primus
Manual
Introduction
primus User Interface
Menus
The File -menu: 
| Caption | Description |
|---|---|
| Open | Open one or more data files from the hard disk or attached network shares. |
| Close All | Close all data files currently open. To close an individual file, useClosein the context menu of the respective file. |
| Synchronize Ranges | Generally,plot-rangesare adjusted for each opened data file independently. If checked, all ranges are synchronized and modified together. |
| Toggle All | Toggle theplot stateof all currently opened data files. |
| Quit | Close the primus main window and quit the application. |
The Plot -menu: 
| Caption | Description |
|---|---|
| I vs. s (Absolute Scale) | Display the currently selected data files in absolute scale. |
| log(I) vs. s (Absolute Scale) | Display the currently selected data files in logarithmic scale (the default). |
| I*s^2 vs. s (Kratky Plot) | Display the currently selected data files as Kratky Plot. |
| Print the current plot area. Allows high-resolution exports of the plot area if printed to PDF. | |
| Export | Export the current plot area to a graphics file format, e.g. PNG. The output is a low-resolution image at screen resolution, if high(er)-resolution is required, print to PDF. |
| Zoom | _Zoom_and_Move_are mutually exclusive. If_Zoom_is selected, selecting a region on the plot area will zoom in. One may zoom in multiple times, right-click will zoom out. |
| Move | _Zoom_and_Move_are mutually exclusive. If_Move_is selected, the plot area may be dragged to adjust the field of view. Right clicking has no effect. |
| Configure | Configure the plot area. Specify titles, fonts and colors. |
The Tools -menu: 
| Caption | Description |
|---|---|
| Radius of Gyration | Graphical User Interface to estimate the Radius of Gyration of the first selected data file.Right-clickany data file and select_Radius of gyration_from the Tools menu to use any file. |
| Porod Volume | Not implemented yet. |
| Distance Distribution | Graphical User Interface toGNOM. |
The Settings -menu: 
| Caption | Description |
|---|---|
| Show ‘documents’ window | Enable or disable the display of thedocuments window, enabled by default. |
| Show ‘documents’ toolbar | Enable or disable the display of thedocuments toolbar, enabled by default. |
| Show ‘plot’ toolbar | Enable or disable the display of theplot toolbar, enabled by default. |
| Configure primus | Open the primussettings dialog. |
The Help -menu: 
| Caption | Description |
|---|---|
| Help Contents | Opens the ATSAS help browser. |
| About primus | Information about primus. |
| About Qt | Information about Qt. |
Toolbars
The Documents -toolbar: 
The entries in this toolbar are identical to those described in the File -menu.
This toolbar can be enabled or disabled in the corresponding entry in the
Settings -menu.
The Plot -toolbar: 
The entries in this toolbar are identical to those described in the Plot -menu.
This toolbar can be enabled or disabled in the corresponding entry in the
Settings -menu.
Dock Windows
Dock windows can be dragged and freely moved.
The Documents -Window: 
This dock window can be enabled or disabled in the corresponding entry in the
Settings -menu.
| Field | Description |
|---|---|
| Filename | The basename of the data file openend; the corresponding curve is shown in the plot area if checked. |
| Range From | First point of the data file to plot. Ranges between files are independent, but may besynchronized. |
| Range To | Last point of the data file to plot. Ranges between files are independent, but may besynchronized. |
| Concentration | Concentration as extracted from the data file. May be temporarily changed in the dialog. To change persistently, open the file in anexternal editor, modify andreloadafterwards. |
| Multiplier | Scales the corresponding function by the value specified. Default is 1.0, i.e. no scaling at all. |
Right-clicking in the free area of the documents window opens the **context menu of the documents** -window:
The entries in this menu are
identical to those described in the File -menu.
Right-clicking a filename opens the **file-related context menu** : 
| Caption | Description |
|---|---|
| Save As … | Save themultiplied data rangeto a new file. |
| Open with external editor | Open the associated data file in the specifiedexternal editor. |
| Reload | Reload the associated data file, necessary to make changes in the file effective. |
| Browse | Replace the currently opened data file by another at the the position in the document list. |
| Close ‘filename’ | Close the currently loaded data file and remove the entry in the document list. |
| Angular Scaling | |
| Tools | The entries in the sub-menu are identical to theTools-menu, but tools will be applied to the currently selected file, not the first selected in the list. |
Dialogs
The primus Settings dialog: 
| Field | Description |
|---|---|
| Path to ATSAS binaries | |
| Path to ATSAS help file | |
| External editor | Editor to use toopen filesin. |
Operations
Average
Subtract
Adjust
Merge
AutoMerge
Examples
Extrapolation to Zero Concentration
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