2020
Parallel processing in R
· โ˜• 4 min read · โœ๏ธ Hoontaek Lee
๋“ค์–ด๊ฐ€๋ฉฐ ์›Œํฌ์Šคํ…Œ์ด์…˜ ์„ฑ๋Šฅ์€ ๊ดด๋ฌผ๊ฐ™์€๋ฐ ํ•  ์ผ ์—†์ด ๋†€๊ณ ๋งŒ ์žˆ๋‹ค. ๋ณ‘๋ ฌ์ฒ˜๋ฆฌ๋กœ ๋นก์„ธ๊ฒŒ ๊ตด๋ ค๋ณด์ž. ์ด๋†ˆ๋“ค. (ํ•˜์ง€๋งŒ ๋‚ด ์ฝ”๋“œ๊ฐ€ ๋ฉ€ํ‹ฐ์ฝ”์–ด ์‚ฌ์šฉ์œผ๋กœ๋Š” ํ•ด๊ฒฐ๋˜์ง€ ์•Š์„ ์ข…๋ฅ˜

Paper Review: Guo (2019). SAM->iso/anisohydry. NPH
· โ˜• 3 min read · โœ๏ธ Hoontaek Lee
20 May, 2020 (Guo, NPH, SAM->iso/ansiohydry) Guo, J.S., Hultine, K.R., Koch, G.W., Kropp, H. and Ogle, K. (2020), Temporal shifts in iso/anisohydry revealed from daily observations of plant water potential in a dominant desert shrub. New Phytol, 225: 713-726. doi:10.1111/nph.16196 A key reference for applying the SAM framework I have reviewed a paper in which the SAM framework was applied to fluxtower NEE data. I read the paper because I used a similar type of data (i.

The Notebook
· โ˜• 2 min read · โœ๏ธ Hoontaek Lee
What do you want? ์นœ๊ตฌ๊ฐ€ ๋ณด์ž๊ณ  ํ•œ ์˜ํ™”๋‹ค. ๋“ฑ์žฅ์ธ๋ฌผ๋งˆ๋‹ค ๋‚˜๋ฆ„์˜ ์‚ฌ์—ฐ์ด ์žˆ๋‹ค. ์„ฑ๋• ๋…ธ์•„ ํ•˜๋‚˜์˜ ๊ฟˆ๋งŒ, ํ•œ ๋ช…์˜ ์—ฌ์ž๋งŒ ๋ฐ”๋ผ๋ณด๋Š” ์ง‘์ฐฉ ๋•ํ›„๋‚จ ๋…ธ์•„ ๋˜์‹œ๊ฒ ๋‹ค. ๋ฏธ์นœ๋†ˆ ๊ฐ™์ง€๋งŒ ๋ฆฌ์Šค

Hello Apple World
· โ˜• 6 min read · โœ๏ธ Hoontaek Lee
์ค‘๊ณ  ์•„์ดํฐ ๊ตฌ์ž…(2020. 05. 10.) ๋ฐฐ๊ฒฝ ์•ก์ • ํ•˜๋‹จ์ด ๊ณ ์žฅ๋‚˜์„œ ์นดํ†ก ๋ฉ”์„ธ์ง€๋ฅผ ๋ณด๋‚ด๋ ค๋ฉด ์นดํ†ก์„ ํŒ์—…์ฐฝ์œผ๋กœ ๋„์›Œ์•ผ ํ–ˆ๋‹ค. ์ „์— ๋…ธํŠธ3 ์“ธ ๋•Œ 3๋…„ ๋™์•ˆ ์•„๋ฌด๋ฆฌ ๋–จ๊ถˆ๋„ ๊ณ ์žฅ ํ•œ

