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/* Example.m by Paul Kunz July 1993
* An example of HippoDraw plot function. It's a
* straight line as in
*
* y = a + b*x
*
* Copyright (C) 1993 The Board of Trustees of
* The Leland Stanford Junior University. All Rights Reserved.
*/
/* import the super class */
#import "PFunction.h"
/* Declare the interface */
@interface Example : PFunction
{
}
- init;
/*
* The designated initialzer and the only method that needs to be
* implemented..
*/
@end
@implementation Example
/*
* The following is the function that will be called for plotting
* double x is the value along the x-axis
* double binW is the width of histogram bins. You function
* should use it as overall scale factor.
* double *par is an array of the function's parameters
* double example() returns a double value
*/
static double example(double x, double binW, double *par )
{
double result;
result = binW * (par[0] + par[1]*x);
return result;
}
/*
* The following is the only method that needs to be implemented
*/
- init
{
[super init];
/* Set the name of the function as it will appear in the function browser */
[self setTitle:"Example"];
/* Set the function pointer to the static function above */
[self setFunctionPtr:example];
/* Set the number of parameters of the function */
[self setNumberArgs:2];
/* The following must be invoked only after the above is done */
[self registerFunc];
/* Set the name of the parameters as they will appear
* in the function browser */
[self setArgName:"yintercept" at:0];
[self setArgName:"slope" at:1];
/* That's all folks! */
return self;
}
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.