origin两条曲线拟合步骤

1、以英文版origin75为例：首先是输入数据(以两个拟合曲线为例)：一、在origin里面增加两列：点击鼠标右键，选择addnewcolumnJOriginPro7.5G-D:OriginLab0riginPro75AdministratorUNTITLED-Datal耳FileEditViewPlotColumnAnalysisStatisticsToolsFormatWindowHelp列圖鶴|磴|磺|囲圖Hl圈因届旧阳|圈翻劉e圜启|囲闫慎團燮jTArialBb|t|u|-二创B|二dHA(X)bm13斗眉Paste16AddText.IPHAddNewColumn8ClearWorks

2、heet10GoToRow.12Ma&lc13厂dcr1415Properties.16171819/20二、选择C列，并将其设为X（点击鼠标右键选择）|FileEditViewPlotColumnAnalysisStatisticsToolsFormaitWindowHelp那副團固副谢碍|圖圈圈圈副阳|雀傕圖冒圜启|易函B団qA（x）3bu-HMM厂otrte5eetarell&cetithBl川Fly11V三、从excel表格中选择需要的数据复制过来iiaaiBiaiaiaiai圃固阖則回判闔出ini可?二1严1打口1蚓叫卜血H旳斗|a(xijIriDYZ|然后是曲线拟合:一、画散点图全

3、选数据后点击表格左下角的散点符号即可画出散点图二、断开两组数据的关联任选一点，双击，将dependent改为independentE）-sSlGrapkl自oLayer1卜回Datal:A（K）,B（Y）回Datal:C（X）,D（Y）PlotDetailsSymbolDropLinesGroupEditMode厂Independentr*DependentRight-匚li匸IcfciirmoreoptionSjdragandmoverowstorearrangeifnested三、第一条曲线拟合单击最小梯度数据点，然后选择analysisffitexponentialdecayfirsto

4、rder*1iihii“7t、-uni111E-cuuruni11nvtfmiiiiiminu口iujii-lxjiapriniFileEditViewGraphDataAnalysisToolsFormatWindowHelp四、第二条曲线拟合拟合之前需要将第一条线的拟合方程剪切，因为直接拟合第二条会将第一条曲线方程覆盖先选择需要拟合的数据，选择data2g1data1:C(X),D(Y)ahTi2oTJb|z|u0.023-0.022-0.021-0.020-SimpleMath.SmoothingFFTFilterCalculusSubtractTranslateAverageMulti

5、pleCurvesInterpoIate/ExferapoIate.FFT.aEP00.019一0.018-0.017-0.01B-0.015-FitLinearFitPolynomial.FitExponentialDecayFitExponentilGrowth这样第一条线就拟合出来了FirstOrderSecondOrderJOriginPro7.5G-D:OriginLabOriginPro?5Admini&tiriatorUNTITLED-GraphlUFileEditViewGraphD呂t呂AnalysisToolsFormatWindowHelp0.020-0.019-=0.2

6、37J50.02239=0.2110116.60686=26797031J讳議罔碍lr色后鬲1910亀囂轟冒圍吕凰fjjfW國国TArialfjJ14二pJIu|1迸邺庄二|tIF13.32S-ExpDec.1fitofDaD.02-10.01S-0.017-0.0w-0.015-0.014-0.013-0.012-0.0110.010-0.009-Model：ExpoedEqualion:y-Al*exp-x.l1）+yOWeighting:yMowelghShgcnrsDoFjnginrro/.du-uivuriginLaoxunginrroz3Aamini&TraTorUH111Ltu-

7、FileEditViewGraphDataAnalysisToolsFormatWinck3QArial-0B0.023一SetDisplayRangeResettoFullRangeDataMarkersMoveDataPoints.0.022-Ig1Datal:A(X).B(Y)0.0212g1Datal:C(X),D(Y)0.020一3NLSF1:A(X).BCY)RemoveBadDataPoints.-xpueciiitotu篇Cut齬Copy然后依旧是analysisffitexponentialdecayfirstorder,然后将剪切的方程粘贴上去，这样两个方程就出来了。然后双

8、击进行修改。去掉方程的文本框：鼠标放在文本框上，右键一properties选择none即可I2ExpGrolFitofBDel&teLabelControl.BackgroundplackLin|Properties.DisplayControl增加图名，右键addtext即可。最后是输出图件一、输出图片格式fileexportpage日OriginPro7.5GDAOrigin作圉肝逮立件央2曲g|FileEdEtViewGraphDataAnalysis|2New.H.勻2Open.,.口帚OpenExceL.a匸OpgnSamples-.qAppendZnCloseCtrkNCtrl+O匚td+E应:Tab|SHHMMBlackLineShaduwDarkM：i-blUseSystemFutl-rCenterMuitiLrWhiteOutApplyformatting1Defaijlt:Arial|珂二、输出工程文件filesaveprojectasQSaveProjectSaveProjectAs.Ctd+SSaveWindowAs,SaveTemplate