selectdata (MathScript RT Module Function)
Owning Class: plots
Requires: MathScript RT Module (Windows)
Syntax
[x, y] = selectdata
[x, y] = selectdata(n)
[x, y, b] = selectdata
[x, y, b] = selectdata(n)
Legacy Name: ginput
Description
Acquires data points from the current plot by a mouse click. [x, y] = selectdata acquires data points until you press the <Enter> key. [x, y] = selectdata(n) acquires data points until LabVIEW acquires n data points or until you press the <Enter> key.
Inputs
| Name | Description |
|---|---|
| n | Specifies the number of data points to acquire from the current plot. n is an integer. |
Outputs
| Name | Description |
|---|---|
| x | Returns the x-coordinates of the data points LabVIEW acquires. x is a vector. |
| y | Returns the y-coordinates of the data points LabVIEW acquires. y is a vector. |
| b | Returns the index of the mouse button you press. This function returns 1 when you press the left mouse button, 2 when you press the right mouse button, and 3 when you press the middle mouse button. If the mouse contains additional buttons, test this function to determine the value LabVIEW returns when you press those buttons. b is a vector. |
Details
This function is not supported in the LabVIEW Run-Time Engine if you request an output from the function. Either do not request an output or remove this function from scripts before you build a stand-alone application or shared library.
Examples
X = 0:0.1:1;
Y = X.*X;
plot(X, Y, 'bo-')
[x, y] = selectdata