3-188 Full Command and Function Reference
•
ptype is a command name specifying the plot type. Executing the command TRUTH places
the name TRUTH in ptype.
• depend is a name specifying the independent variable on the vertical axis, or a list containing
such a name and two numbers specifying the minimum and maximum values for the
independent variable on the vertical axis (the vertical plotting range). The default value is Y.
The contents of EQ must be an expression or program, and cannot be an equation. It is
evaluated for each pixel in the plot region. The minimum and maximum values of the
independent variables (the plotting ranges) can be specified in indep and depend; otherwise, the
values in (x
min
, y
min
) and (x
max
, y
max
)(the display range) are used. The result of each evaluation
must be a real number. If the result is zero, the state of the pixel is unchanged. If the result is
nonzero, the pixel is turned on (made dark).
Access: …µ
TRUTH
Input/Output: None
See also: BAR, CONIC, DIFFEQ, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC,
PARSURFACE, PCONTOUR, POLAR, SCATTER, SLOPEFIELD, WIREFRAME, YSLICE
TSIMP
CAS: Simplify expressions involving exponentials and logs, convert base 10 logs to natural logs.
TSTR
Type: Command
Description: Date and Time String Command: Returns a string derived from the date and time.
The string has the form "DOW DATE TIME", where DOW is a three-letter abbreviation of the
day of the week corresponding to the argument date and time, DATE is the argument date in the
current date format, and TIME is the argument time in the current time format.
Access: …Ó
TOOLS LLTSTR ( Ó is the right-shift of the 9 key).
Flags: Time Format (-41), Date Format (-42)
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
date time
→
“DOW DATE TIME“
See also: DATE, TICKS, TIME
TVARS
Type: Command
Description: Typed Variables Command: Lists all global variables in the current directory that contain objects
of the specified types.
If the current directory contains no variables of the specified types, TVARS returns an empty list.
For a table of the object-type numbers, see the entry for TYPE.
Access: !°
MEMORY DIRECTORY LTVARS ( °is the left-shift of the Nkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
n
type
→
{ global ... }
{ n
type
...}
→
{ global ... }
See also: PVARS, TYPE, VARS
TVM
Type: Command
Description: TVM Menu Command: Displays the TVM Solver menu.
Access: …µ
TVM
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