(v2.2.0-ui)=

# User Interface & Usability

```{note}
These release notes were migrated from the retired Mantid wiki (archive.mantidproject.org).
```

```{figure} ../../images/2_1_release/ImageViewer.jpg
---
class: screenshot
width: 400px
align: right
alt: ImageViewer
---
```

## ImageViewer

The MantidPlot ImageViewer, which was prototyped during the last iteration, is now fully operational and works with both Histogram and event data, to start it right click on a workspace and select "Image Viewer". Specific improvements include:

- Support for matrix workspaces (in addition to the event workspaces previously supported)
- "Immediate" rebinning of the X-axis in either Log or uniform bins
- Coordinated scrolling of the horizontal and vertical cuts along with the image
- Range control for the graphs of horizontal and vertical cuts
- "Two-sided" "psuedo-log" color scales to support negative intensities from subtracting workspaces
- More complete readout of equivalent units for pointed at features

See the ImageViewer page for specific improvements to this tool.

```{figure} ../../images/2_2_release/TofConverter.webp
---
class: screenshot
width: 400px
align: right
alt: TofConverter
---
```

## New "Tof Converter" Interface

A new unit conversion interface has been added to perform simple single value unit conversion between common neutronic units. This is available from the Interfaces menu.

## Other changes

- Plot refresh behaviour: if the axis of a graph have been specifically set, then they will remain fixed if the graph refreshes.
- Instrument View: Unwrapped views of instruments can be plotted without using OpenGL, just uncheck "Using OpenGL" in the display settings. This uses a bit more processing power and is not as exact, but is very useful for remote desktop environments without OpenGL support.
- The Curve Fitting functionality now supports TableWorkspaces as a data source, just use a graph generated from them as normal for fitting.
- You can also convert QtiPlot tables direct to TableWorkspaces, using the Table menu "Convert To Table Workspace" option.
- Several new colour maps have been added.

```{figure} ../../images/2_2_release/Plot2DAxes.webp
---
class: screenshot
width: 400px
align: right
alt: Plot2DAxes
---
```

- More control is availavle of the axis labelling for 2D plots for the top and right axis. Thei is controled in the Preferences Dialog, under 2D Plots->Axes
- The location of windows is now correctly remembered when saving a project
- Hidden algorithm categories are now saved correctly