# Origin 曲线拟合

1. Fitting→Nonlinear Curve Fit→Open Dialog...

   ```{figure} image/Origin_Fit/1695631144335.png
   ---
   alt: origin_fit_1
   ---
   origin fit 1
   ```

2. 弹出对话框, 选择拟合方法或函数.

   ```{figure} image/Origin_Fit/1695631176689.png
   ---
   alt: origin_fit_2
   ---
   origin fit 2
   ```

3. 点击code, 在右侧输入公式, 左侧依次改变条件.

   ```{figure} image/Origin_Fit/1695631184773.png
   ---
   alt: origin_fit_2
   ---
   origin fit 3
   ```

   ```{figure} image/Origin_Fit/1695631201904.png
   ---
   alt: origin_fit_2
   ---
   origin fit 4
   ```

4. 点击parameters, 可以给出初始值, 可以固定一些你想固定的. 初始值也可以在上一步parameter initial 给出.

   ```{figure} image/Origin_Fit/1695631222920.png
   ---
   alt: origin_fit_2
   ---
   origin fit 5
   ```

5. 然后点击fit.