Spana: Menu Preferences
Note: all user preferences are saved in the
ini-file
Spana.ini.
Preferences / General options:
|
| |
Press this button to reset all preferences and program options to default
values. This resets also plot-window options, calculation options, etc. |
- Program level: normal level is adequate for most users.
Under advanced level additional options and diagram types
may be selected.
- Path to SED & PREDOM: this is the folder where the
programs that make the calculations are located.
This is found out automatically, but it is possible to select another
location if needed by clicking on the folder name.
- Program used to create new data files: The Database program
is automatically selected, but it is possible
to select another program (or location) by clicking on the name.
-
Text Editor: Selected data files may be sent to an external text editor.
By default this is Notepad on Windows systems. Click on the name to select another editor.
- Advanced-level options:
- Debugging:
writes information to the output message window about what
the program is doing. The message window is not visible when the program
starts, but it may be activated from the menu Preferences
in the main window, and it is automatically displayed if an
error occurs.
- Associate file extensions:
(only shown on Windows systems) by selecting these options you
can load data files and display plot files by double-clicking
on the file names in Windows' File Explorer.
|
|
Preferences / Diagram windows
- Screen display
- Keep diagram's aspect ratio: if checked, diagrams will be displayed in the correct x/y ratio,
adding white space to the top or to the right if the window does not have the same
width/height ratio. If unchecked, it will strech the diagram to fit the window:
| Keep aspect ratio: | |
Strech to fit the window: |
|
| |
|
-
Constant size: if unchecked, the diagram is streched to fit the window;
if checked, the diagram is painted on a 21×15 cm
page.
| Constant size: | |
Strech to fit the window: |
|
| |
|
-
Fonts: It is possible to select serif (Times Roman), sans-serif (Helvetica)
or mono-spaced (Courier), change the size, etc.
Selecting none will produce line-drafted texts:
|
Font: None
|
Font: Serif
|
|
-
Colours: in fraction and logarithmic diagrams a colour is assigned to
each chemical species. It is possible to change the background and each of
the colours by clicking on them with the mouse. The reset button will change
back all clours to their default values.
- Printing: these parameters affect the printout from the diagram windows.
|
|
Preferences / Calculation options
Parameters to control SED and
Predom:
- Debugging:
- Keep windows open after calculations:
useful to detect causes for errors, as
output from the calculation programs may then be seen in their
corresponding message panel-tab.
- Write messages in SED & Predom:
will write verbose information to the output message
panel-tab of SED or Predom about the program's performance.
- Debugging in HaltaFall: will write
verbose information to the output message panel-tab of SED or Predom
about the HaltaFall calculations.
- Max. tolerance in HaltaFall:
is the maximum relative tolerance when solving the mass-balance
equation for the outer-loop chemical component. Inner loops have smaller tolerances.
If the total concentration of a component is zero, then an absolute tolerance is used:
tol × 10−6.
For very large or complex systems, with many chemical components, you might
have to increase this value.
- Fraction diagrams: threshold for curves:
is the cut-off value for displaying curves in a fraction diagram. The default is 3%.
Lower the threshold to show minor species:
Default (3% cut-off): |
Threshold at 0.1%: |
|
|
|
(minor species shown) |
-
Table output in SED: output files can be generated by SED with
the curve-values in the plots (see making diagrams).
These are plain text files that will get names
like SED000, SED001, etc. You can use these files to insert the tabulated
values into a spread-sheet (such as Excel), or you can plot the data with
some other plotting program. You may here change the format of these text files,
and their name extension.
|
|
Preferences / Show messages and errors
The output message window, which is not visible when
the program starts, may be activated or hidden with this menu.
The message window is also automatically displayed if an
error occurs.