Fixed warning in fourigui.py code

Author: Filippo Ballerini

news/warning.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+Warning fixed in fourigui.py adding line 397 `axes = list(range(len(size)))` and modifying line 399 `fftholder = np.fft.fftn(fftholder, s=size, axes=axes, norm="ortho")`
+
+**Security:**
+
+* <news item>

src/diffpy/fourigui/fourigui.py

@@ -394,8 +394,9 @@ def fft(self):
         def perform_fft(fftholder):
             fftholder = np.nan_to_num(fftholder)
             size = list(fftholder.shape)
+            axes = list(range(len(size))) 
             fftholder = np.fft.ifftshift(fftholder)
-            fftholder = np.fft.fftn(fftholder, s=size, norm="ortho")
+            fftholder = np.fft.fftn(fftholder, s=size, axes=axes, norm="ortho")
             fftholder = np.fft.fftshift(fftholder)
             fftholder = fftholder.real
             return fftholder