A simplified ('80 Salamander Books) take on how aircraft trick radar homing missiles using rapid-bloom chaff. The missile homes on the centroid of the biggest & brightest radar reflection. A sudden chaff cloud can make a missile break lock & home on what "looks" like a better target. [1000x1200]
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πŸ‘€︎ u/rhussain81
πŸ“…︎ Jan 01 2022
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[OC] A flag-colored Delaunay triangulation of continental US county centroids
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πŸ‘€︎ u/futilon
πŸ“…︎ Dec 15 2021
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[Geometry] I spent over two hours creating a graph of general solutions to the four centers (centroid, circumcenter, orthocenter, incenter) of a triangle. The equations desperately lack sanitation, vertical lines cause missing solutions, and this was all done with tools from Algebra 2 and below. desmos.com/calculator/wxc…
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πŸ‘€︎ u/r77xxl
πŸ“…︎ Jan 13 2022
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Error in rasterFromXYZ(xyz = centroids[, c("lon", "lat", "id")], crs = WGS84) : y cell sizes are not regular

I'm trying to convert a csv file set of values into a raster but keep receiving the above error.

#Set raster options to improve speed of calculation
rasterOptions(tmptime = 4,
              progress = "text", #displays raster operation progress bar
              timer = TRUE, #outputs raster calculation duration 
              maxmemory = 10e+9, #max no. of bytes to read into memory
              chunksize = 5e+9, #max no. of bytes to read/write in a single chunk while processing disk-based raster objects
              tmpdir = tmp_path) #location for writing temporary file

#Define CRS
WGS84 <- "+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0"

#select csv file containing RR predicted poverty
pov_csv_path <- "" #paste CSV Flile

#set csv path's parent directory as working directory 
setwd(dirname(dirname(pov_csv_path)))

#load csv to dataframe
df_pov<- read.csv(pov_csv_path)

#Subset the predicted poverty dataframe to get the grid ID & lat and lon
centroids <- df_pov %>%
  select(id,lon,lat)

#Make a raster from centroids
#Function generates raster from regular grids like dataset used - assumes minimum distance between x & y coordinates is raster resolution
centroid_rast <- rasterFromXYZ(xyz = centroids[,c("lon","lat","id")], crs=WGS84)
``

Link to CSV file used: https://drive.google.com/file/d/1uUyNdhWQXLwGYHrfU3jKMRi5XkYrj6K2/view?usp=sharing

Error Message: Error in rasterFromXYZ(xyz = centroids[, c("lon", "lat", "id")], crs = WGS84) : 
  y cell sizes are not regular
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πŸ‘€︎ u/synbiosimp
πŸ“…︎ Jan 15 2022
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ASMR Math - Whispers & Chalkboard Sounds - Centroid of a Triangle youtu.be/AmSApRDfV3k
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πŸ‘€︎ u/educationalasmr
πŸ“…︎ Jan 14 2022
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Centroids πŸ¦‚
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πŸ‘€︎ u/ADistantImage
πŸ“…︎ Dec 07 2021
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A flag-colored Delaunay triangulation of continental US county centroids
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πŸ‘€︎ u/benthib
πŸ“…︎ Dec 15 2021
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[D] K-means producing very different centroids, even after initialization with canopies

Doing some Big Data coursework for my DS Masters and I am pretty confused by what I'm seeing. I'm running k-means clustering on Mahout and understand you can generally get different final centroids in k-means because it initializes them randomly... But I've initialized clusters using canopy clustering and even after that am seeing wide variance in the final density values. Here's one example:

Run Inter-cluster density Intra-cluster density
1 0.430836339 0.590516787
2 0.618821774170647 0.581433137
3 0.4960634 0.567159394

I've run this for different k values, distance metrics and max iteration values. The behavior is similar.

This is problematic because the purpose of this project is to compare performance across different parameter values. With such divergent results within the same parameter set, I'm forced to run each set of parameters multiple times and take an average, which is drastically increasing processing time and computation cost.

Is this expected behavior? Did I misunderstand something?

