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Plot

This option allows one to plot the results of almost any nMOLDYN analysis.

Pressing the Plot button will pop up the dialog shown on figure 4.64

Figure 4.64: The dialog from where the results of nMOLDYN analysis can be plotted.

The following input fields controls the parameters used to plot variables coming from a NetCDF file:

- NetCDF input file
  Format: string
  Default: the loaded NetCDF filename if one is already currently loaded. Nothing otherwise
  Description: this widget allows to specify the name of the NetCDF file whose contents should be plotted.

- Variables
  Format: not an editable etry
  Default: no variable selected
  Description: this widget allows to specify the NetCDF variables that should be plotted. When loading the NetCDF file, nMOLDYN distinguish between 1D and 2D arrays. The 1D arrays are stored as X and Y variables and displayed into their corresponding X and Y variables listboxes. The 2D arrays are stored as Z variables and displayed into their corresponding Z variables listbox. In order to select for plotting a set of NetCDF variables, click first on the X variable, then on the Y variable and eventually on the Z variable you want to plot.

- Plot
  Format: not an editable etry
  Default: no plot displayed
  Description: this widget contain the space allocated to display the plots. The plots are generated using matplotlib python graphical library. At the botton of the widget, there are seven buttons that allows to perform various actions on the displayed plot. These buttons are the following:
  - takes you to the first view.

  - the `Back` is akin to the web browser `Back` button. It is used to navigate back between previously defined views. It has no meaning unless, the `Pan/Zoom` and `Zoom to rect mode` modes, defined below, have been used. This is analogous to trying to click `Back` on your web browser before visiting a new page. Nothng happens.

  - the `Forward` is akin to the web browser `Forward` button. It is used to navigate forward between previously defined views. It has no meaning unless, the `Pan/Zoom` and `Zoom to rect mode` modes, defined below, have been used. This is analogous to trying to click `Forward` on your web browser before visiting a new page. Nothing happens.

  - activates the `Pan/Zoom` mode. The `Pan/Zoom` button has two modes: pan and zoom. Then put your mouse somewhere over an axes.
    - Pan mode: press the left mouse button and hold it, dragging it to a new position. When you release it, the data under the point where you pressed will be moved to the point where you released. If you press 'x' or 'y' while panning, the motion will be constrained to the x or y axis, respectively.
    - Zoom mode: press the right mouse button, dragging it to a new position. The x axis will be zoomed in proportionate to the rightward movement and zoomed out proportionate to the leftward movement. Ditto for the y axis and up/down motions. The point under your mouse when you begin the zoom should remain in place, allowing you to zoom to an arbitrary point in the figure. You can use the modifier keys 'x' and 'y' or 'CONTROL' to constrain the zoom to the x axis, y axis, or aspect ratio preserve, respectively.

  - activates the `Zoom to rect` mode. Put your mouse somewhere over the plot and press the left mouse button. Drag the mouse while holding the button to a new location and release. The plots limits will be zoomed to the rectangle you have defined. There is also a 'zoom out to rectangle' in this mode with the right button, which will place your entire plot in the region defined by the rectangle you have defined.

  - pops up a dialog from which you can adjust some basic positional plot parameters.
  - pops up a file browser from which you can save the plot to a file. You can save your plot to the following format:
    - Portable Networks Graphics (.png)
    - Enhance Metafile (.emf)
    - Encapsulated Postscript (.eps)
    - Portable Document Format (.pdf)
    - Postscript (.ps)
    - Raw RGBA bitmap (.raw,.rgba)
    - Scalable Vector Graphics (.svg)

  Pressing Return or clicking on the OK button will display the plot for the selected NetCDF variables. Once a plot is displayed, you can change some plot settings by clicking on Settings button that will pop up the dialog shown in figure 4.65.

  Figure 4.65: The dialog from which the plot settings are defined.

  From this dialog you can change many plot parameters such as the plot title, the x and y labels, the x and y ticks size, the x and y scales, the line colors, the line width ... You can also export the curent plot to an ASCII file by clicking on Export plot. This will pop up the dialog shown in figure 4.66.

  Figure 4.66: The dialog from which the current plot can be exported to an ASCII file.

  From this dialog, you will be asked for the range of values to export and a file name for the output ASCII file.

  Finally, pressing the Cancel button will close the plot dialog.

Next: Animation Up: The View menu Previous: The View menu Contents