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- 4.1 NCSA ImageTool Menus
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- NCSA ImageTool 4.1
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- National Center for Supercomputing Applications
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- January 1991
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- 4.1 NCSA ImageTool
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- NCSA ImageTool Menus 4.1
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- National Center for Supercomputing Applications
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- January 1991
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- Chapter 4 NCSA ImageTool Menus
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- Chapter Overview
- Button and Text Field Menus
- Stack Buttons
- Animate Buttons
- Text Fields and Other Control Window Menus
- Directory Text Field Menu
- Image Text Field Menu
- Loading? Menu
- Palette Text Field Menu
- SDS Scaling Menu
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- Chapter Overview
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- This chapter provides information on the hidden menu items
- available in NCSA ImageTool.
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- Button and Text Field Menus
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- Control buttons and text fields often have associated menus. Some
- menus simply provide descriptive text for the buttons. Others
- provide more flexibility or additional functionality.
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- Stack Buttons
- When you switch to stack mode, some buttons appear in the control
- panel. These buttons all have associated menus. The menu for the
- Flush button provides no additional functionality. This menu's
- sole element duplicates the effect of clicking the button. Selecting
- Flush storage purges the contents of the entire stack.
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- The Store, Show, and Delete button menus provide no operations in
- addition to those performed by the buttons themselves, but they do
- add a degree of flexibility. The entries in these menus consist of
- the numbers from 1 to 10. Selecting a number causes the associated
- operation to be performed on the stack entry indexed by the number
- selected from the menu rather than the one indicated by the number
- beside the control. For example, select the entry titled 3 from the
- Store button's menu to store the currently selected image in the
- third stack entry.
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- Animate Buttons
- The menus for these buttons provide no additional function, nor do
- they provide additional flexibility. They simply provide an
- alternative method of initiating the same action. Menus of this
- type are also informative. The text of the menu item provides more
- information about the operation than may be discernible from the
- appearance of the button. For example, the + button has a menu with
- only one item, Increase speed. This is obviously more descriptive
- than the addition symbol.
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- Text Fields and Other Control Window Menus
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- Each text field in the control panel has an associated menu. These
- menus provide a variety of functions in most cases, and there are
- control key equivalents that may be used instead.
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- Directory Text Field Menu
- The field labeled Directory has a menu (Figure 4.1) associated
- with it that contains two options. The Change directory option
- causes the current directory to be changed to the directory you name
- in the text field. Press CTRL-C at the end of the text field to perform
- the same function. Pressing CTRL-N gets the default directory
- name.
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- Figure 4.1 Directory Text Field
- Menu
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- NOTE: The pathname of the current directory is always displayed
- in the black border (title bar) on the top of the NCSA ImageTool
- frame.
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- Image Text Field Menu
- The Image Text Field menu (Figure 4.2) has more elements. If you
- select Load image from file, or press CTRL-L at the end of the text
- field, the named file is loaded. If you haven't specified a complete
- pathname for the file, NCSA ImageTool looks for it in the current
- directory. If you have not changed the current directory since
- changing the text in the directory field, the directory named is not
- the same directory that is searched.
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- Animate from files provides animation from raster file matching
- the file specification in the Image text field. Clear canvas, and
- Scale image file enable you to clear the canvas and scale an
- image, respectively. To initiate these operations you can also press
- CTRL-A, CTRL-C, and CTRL-S, respectively, at the end of the text
- field.
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- Figure 4.2 Image Text Field
- Menu
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- Loading? Menu
- The Loading? menu (Figure 4.3) lists options from which you must
- indicate the type of file you are loading. No key stroke equivalents
- exist for these options, you simply select the file type with the mouse
- cursor. Descriptions of the types of files NCSA ImageTool supports,
- as well as a discussion on HDF files, are provided in Chapter 2,
- "Formatting Your Data Files."
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- Figure 4.3 Loading? Menu
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- Palette Text Field Menu
- The field labeled Palette also has several items in its menu. The
- Load palette from file option loads a color palette from the palette
- file. Refer to the File Formats section in Chapter 2 for details on the
- file format used. Restore previous palette returns the palette to its
- unmodified state. Show palette displays a color strip at the current
- origin point on the canvas. You can also press the alternative
- CTRL key codes for these operations: CTRL-L, CTRL-R, and
- CTRL-S. The menus for Xdim and Ydim fields simply position the
- cursor at the end of these text fields and select the associated text.
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- SDS Scaling Menu
- The SDS Scaling Menu (Figure 4.4) contains options for using a
- popup dialog window, as well as specifications for linear or
- logarithmic scaling of a scientific dataset image file. No
- keystroke equivalents exist for this menu's options. You'll only be
- using this menu if you're loading a SDS.
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- Figure 4.4 SDS Scaling Menu
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