Tag: across

How to use dplyr's coalesce function with group_by() to create one row per person with all values filled in?

Advertisements I am trying to use coalesce() to produce one row per participant that has their name and their score. Participants had 3 opportunities to fill in their data, and most only came in once (and those that came in multiple times always put in the same data). So my data looks like: library(dplyr) test_dataset… Read More How to use dplyr's coalesce function with group_by() to create one row per person with all values filled in?

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Make columns within a list in HTML/CSS

Advertisements I have an unordered list in which I am displaying some objects. These objects have multiple attributes which I want to display. I made this in Python Flask and jinja. <li class="list-group-item"> <a href="link">{{candidate.name}}</a> <label id="min">Min. value:<input type="number" id="min" name="min-val" min="1" max="100"></label> <label id="max">Max. value:<input type="number" id="max" name="max-val" min="1" max="100"></label> <p id="average_rank">{{‘%0.2f’ % average_rank|float}}</p>… Read More Make columns within a list in HTML/CSS

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How to use dplyr to return the grouped sum of all numeric columns when there are NA values?

Advertisements I’m was attempting to sum all numeric columns using dplyr’s group_by and summarise functions as below. I didn’t understand the error returned from the summarise function and cannot seem to find a similar example on stack overflow … however after two members pointed out my error in making the example data I found that… Read More How to use dplyr to return the grouped sum of all numeric columns when there are NA values?

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C++ higher order functions: different results when declaring multiple functions

Advertisements I was plying with higher order functions, and I started getting different results when I created two instances and assigning them to variables. I reduced the issue to the following example: #include <iostream> using ColorGetter = int(*)(void); auto paint(const ColorGetter &f) { return [&]() { return f(); }; } int colorA() { return 10;… Read More C++ higher order functions: different results when declaring multiple functions

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Web-Scraping using R (I want to extract some table like data from a website)

Advertisements I’m having some problems scraping data from a website. I do have not a lot of experience with web-scraping. My intended plan is to scrape some data using R from the following website: https://www.myfxbook.com/forex-broker-swaps More precisely, I want to extract the Forex Brokers Swap Comparison for all the available pairs. My idea so far:… Read More Web-Scraping using R (I want to extract some table like data from a website)

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