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å é±ã®èšäºã§ãRèšèªïŒRStudioã§ã®ç®è¡æŒç®ãå€æ°ã®äœ¿ãæ¹ãåŠã³ãŸããã
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value <- 5
print(value)
cat('valueã¯', value, 'ã§ã')
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caté¢æ°ïŒè€æ°ã®åŒæ°ããšãããããã®å€ãæååãšããŠã€ãªããŠè¡šç€ºãã
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vec <- c(2, 4, 6, 8, 10)
vec
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cé¢æ°ã®è©³ãã䜿ãæ¹ããã¯ãã«ã«ã€ããŠã¯ãŸãå¥ã®æ©äŒã«èŠãŠãããããšæããŸãã®ã§ãããã§ã¯ãcé¢æ°ã䜿ããšãè€æ°ã®å€ããŸãšããŠæ±ãããã¯ãã«ãšããå€ãäœãããªããã ãªãŒããšããã€ã¡ãŒãžã§æããŠãããŠãã ããã
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sqrt(2)
exp(2)
log(2)
log10(2)
log2(2)
ããããã$${\sqrt 2}$$, $${e^2}$$, $${log_e 2}$$($${\ln 2}$$), $${\log_{10} 2}$$, $${log_2 2}$$ã®å€ãåºåãããŸãã ã«ãã³ã®åŒæ°ã®å€ãå€ããããšã§ãèªç±ã«èšç®ããããšãã§ããŸãã
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abs(5 - 2)
abs(2 - 5)
sign(5 - 2)
sign(2 - 5)
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sin(pi/6)
cos(pi/6)
tan(pi/6)
asin(1/2)
acos(1/2)
atan(1/2)
Rèšèªã§ãpiãã¯ååšçã®å€ãšããŠå®çŸ©ãããŠããŠããã®ãŸãŸå€æ°ãšããŠäœ¿çšã§ããŸãã
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value <- 10 / 3
value #3.333333
round(value)
floor(value)
ceiling(value)
trunc(value)
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vec <- c(1, 2, 3 ,4, 5)
vec + 2
vec - 2
vec * 2
vec / 2
cé¢æ°ã䜿ã£ãŠããã¯ãã«ãšããè€æ°ã®å€ãäžçµã«ããããŒã¿ãçæããŠããã®ã§ãããçæãããã¯ãã«ã¯å€æ°vecã«æ ŒçŽããŠããŸãããããŠããã®ãã¯ãã«ã®ããããã®å€ã«2ãå æžä¹é€ããçµæãäžèšã®ãã®ã«ãªããŸãã
次ã«ã2ã€ã®ãã¯ãã«ã«ç®è¡æŒç®ãé©çšãããšã©ããªãã§ããããïŒã¹ã¯ãªãããšãã£ã¿ã«ä»¥äžã®ããã«æžããŠå®è¡ããŠã¿ãŠãã ããã
vec1 <- c(1, 2, 3 ,4, 5)
vec2 <- c(5, 4, 3, 2, 1)
vec1 + vec2
vec1 - vec2
vec1 * vec2
vec1 / vec2
ä»åã¯ãcé¢æ°ã䜿ã£ãŠå€æ°vec1ãvec2ã®äºã€ã®ãã¯ãã«ãçæããŠããŸããäºã€ã®ãã¯ãã«ãæŒç®ããçµæã¯ããã¯ãã«ã®ããããã®å€ã®åãé çªã«ãããã®ãå æžä¹é€ããŠãã圢ã«ãªããŸãã
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vec <- c(1, 2, 3 ,4, 5)
exp(vec)
log(vec)
sin(vec)
cos(vec)
round(vec / 4)
trunc(vec / 4)
é¢æ°ã®åŒæ°ã«ãã¯ãã«ãæå®ããŠããããšããã¯ãããããã®å€ã«å¯ŸããŠé¢æ°ãé©çšããçµæãåŸãããŸãã
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