Surface Plotting from Multiple Single-Spectrum Workspaces

docs/source/release/v6.12.0/Workbench/New_features/38171.rst

@@ -0,0 +1 @@
+- Enabled Surface Plotting from Single-Spectrum Workspaces

qt/python/mantidqt/mantidqt/dialogs/spectraselectordialog.py

@@ -100,11 +100,22 @@ def __init__(self, workspaces, parent=None, show_colorfill_btn=False, overplot=F
         self._on_specnums_changed()
         self._on_wkspindices_changed()
 
+    # Check if workspace only has a single spectra, if true set default value to 1
+    def check_num_spectra(self):
+        if not self._ui.specNums.text():
+            if any(ws.getNumberHistograms() == 1 for ws in self._workspaces):
+                self._ui.specNums.setText("1")
+                self._parse_spec_nums()
+
     def on_ok_clicked(self):
+        self.check_num_spectra()
+
         if self._check_number_of_plots(self.selection):
             self.accept()
 
     def on_plot_all_clicked(self):
+        self.check_num_spectra()
+
         selection = SpectraSelection(self._workspaces)
         selection.spectra = self._plottable_spectra
         selection.plot_type = self._ui.plotType.currentIndex()
@@ -291,6 +302,10 @@ def _on_plot_type_changed(self, new_index):
                     self._ui.advanced_options_widget.ui.plot_axis_label_line_edit.setText(WORKSPACE_REFERENCE_NUMBER)
 
                 self._ui.buttonBox.button(QDialogButtonBox.YesToAll).setEnabled(False)
+
+                if self._ui.plotType.currentText() == SURFACE:
+                    self._ui.buttonBox.button(QDialogButtonBox.YesToAll).setEnabled(True)
+
             else:
                 self._ui.advanced_options_widget.ui.error_bars_check_box.setEnabled(True)
                 self._ui.advanced_options_widget.ui.plot_axis_label_line_edit.setEnabled(False)

qt/python/mantidqt/mantidqt/dialogs/test/test_spectraselectiondialog.py

@@ -285,7 +285,7 @@ def test_plot_all_button_disabled_when_plot_type_is_surface(self):
         workspaces = [self._single_spec_ws] * 3
         ssd = SpectraSelectionDialog(workspaces, advanced=True)
         ssd._ui.plotType.setCurrentIndex(3)
-        self.assertFalse(ssd._ui.buttonBox.button(QDialogButtonBox.YesToAll).isEnabled())
+        self.assertTrue(ssd._ui.buttonBox.button(QDialogButtonBox.YesToAll).isEnabled())
 
     def test_plot_all_button_disabled_when_plot_type_is_contour(self):
         workspaces = [self._single_spec_ws] * 3