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- The CDFlist program allows you to selectively list all (or a subset of) the
- variable data values from a CDF. The values can be displayed at the
- screen, output to a text file, or used to create a new CDF (the new CDF may
- be a subset of the original CDF).
-
- The user interface to CDFlist is contained on a single screen which is
- divided into several fixed windows and pop-up windows. The Action Menu
- controls the execution of the program. This menu allows you to move to a
- different window, start the data output, browse a help file, or exit the
- program. You must return to this menu each time you want to select a new
- variable, output option, listing type, or input CDF. This menu may be
- displayed at any time by entering Ctrl-F. Use the up and down arrow keys
- to highlight a choice in the Action Menu and then enter a carriage return
- to execute that function. Two very important windows are the Keypad
- Definition and Message windows. They contain information on keypad
- functionality and program status/error messages.
-
- When CDFlist is executed (and a CDF and/or directory is not entered on the
- command line), you must first specify the CDF you wish to list. If you
- enter a full disk/directory specification (without a CDF name), all of the
- CDFs in the specified directory will appear in a separate pop-up window.
- Use the up and down arrow keys to choose a CDF, and then enter a carriage
- return to list that CDF.
-
- The Output window will then be displayed with the valid choices. Use the
- up and down arrow keys to scroll up and down within the menu and then enter
- a carriage return to select the desired output option. If output to an
- ASCII file or CDF is selected, you will be prompted for a file/CDF name.
- You may enter any file/CDF name valid for the operating system being used
- or accept the default file/CDF name that appears. Do not enter a file
- extension (it is automatically appended). The file extension for a
- generated text file is .dat.
-
- The second window that remains constant on the screen is the Variable
- Selection window. This window allows the user to select the variables that
- are to be listed or put into a CDF along with any desired filters on the
- variables. You will automatically be placed in this window after you have
- entered an output option. You can also enter this window by entering
- Ctrl-F to bring up the Action Menu and then select the Select Variables
- menu option.
-
- There are three fields on each line in the Variable Selection window:
- variable name, minimum filter value, and maximum filter value. You can
- move forward to the next field by entering a carriage return or backwards
- to the previous field with a Ctrl-H. You may also use the up and down
- arrow keys to move vertically through the fields. When the cursor is
- positioned in a variable name field, entering Ctrl-P will display the
- variables in the CDF in a pop-up window. Use the arrow keys to highlight a
- variable and then enter a carriage return to select it. You can quit the
- pop-up window without selecting a variable by entering q (quit). You may
- also use the u and d keys to page up and down in the pop-up window. The
- first line in this pop-up menu contains **SELECT ALL**. Selecting this item
- causes all of the variables in the CDF to be selected.
-
- After selecting a variable, the cursor is positioned in the minimum filter
- field. A filter is simply the range of data that you would like to see
- from the selected variable. If just specifying a minimum filter value is
- sufficient, a maximum filter value need not be entered. You do not have to
- enter a filter for each selected variable. For a line of output (or a set
- of CDF variable values) to be written for a given record/indices, each
- filter must be passed. There are two ways to enter minimum and maximum
- filters. The first is by simply entering the desired values in the
- appropriate fields. The second method can only be used for variables that
- consist of a discrete set of values. This method involves entering a
- Ctrl-P (when in the desired filter field) which displays a pop-up window
- that contains the discrete values for the variable. The desired filter
- value may then be selected.
-
- When all of the desired variables and filters have been selected, enter
- Ctrl-F to display the Action Menu. Selecting "Generate Output" will cause
- the listing or new CDF to be generated. When CDFlist completes the
- generation of the output, the Action Menu is redisplayed. It may then be
- used to select a new CDF to list, respecify the output option, select new
- variables/filters, get online help, or exit the program.
-
- NOTE:
-
- If you are running CDFlist under UNIX, your terminal output will be limited
- to 132 characters per line. If too many variables have been selected, the
- output to a terminal screen will be truncated. Output to a file or CDF,
- however, will not be affected (as many variables as desired may be
- selected).
-