2020.05.06. ~ 05.08. ์†์ดˆ ์ถœ์žฅ
· โ˜• 2 min read · โœ๏ธ Hoontaek Lee
๊ฐ•์›๋„ ์†์ดˆ ์ถœ์žฅ ์†์ดˆ, ๊ณ ์„ฑ, ํ‰์ฐฝ, … ์ถœ์žฅ. ๋‚ด ์ƒ์— ๊ฐ€์žฅ ๋น„์‹ผ ๊น€์น˜์ฐŒ๊ฐœ๋ฅผ ์‚ฌ๋จน์—ˆ๋‹ค. ๊ณ ์„ฑ ์Šคํ€˜์–ด๋ฃจํŠธ: ์˜ค์…˜๋ทฐ ์นดํŽ˜ ๋ทฐ ์ข‹๋‹ค. ๋‚ด๋ถ€ ๋„์ฐํ•˜๋‹ค. ๋ธ”๋ž™์”จ๋“œ๋ผ๋–ผ๋ฅผ ์ฃผ๋ฌธ

R packages by Hadley Wickham ์ •๋ฆฌ
· โ˜• 32 min read · โœ๏ธ Hoontaek Lee
Getting started Introduction ํŒจํ‚ค์ง€๋ฅผ ๋งŒ๋“œ๋Š” ์ด์œ  ๋‹ค๋ฅธ ์‚ฌ๋žŒ๊ณผ ์ฝ”๋“œ ๊ณต์œ  ๋‹ค๋ฅธ ์‚ฌ๋žŒ๋“ค์ด ๋‚ด ์ฝ”๋“œ๋ฅผ ์‰ฝ๊ฒŒ ์ดํ•ดํ•˜๊ณ  ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๊ฒŒ ๋งค๋‰ด์–ผ ์ž‘์„ฑ ๋‚˜ ์ž์‹ ์ด ๋‚ด ์ฝ”๋“œ๋ฅผ ์‰ฝ๊ฒŒ ์ดํ•ดํ•˜๊ณ  ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๊ฒŒ ๋งค๋‰ด

๋…์ผ ์œ ํ•™ - ์ถœ๊ตญ ์ค€๋น„
· โ˜• 2 min read · โœ๏ธ Hoontaek Lee
Intro MPI-bgc at Jena์—์„œ ๊ณต๋ถ€ํ•˜๊ฒŒ ๋๋‹ค. ์ถœ๊ตญ ์ค€๋น„๋„ ๋ฐ•์‚ฌ ์ง€์›ํ•˜๋Š” ๊ฒƒ๋งŒํผ ๊ณจ์น˜์•„ํ”„๋‹ค. ์—ฌ๊ธฐ์— ์ฐฌ์ฐฌํžˆ ์ •๋ฆฌํ•ด๋ณด์ž. MPI์—์„œ๋Š” ์™ธ๊ตญ์ธ์„ ์œ„ํ•œ ๊ธฐ์ดˆ ๊ฐ€์ด๋“œ๋ฅผ ์ œ๊ณตํ•˜๋‹ˆ

Paper Review: Liu (2019). SAM->NEE across biomes. ELE
· โ˜• 3 min read · โœ๏ธ Hoontaek Lee
1 May, 2020 (Liu, ELE, SAM->NEE across biomes) Liu, Y., Schwalm, C.R., Samuelsโ€Crow, K.E. and Ogle, K. (2019), Ecological memory of daily carbon exchange across the globe and its importance in drylands. Ecol Lett, 22: 1806-1816. doi:10.1111/ele.13363 Why did I read this paper? To apply the SAM framework for my paper, I needed a reference. Professor Ogle recommended this paper for me as I and Liu et al. have the same type of data.

A Study Plan for German
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
๋ชฉ์ : ์ ์‘ํ•˜๊ธฐ ์ ์–ด๋„ 3๋…„์„ ๋…์ผ์—์„œ ๋จธ๋ฌผ๊ฒŒ ๋๋‹ค. ์—ฐ๊ตฌ์†Œ ๊ณต์šฉ์–ด๋Š” ์˜์–ด๋‹ค. ํ•˜์ง€๋งŒ ๋…์ผ ์‚ฌ๋žŒ์ด ๋งŽ๊ณ  ์—ฐ๊ตฌ ์™ธ ์ƒํ™œ๋„ ์žˆ๊ธฐ ๋•Œ๋ฌธ์— ์–ด๋Š ์ •๋„ ๋…์ผ์–ด๋Š” ํ•„์ˆ˜์ผ ๊ฒƒ์ด๋‹ค.