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πŸ‘€︎ u/lumicanis
πŸ“…︎ Dec 03 2021
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[Intentional] ASMR Math - Whispers & Chalkboard Sounds - Centroid of a Triangle youtu.be/AmSApRDfV3k
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πŸ‘€︎ u/educationalasmr
πŸ“…︎ Jan 14 2022
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[Intentional] ASMR Math - Whispers & Chalkboard Sounds - Centroid of a Triangle youtu.be/AmSApRDfV3k
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πŸ‘€︎ u/educationalasmr
πŸ“…︎ Jan 14 2022
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Centroid of a Triangle - ASMR - Whispers & Chalkboard Sounds youtu.be/AmSApRDfV3k
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πŸ‘€︎ u/educationalasmr
πŸ“…︎ Jan 14 2022
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[Intentional] ASMR Math - Whispers & Chalkboard Sounds - Centroid of a Triangle youtu.be/AmSApRDfV3k
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πŸ‘€︎ u/educationalasmr
πŸ“…︎ Jan 14 2022
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Why are these 2 formulas for the y bar of the parabolic centroid different?

Im trying to get the centroid of the parabola with the vertex, but I do not know which of these formulas to follow.

https://preview.redd.it/04eara4o5i381.jpg?width=416&format=pjpg&auto=webp&s=b405b490a2d2343410f959e9647303d878116a90

https://preview.redd.it/mcgh3c4o5i381.jpg?width=786&format=pjpg&auto=webp&s=75b8ca189ce6d562eb0f9db013ecb38d93aadf04

https://preview.redd.it/02gf2g4o5i381.jpg?width=894&format=pjpg&auto=webp&s=b4f3cd7c87f9f0cba4f9ce658ced64074c8e3471

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πŸ‘€︎ u/ripersnifle23
πŸ“…︎ Dec 04 2021
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Centroid Acorn on a plasma table

Not finding a lot of information on a Centroid Acorn being used to control a plasma table but that is the path I would like to go down for my build. Any recommendations for a good thc that plays well with the acorn? Any other pitfalls to watch out for when using an acorn on a plasma table?

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πŸ‘€︎ u/_CapnObvious_
πŸ“…︎ Nov 18 2021
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[STATIC ENGINEERING] Need help with these problems ASAP. They’re about finding Moment of Inertia and Centroids. reddit.com/gallery/ran45z
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πŸ‘€︎ u/Meme_Watcher2
πŸ“…︎ Dec 07 2021
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[ENG121] Hey guys, I am having trouble understanding the calculations for finding the centroids of the object groups. I understand that I need the centroid distance to the weight force from the objects but I dont understand how to get the centroid distance. Thanks for any help :)
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πŸ‘€︎ u/bricktamla
πŸ“…︎ Nov 01 2021
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The logo for the Iranian Geometry Olympiad beautifully shows how the Incenter, Circumcenter, and Centroid of a triangle lie on a single line (they are conventionally denoted by the letters I,G and O).
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πŸ“…︎ Jul 12 2021
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Measuring distance between cell centroid and boundary face centroid in STAR-CCM+

Hello everyone,

is there a possibility to measure the distance between the cell centroid and boundary face centroid d_1 and d_2 of specific cells in STAR-CCM+?

https://preview.redd.it/l8jmg8gm88u71.png?width=391&format=png&auto=webp&s=c54a6aa675a5244cefa15c0a0d60dccfaa22fb23

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πŸ‘€︎ u/MoonBearP
πŸ“…︎ Oct 15 2021
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Census Block Centroids of Texas

Hello everyone, I just had a quick question I was hoping someone could help me with. I have a shapefile of boundaries of Texas census blocks and I need to get the centroids of each of these census blocks, but I am unsure how I would be able to do that. I have tried using the mean center tool, but only some of the census blocks show up after using this tool. If anyone would be able to help with this at all, it would be greatly appreciated!

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πŸ‘€︎ u/JacobJ0623
πŸ“…︎ Oct 22 2021
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How to get centroid points to move away from geo?

I got a geo fraction and a foreachloop to put each piece on it's centroid, and want the pieces to move away from the original geo in a pulse-like style, only moving directly away from where it was if that makes sense. I've tried different ways and just haven't found the solution to it.

I feel like it is a simple line of code involving the Normals of specific faces but can't quite figure out what that is. Any help would be appreciated!

Can put a link of the file if needed.

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πŸ‘€︎ u/MrShamShamWowWow
πŸ“…︎ Oct 20 2021
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Fazzaco Weekly Digest: Centroid Solutions Partners with Samtrade FX; Revolut Hires Juan Miguel Guerra; IC Markets Sponsors Six Football Clubs

https://preview.redd.it/jdg8679yn0x71.png?width=605&format=png&auto=webp&s=d9396d13886ba819345226b7f9282e9705c5a277

Take a look at the latest happenings in this week's news digest from around the forex and fintech industry. Here are some of the top headlines from this past week.

