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--- ufit:help:tips [2017/10/23 10:12] – pcermak
+++ ufit:help:tips [2017/10/24 07:28] (current) – [Fit curve from the file] pcermak
@@ Line 21: / Line 21: @@
              aa.data.meta.title += ', stt=%0.2f' % aa.data.meta.gamma
-===== Fit background from the file =====
+===== Fit curve from the file =====
 It is possible to have a spectrum/background stored as a xy points in ASCII datafile. This command will load that file, interpolate between the loaded values and then fit the scale of such model. Just add this line to the **Model definition**:
-     Custom('MyBg', 'scale', "scipy.interpolate.interp1d(numpy.loadtxt('I:\Documents\Playground\sinus.txt').T[0], numpy.loadtxt('I:\Documents\Playground\sinus.txt').T[1], kind='cubic')(x) * scale")
+     Custom('MyBg', 'scale', "(lambda data: scipy.interpolate.interp1d(data[0], data[1], kind='cubic')(x) * scale)(numpy.loadtxt('C:\bg.txt').T)")
+Replace **C:\bg.txt** with path to your ASCII file. **MyBg** can be also changed - this is just name of your model.

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