Next: Entering an Initial Model and
Up: FIT2D V10.3 Reference Manual V4.0 ESRF98HA01T
Previous: Creation and Using Simple Macro
Both 1-D
and 2-D models may be fitted to
experimental data using a
variety of minimisation methods. 1-D model fitting is available
within the MFIT (MULTIPLE 1-D FITTING) interface. This interface
contains the equivalent of the MFIT program [7].
(2-D fitting is available in the ``KEYBOARD'' interface, within the
FIT sub-menu.)
An example of
the graphics output and the main menu is shown in
Figure 29, Page
.
Figure 29:
The MFIT (MULTIPLE 1-D FITTING) Main Menu
![\begin{figure}
\begin{center}
\includegraphics [width=17cm]{fit2d_mfit.ps}
\end{center}\end{figure}](img33.gif) |
The main menu contains the following commands:
- EXIT: Exits MFIT (MULTIPLE 1-D FITTING) interface and
returns to main ``scientific interface'' menu. Note: data can be moved from
one interface to another.
- FULL: Sets the extent of the ``region of
interest (ROI)'' or ``active data region (ADR)''
to be the whole of the currently defined data.
Note: the filtering commands only affect the current region of interest.
- OUTPUT: General GUI output menu.
Saves the current "region of interest (ROI)" in a selected file with
a choice of file formats.
- ?: Help text with short explanation of commands.
- CONSTRAINTS: Allows individual fitting parameters to be
constrained to fixed values or left free to evolve.
- INITIALISE: Interactive graphical definition of a fit model.
With a choice of fitting functions. (See Section 9.1,
Page
.)
- INPUT: starts an interactive file
selection tool to allow selection of
directories, and of a file for input (see Section 5.1,
Page
).
- HELP: Detailed help text on the interface and the
available commands.
- Z-SCALING: starts a sub-menu which
allows the false colour/ grey scale
used to display image intensities to
be changed. Different automatic and
fixed scaling methods can be selected.
- PRINT: Save the currently displayed data image as a PostScript
file. You are prompted for the name of the output file to create. After the
file is fully written, it may be sent to a PostScript printer for printing.
- EXCHANGE: transfers data from the ``main
program array'' to the ``memory array'', and vice versa.
This may be useful to save some data whilst another operation is
overwriting the ``main program array''.
- MASK: Interactive graphical definition of data regions
to be masked off (or un-masked). Masked pixels and elements are
ignored in the fitting.
- ZOOM-IN: allows a sub-region of the data
to be selected and displayed. It should
be noted that all operations
only work on the current selected region.
- DISPLAY: Enter the GUI general display menu, assuming that
data has been defined.
- OPTIONS: Starts the general GUI OPTIONS sub-menu
which allows various display options to be modified, and
control of the graphical output style. Used to alter the colour table,
etc. after data has been input.
- OPTIMISE: Tries to optimise the fit model to the data values.
This button may be pressed more than once.
- RESULTS: Display of the fitted model parameters. This is
displayed in a text window and may be saved to an output file.
- SET-UP: Graphical form allowing setting of control
parameters.
- TRANSPOSE: Transpose data so that columns before the rows,
and vive versa. The fitting works on the rows, so the TRANSPOSE
command is necessary to fit the column wise data.
Next: Entering an Initial Model and
Up: FIT2D V10.3 Reference Manual V4.0 ESRF98HA01T
Previous: Creation and Using Simple Macro
Andy Hammersley
8/26/1998