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Peter Baumgartner
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Jan 25, 2025
r.geocompx.orgShow 30 more annotations
Geographic Information Science (GIScience); Geomatics; Geoinformatics; Spatial Information Science; Geoinformation Engineering (Longley 2015); and Spatial Data Science (SDS)
to use geographic data for applied scientific work
we do not seek to imply that there is any cohesive academic field called ‘Geocomputation’
Jul 30, 2022
Remove Ads
Aug 11, 2018
www.zotero.org
everything except attachment files
Data syncing is free and unlimited, and it can be used without file syncing.
Jul 17, 2024
quarto.org
To create a new blog project within RStudio, use the New Project command and select Quarto Blog:
Jun 13, 2024
www.sports-insider.deShow 1 more annotation
Ohne eine konsequente Ernährungsumstellung werden dir 10.000 Schritte pro Tag allein nicht helfen. Denn für 10.000 Schritte verbrennt man bei lockerem Tempo nur etwa 350 (Kcal) Kalorien, was gerade weniger ist als eine Bratwurst oder ein Brötchen mit Salami an Kalorien bereitstellt.
Bei einer durchschnittlichen Schrittgeschwindigkeit und Schrittlänge lässt sich mit 10.000 Schritten eine Strecke von ungefähr 7 bis 8 Kilometern bewältigen.
Achte generell darauf, mindestens einmal pro Stunde von deinem Büroarbeitsplatz aufzustehen und dich ein wenig zu bewegen.
Jun 1, 2024
forum.posit.co
. represents the object on the LHS of the pipe which could be anything (not necessarily a data frame). The .data pronoun is specific to data masking functions which are designed for working with data frames.May 30, 2024
www.statistics4u.info
Betrachtet man die Distanz in mehrdimensionalen Räumen, so stellt man fest, dass die "klassische" euklidische Distanz irreführend sein kann
Betrachtet man die Schnitte durch die Verteilung entlang der Geraden P1M und P2M so sieht man ganz deutlich, dass der Punkt P1 wesentlich weiter außen liegt (bezogen auf die Wahrscheinlichkeitsverteilung) als der Punkt P2.
Man könnte dies auch so interpretieren, dass durch korrelierte Daten der Raum in einer gewissen Weise verzerrt wird, so dass die euklischen Abstände von der Raumrichtung abhängen. Mathematisch formuliert, misst die Mahalanobis-Distanz den Abstand zweier Punkte unter Berücksichtigung der Varianzen und Kovarianzen der beteiligten Variablen.
Apr 23, 2024
ggobi.github.ioShow 1 more annotation
reduce the columns being displayed
Aesthetics can be applied to every subplot with the
mapping parameter.There are three major sections of the pairwise matrix:
lower, upper, and diag. The
lower and upper may contain three plot types:
continuous, combo, and discrete.
The ‘diag’ only contains either continuous or
discrete.Apr 19, 2024
stats.stackexchange.com
Very loosely, it's essentially a value below which you can be quite confident the value will be pretty numerically meaningless - in that any smaller value isn't likely to be an accurate calculation of the value we were attempting to compute.
But statistical meaning will have been lost far earlier. Note that p-values depend on assumptions, and the further out into the extreme tail you go the more heavily the true p-value (rather than the nominal value we calculate) will be affected by the mistaken assumptions, in some cases even when they're only a little bit wrong.
Do not use any value smaller than p < 0.001
Apr 17, 2024
library.virginia.edu
Consequently, some analysts opt to standardize DFBETA values—in which case they’re referred to as DFBETAS—by dividing each DFBETA by the standard error estimate for .
Apr 17, 2024
sscc.wisc.edu
Ramsey Regression Equation Specification Error Test (RESET) to detect specification errors in the model
Apr 17, 2024
www.discoverdatascience.org
data science is merely a rebranding of statistics
Data Science as an applied branch of statistics
Oct 23, 2021
imagecompressor.com
This online image optimizer uses a smart combination of the best optimization and lossy compression algorithms to shrink JPEG, GIF and PNG images to the minimum possible size while keeping the required level of quality.
Upload up to 20 images. Wait for the compression to finish. Click thumbnails in the queue for quality setting. Use the slider to control the compression level and mouse/gestures to compare images.
Apr 10, 2024
Apr 9, 2024
statisticseasily.com
Spearman’s rho is renowned for its simplicity and efficacy in small samples with weak correlations.
Kendall’s Tau-b is celebrated for its robustness, particularly in the presence of outliers or non-normal distributions.
guided by theoretical considerations and empirical evidence from extensive comparative studies such as Xu et al. (2013)
Mar 30, 2024
statisticsglobe.com
options(dplyr.summarise.inform = FALSE)
Mar 15, 2024
statisticsbyjim.comShow 3 more annotations
An odds ratio (OR) calculates the relationship between a variable and the likelihood of an event occurring.
Odds definition: The probability of the event occurring divided by the probability of the event not occurring.
As you can see, the odds of an event occurring is a ratio itself. Therefore, an OR is a ratio of two ratios.
Mar 10, 2024
bookdown.orgShow 2 more annotations
Whether using table() or xtab(), a simple way to add all margin totals to your table is with the function addmargins() from the stats package. Simply add your table or xtab object as the first argument to the addmargins() function, and a new table will be returned which includes these margin totals. This also works with tables of proportions.
By default, missing values are excluded from the counts; if you want a count for these missing values you must specify the argument useNA=“ifany” or useNA=“always”. The below examples show how to use this function.
prop.table(), which unlike table() takes in a table object as an argument and not the actual variables of interest.
Feb 24, 2024
usafacts.org
Although a few data points are consistently collected, there is a clear lack of data on firearms in the US. It is impossible, for instance, to know the total number of firearms owned in the United States, or how many guns were bought in the past year, or what the most commonly owned firearms are. Instead, Americans are left to draw limited conclusions from available data, such as the number of firearms processed by the National Firearm Administration (NFA), the number of background checks conducted for firearm purchase, and the number of firearms manufactured. However, none of these metrics provide a complete picture because state laws about background checks and gun registration differ widely.
Feb 22, 2024
www.thetrace.org
Show 2 more annotations
There is currently no requirement that federally licensed dealers report sales volume to the Bureau of Alcohol, Tobacco, Firearms and Explosives, so we don’t have complete data on individual purchases. But we do know how many guns are shipped to dealers from licensed manufacturers every year, because gunmakers are required to report those figures to the ATF. The agency releases gun production numbers, along with import and export figures, in its Annual Firearms Manufacturing and Exportation Report. “Production” is defined by the ATF as “firearms … manufactured and disposed of in commerce” — or sold — “during the calendar year.”
supplemented import totals with U.S. International Trade Commission import reports.
We found that more than 494 million firearms have been produced for the U.S. market since 1899, and the pace of that production has been increasing.
Feb 20, 2024
ggplot2.tidyverse.org
Define a collection of palettes to alter the default based on number of levels to encode
discrete_palettes
Feb 16, 2024
www.colorwiki.com
dE2000 has become the industry standard formula to use. dE2000 is recommended for all calculations except textiles which still use dE-CMC.
Feb 9, 2024
en.wikipedia.org
columns are of variable thickness, because column width indicates the relative proportion of the corresponding value on the population
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