Merge pull request #1717 from HEXRD/invalidate-grains-table

Invalidate grains table for failed clustering

hexrdgui/indexing/run.py

@@ -380,6 +380,7 @@ def generate_grains_table(self):
         num_grains = self.qbar.shape[1]
         if num_grains == 0:
             print('No grains found')
+            self.grains_table = None
             return
 
         plural = 's' if num_grains != 1 else ''

hexrdgui/rerun_clustering_dialog.py

@@ -2,7 +2,7 @@
 from pathlib import Path
 
 from PySide6.QtWidgets import QDialog, QFileDialog
-from PySide6.QtCore import Qt
+from PySide6.QtCore import QTimer, Qt
 
 from hexrdgui.async_worker import AsyncWorker
 from hexrdgui.hexrd_config import HexrdConfig
@@ -89,6 +89,10 @@ def on_finished():
             runner.accept_progress()
             runner.confirm_indexing_results()
 
+            if runner.grains_table is None:
+                # The previous step must have failed. Show again.
+                QTimer.singleShot(0, self.exec)
+
         def on_rejected():
             # Since this is a QueuedConnection, we need to accept progress here
             runner.accept_progress()