H NG D N S D NG ORIGIN lAB Origin l ph n m m do Origin Lab Corporation vi t, pht tri n t nm 1991. Hi n nay ph bi n l phin b n Oringin 7.5, ho c m i h n l 8.0

Giao di n c a Origin 7.5

Origin chia s li u thnh cc c t, c th ch a t i vi ch c c t v vi ch c dng s li u. M i c t s li u l m t tr ng. a s li u trong Origin, ta c th th c hi n b ng cch Paste s li u t m t file s li u, hay typing b ng tay t ng s , hay l "chuyn nghi p h n" l vo menu File, ch n Import.., sau ch n Import Wizard

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Tnh nng hay s d ng nh t c a Origin l v th . v th , tr c tin c n n p s li u vo cc b ng s li u. Sau , ta vo menu Plot, ch n cch v m mnh mu n. Origin cung c p r t nhi u cch v th khc nhau, r t a d ng. C c v th khng gian 2 chi u v khng gian 3 chi u. y chnh l m t i m m nh c a Origin.

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Sau khi ch n cch v thch h p, b n s ph i ch n cc c t t ng ng v i cc tr c t a (c t no l X, c t no l Y...). Origin cho php v nhi u th trn m t hnh, v 2 c t Y....

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Ch n cc tr c t a

M t th thng th ng m i v trong Origin s c d ng nh d i y, tn cc c t, cc thang chia, cc gi i h n c t ng ch n

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th b n v a quan st ch l d ng th, ta c th ch nh s a cc khung c a th , tn cc tr c, gi i h n thang o, mu s c khung t a ... sao cho p h n. Origin c cung c p tnh nng ny, ch n gi n b ng cch click chu t vo m t tr c b t k, s hi n ra c a s i u ch nh, ty theo b n:

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Th vi n Origin cung c p cc hm s n, ho c c th do ng i dng t nh ngha: + Fit Linear: kh p theo hm tuy n tnh b ng ph ng php bnh ph ng t i thi u + Fit Polynomial: kh p hm a th c (bnh ph ng t i thi u) + Fit Exponential Decay (first order, second order, third order): Fit theo hm phn r+ Fit Exponential Growth: fit hm lu ti n (ki u exp tng ti n) + Fit Gauss: Kh p hm phn b Gauss+ Fit multipeak (Gauss, Lorenzt): kh p theo cc hm a peak, phn b theo quy lu t Gauss ho c Lorent+ Fit sigmoidal: Kh p theo hm phn b Boltzmann+ Non-Linear curve fit: Kh p hm phi tuy n, ng i dng t nh ngha cc hm phi tuy n v cc i u ki n ban u

Ni thm v Non-linear Curve Fity l ch c nng r t m nh c a Origin trong vi c kh p cc hm phi tuy n do ng i dng t nh ngha. N u b n no mu n tm hi u k dng, nn c g ng khm ph tnh nng ny. Khi vo menu ny, b n s ph i vo 1 trong 2 menu con: - Advan Fitting Tool: dng nh ngha cc i u ki n ban u, fit n gi n theo cc hm nh tr c

- Fitting Wizard: Qu trnh kh p hm phi tuy n: t vi c ch n vng s li u, ch n

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hm, ch n ki u...

Ng i dng s th c hi n t ng b c qua l u m t trn c a s + Select Data: Ch n s li u + Select Function: Ch n, nh ngha hm + Weiting: B c, cn th c + Fitting tool: cng c kh p + Result: K t qu

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