2.2.9 cxt

1 Brief Information
2 Command Line Usage
3 X-Function Execution Options
4 Variables
5 Description
6 Examples

Brief Information

Shift curve in X direction

Command Line Usage

1. cxt 1 10; // shift the plot 1 to right by 10

2. cxt 1 -10 // sift the plot 1 to the left by 10

3. cxt 1 10 4; // shift the peak of the curve to x=10

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

Display Name	Variable Name	I/O and Type	Default Value	Description
Curve to Translate	iy	Input/Output XYRange	<active>	Curve to Translate
Shift Value depending on Mode	val	Input double	0	Specify the shift value
X Data Shifting Mode	mode	Input int	val	Mode to shift X Option list: 0 or val: Specified Amount -- Shift X by val directly 1 or beg: First Point to -- Shift begin point to val 2 or end: Last Point to -- Shift end point to val 3 or low: Minimum To -- Shift valley position to val 4 or high: Maximum To -- Shift peak position to val
Actual X Shift Amount	odx	Output double	<optional>	Output actual X shift amount

Description

Shift curve in X direction according to the different modes

Examples

// The cxt function can be used to shift the x values of a plotted dataset
// New book and import data
newbook;
path$ = system.path.program$ + "Samples\Signal Processing\TR4MM.DAT";
impasc fname:=path$;
// Setup data so each has its own X data
page.xlcolname = 0; // Turn off "Spreadsheet Cell Notation" (SCN) 
wks.col1.type = 1;
wks.col = 1;
wks.insert(Time1);
wks.col = 3;
wks.insert(Time2);
col(1) = data(.01,38,.01);
col(3) = data(.01,38,.01);
// These are the ranges for plotting columns 2 vs 1 and 4 vs 3
range r1 = (1,2);
range r2 = (3,4);
win -t plot line;
plotxy r1 plot:=200 ogl:=1;
plotxy r2 plot:=200 ogl:=1;
set %c -c 2; //set active plot (usually plot 1) color as red
win -z; //Maximize window
// Pause so we can see the shift between our two curves 
type -b Our two plots appear to be offset in the X direction. We can use the cxt command to shift one curve.;

// Now remove the offset by shifting
cxt iy:=r1 val:=-.58;