1. Centroid Solutions and Samtrade FX Become Strategic Partner

The forex trading technology provider Centroid Solutions and Samtrade FX, an online trading broker that provides forex trading and other related services, have recently announced a strategic partnership.

According to the press release shared with Fazzaco, Samtrade FX will offer their multi-asset liquidity to clients worldwide via Centroid Gateways, an institutional grade connectivity, liquidity management, execution and reporting system, in addition to deploying the Centroid24 risk management system.

2. Revolut Hires Juan Miguel Guerra as CEO Mexico

Revolut, a UK financial technology firm offering banking services, announced that it has appointed Juan Miguel Guerra as its CEO in Mexico. Guerra will build and lead the financial superapp’s entry to the market.

In his new position, Guerra will build a team in Mexico to lead Revolut’s expansion in the country.

3. TP ICAP and Speedwell Launch First ICAP-Speedwell Climate Index

TP ICAP, a leading provider of market infrastructure and data solutions, announced that it has partnered with Speedwell, the environmental risk-management solution provider, to launch the first ICAP-Speedwell Climate Index.

Developed and maintained by Speedwell, the Index takes a representation of the average global temperature based on data taken from 50 independent, high-quality national weather stations from around the world.

The index is designed to use global weather data to track climate change thereby allowing financial risk related to the rate of climate change to be traded. It provides the underlying data necessary for market participants to transact, tailored structures relating to climate change using over-the-counter futures and options.

4. IC Markets Expands Sport Presence, Sponsoring Six Football Clubs

IC Markets, an Australian-based online retail forex and CFD broker, has has expanded its presence in the sports field and inked sponsorship deals with si

... keep reading on reddit ➑

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πŸ‘€︎ u/Fazzaconews
πŸ“…︎ Nov 01 2021
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Italian M15 centroid. 3d prints by 3dprintingvalley.com reddit.com/gallery/q3us56
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πŸ‘€︎ u/Snoo_23014
πŸ“…︎ Oct 08 2021
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CNC conversion based on Centroid Acorn system.
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πŸ‘€︎ u/captinreddit
πŸ“…︎ May 08 2021
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My workflow using the Drewtronics S5000LED TTS Touch Probe. HSMWorks Solidworks Plugin, Centroid Acorn Control, Multiple WCS. youtu.be/bj_VdWL8MLw
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πŸ‘€︎ u/canadian_as_fcuk
πŸ“…︎ Sep 06 2021
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Started the Typewriter this week. It gets heavy off its centroid, haha.
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πŸ‘€︎ u/crashboxer1678
πŸ“…︎ Aug 31 2021
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Voronoi Map (Thiessen polygons) of Australia with State Capitals as Centroids [OC] [4000x3282]
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πŸ‘€︎ u/I3_0tt0
πŸ“…︎ Jul 11 2021
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[OC] Map of the World but Capitals are Voronoi Centroids
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πŸ‘€︎ u/njanakiev
πŸ“…︎ Aug 04 2020
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Centroid
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πŸ‘€︎ u/RiftalBoi
πŸ“…︎ Apr 21 2021
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Rightoids and centroids may not agree on much, but they do share a love for People of Casualties! imgur.com/i2WWGyZ
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πŸ“…︎ Apr 05 2021
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Straightedge and compass construction: Triangle from its orthocenter, incenter, centroid.

Given 3 collinear points H, I, G where I divides H, G internally. Construct a triangle whose orthocenter, incenter, centroid are H, I, G respectively. Use only straightedge and compass.

edit, assume HI : IG β‰  3 : 1

edit2, H,I,G are distinct

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πŸ‘€︎ u/pichutarius
πŸ“…︎ May 27 2021
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How to find out the maximum force that can be applied to the center of a beam? (given stiffness area, polar moment of inertia of the area at the centroid, and principal moments of inertia of the area at the centroid)

Hello all,

Is it possible to find the maximum weight or force that can be applied to the center of a beam of a given length with the following provided specs? How?

- dimensions: 15x15mm width and height
- weight: 0,297 gram per mm
- material: aluminum , v2.1 6063-T5
- stiffness area: 113,52mmΒ²
- polar moment of inertia of the area, at the centroid = 4705,05mm⁴
- principal moments of inertia of the area, at the centroid:
lx = 2352,52mm⁴
ly = 2352,52mm⁴

The beams in question are openbeam / makerbeamxl.

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πŸ‘€︎ u/trougnouf
πŸ“…︎ Jul 02 2021
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