I am trying to find the area beneath a curve of a given data set. In a previous posting I found some jsl script that helps get the area after using analyze>modeling>non-linear and then using a Gompertz function to get the equation. The problem is the code crashes when I try to run it after I have found that equation. Below is the code and thanks for any help or suggestions Clear Globals(); xmin=0; xmax=120; stop=0.000000001; pdf=function( {x} , 1.16929740059737 * Exp( -Exp( 0.46956698638041 - 0.00339164235623826 * x ) ) ); //it appears that {x} is what crashes the program, but without it, that line of code has errors intervals=1; last=0; new=0; flag=0; while(flag==0, intervals=intervals+1; increment=(xmax-xmin)/intervals; total=0; for(i=1, i<=intervals, i++, if(i==1, x=xmin); if(i>1, x=x+increment); total=total + ((pdf(x))/2)*increment; ); last=new; new=total; diff=abs(last-new); if(diff<=stop, flag=1); ); show(intervals); show(total);
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