์™ธ๊ตญ์–ด ๊ณต๋ถ€์˜ ๊ฐ๊ฐ
· โ˜• 4 min read · โœ๏ธ Hoontaek Lee
์™ธ๊ตญ์–ด ๊ณต๋ถ€์˜ ๊ฐ๊ฐ - ์†์— ๋‹ฟ์„ ๋“ฏํ•œ ๋†’์ด์˜ ์—ด๋งค Intro ์ง€๋‚œ ๋ฒˆ์— ์„œ์ ์— ๋“ค๋Ÿฌ ์‚ฐ ๋‘ ๊ถŒ ์ค‘ ํ•˜๋‚˜์ด๋‹ค. ๋ชจ๋‹๋ฃจํ‹ด์ด ์•„์นจ์‹œ๊ฐ„์„ ํ™œ์šฉํ•˜๋Š” ์Šต๊ด€์— ๋Œ€ํ•ด ๋งํ•ด์คฌ๋‹ค๋ฉด, ์ด ์ฑ…์€ ๋‚ด ์ฒซ ๋ชจ

๋ชจ๋‹ ๋ฃจํ‹ด (Morning Routine)
· โ˜• 4 min read · โœ๏ธ Hoontaek Lee
๋ชจ๋‹ ๋ฃจํ‹ด โ€“ ์•„์นจ์‹œ๊ฐ„ ํ™œ์šฉ ์ฐธ๊ณ ์„œ Intro ์นœ๊ตฌ๋“ค๊ณผ ์ €๋…์„ ๋จน๊ณ  ์˜ค๋žœ๋งŒ์— ์„œ์ ์— ๋“ค๋ €๋‹ค. ์ƒˆ๋กœ๋‚˜์˜จ ์ฑ…์„ ์Šฅ ํ›‘์–ด๋ณด๋˜ ์ค‘ ๋‘ ๊ถŒ์ด ๋ˆˆ์— ๋„์—ˆ๋‹ค. ๋‘ ๊ถŒ ๋ชจ๋‘ ์ผ๋ณธ์ธ์ด ์“ด ์ž๊ธฐ๊ณ„๋ฐœ์„œ

์ฝ”๋กœ๋‚˜, ์ฐธ์น˜, ๋‹คํŠธ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์ฝ”๋กœ๋‚˜๊ฐ€ ๋‚ณ์€ ์ฐธ์น˜ ์ฝ”๋กœ๋‚˜ ๋•์— ์ฃผ์‹ ์žฌ๋ฏธ์ข€ ๋ณธ ์นœ๊ตฌ๊ฐ€ ์ฐธ์น˜๋ฅผ ์˜๊ฒ ๋‹ค ํ•œ๋‹ค. + ๊ฐ™์ด ๋‚˜์˜จ ๊ฐ„์žฅ๊ฒŒ์žฅ๋„ ์กด๋ง› ์ž˜ ๋จน์—ˆ์Šต๋‹ˆ๋‹ค. ๋‹คํŠธ & ๋น„์–ด ๋งฅ์ฃผ ํ•œ ์ž” ๊ฐ€๋ณ๊ฒŒ ํ•˜๊ณ  ํ—ค์–ด์ง€๊ธฐ๋กœ ํ–ˆ

Advanced R (2nd ed.)
· โ˜• 5 min read · โœ๏ธ Hoontaek Lee
Log 2020-04-12: 23, 24.6 ๊ณผํ•™์›์—์„œ ๊ธฐ์ƒ์ž๋ฃŒ QCํ•˜๋Š” R ์ฝ”๋“œ๋ฅผ ์งฐ๋Š”๋ฐ, ๊ฝค ์• ๋จน์—ˆ๋‹ค. ์ปดํ“จํ„ฐ ๋ฉ”๋ชจ๋ฆฌ๋Š” 8GB. ์ธํ’‹์œผ๋กœ ์‚ฌ์šฉํ•˜๋Š” csv ํŒŒ์ผ์ด ์ตœ๋Œ€ 2GB ์ •๋„๋กœ ํฌ๊ธด ํ–ˆ์ง€๋งŒ ๋ฉ”๋ชจ๋ฆฌ์—๋Š” ๋ฌธ์ œ๊ฐ€