Having plotted a workspace/spectrum containing small numbers (<1E-4) I should be able to rescale it manually. For example I may want y=0 at the bottom.
The plot settings dialog “Lower limit” and “Upper limit” only allows fixed point entry and a maximum of 4 decimal places. It is very reluctant to accept E or e for scientific notation and having done so, on re-entering the dialog it has re-rounded the number to fixed point.
Generate a workspace with small Y numbers (mine is a suitably normalised Dark Counts run). Plot it (spectrum line plot or colour plot). Open the settings and try to rescale it.
To enter scientific notation it is necessary to ensure the content of the field is a valid number at all times. So type “1.5”, then move the cursor back and insert “e” and then “-” to get “1.e-5”. Alternatively pasting a fully formed number from elsewhere seems to work.
Mantid 4.1, Workbench. Tried on Windows, probably all.