after closing info box
Although having some experience with leaflet before, it took me 5 hours to find out how to
(1) change the background color and
(2) re-center my map after the popup was panning the map basically out view. Here is my solution
leaflet(options = leafletOptions(
zoomControl = FALSE,
minZoom=6, maxZoom=6,
centerFixed = TRUE) ) %>%
addPolygons(data = ds,
fillColor = ~pal(AnzahlFall),
color="black", weight = 1,
fillOpacity = 0.7,
label = ~name_2,
popup = ~www,
popupOptions = popupOptions( autopan=FALSE, keepInView = TRUE ) ) %>%
htmlwidgets::onRender("
function(el, x) {
var myMap = this;
myMap.dragging.disable();
myMap.on('popupclose', function(e) { myMap.panTo( {lon: 10.26, lat: 51.1} ) });
var e = document.getElementsByClassName('leaflet-container');
e[0].style.backgroundColor = 'white';
}")
python3 cv2 installation
Homebrew is struggling with the older python 2.7 version that is missing ssl support. Python 3.8 did not recognize cv2 but this finally worked
brew install python3 brew postinstall python3 pip3 install virtualenv virtualenvwrapper virtualenv env_name --python="python3" /Users/wjst/env_name/bin/pip3 install opencv-python /Users/wjst/env_name/bin/pip3 install pandas scipy matplotlib Pillow tqdm sklearn imageio /Users/wjst/env_name/bin/python3 -c "import cv2"
then I could finally run the image forgery detection from Github.
cd /Users/wjst/Desktop/image-copy-move-detection-master /Users/wjst/env_name/bin/python3 > from copy_move_detection import detect > ...
Good Coding Practices (in R)
https://swcarpentry.github.io/r-novice-inflammation/06-best-practices-R/
https://www.r-bloggers.com/r-code-best-practices/
https://en.wikipedia.org/wiki/Best_coding_practices
https://www.topcoder.com/coding-best-practices/
https://hackernoon.com/few-simple-rules-for-good-coding-my-15-years-experience-96cb29d4acd9
Was ist eigentlich Meinung, was ist Tatsachenbehauptung?
Volker Kitz erklärt den Unterschied
Was ist eine Meinung? Eine Meinung gibt ein persönliches Werturteil wieder. Das wesentliche Merkmal der Meinung ist: Sie kann nicht “richtig” oder “falsch” sein, man kann sie nicht überprüfen. Das unterscheidet die Meinung von der Tatsachenbehauptung. Sage ich: “Mein Nachbar prügelt seinen Hund”, lässt sich diese Äußerung überprüfen, ist also eine Tatsachenbehauptung. Sage ich hingegen: “Der Lebenswandel meines Nachbarn ist inakzeptabel”, lässt sich das nicht überprüfen. Andere können das anders sehen. Es ist eine Meinungsäußerung.
Das ganze ist deshalb so schwierig weil zuweilen Meinung und Tatsachenäußerung direkt in einander übergehen. Über eine Tatsachenbehauptung lässt sich manchmal sehr einfach auch eine Meinung transportieren. Tucholskis “Soldaten sind Mörder” beinhaltet die Tatsache, dass Soldaten unter bestimmten Voraussetzungen andere Menschen töten (die Aussage ist also durch Art. 5 Abs. 1 GG gedeckt …).
Allerding muss die Tatsache an sich stimmen. Mit unwahren Aussagen kann man sich nicht auf Meinungsfreiheit berufen.
Geschützt: Image, text and data forensics
Link out symbol
I have been looking for a wikipedia-style link out symbol (wikipedia uses a svg symbol). Some websites recommend font awesome symbol /f08e others are in favor of the north east arrow #x2197; while I modfied now a code pen by thiago for the css of this wordpress child theme
a:not([href*='wjst.de'])::after {
content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAQElEQVR42qXKwQkAIAxDUUdxtO6/RBQkQZvSi8I/pL4BoGw/XPkh4XigPmsUgh0626AjRsgxHTkUThsG2T/sIlzdTsp52kSS1wAAAABJRU5ErkJggg==);
margin: 0 3px 0 5px;
}