Hello I need help with the command mapminmax, since I have configured my premnmx RNA with the comman d but I change it to mapminmax I could adjust the working command y= (ymax-ymin​)*(x-xmin)​/(xmax-xmi​n) + ymin; THANKS

load datoscompletos.txt datoscompletos; p=datoscompletos(:,1:4)'; t=datoscompletos(:,5:6)'; [pn,minp,maxp,tn,mint,maxt] = premnmx(p,t); pnew=pn; tnew=tn; net = newff(minmax(pnew),[10 20 15 20 2],{'tansig' 'tansig' 'tansig' 'tansig' 'purelin'}); net.trainParam.show = 40; net.trainParam.lr = 0.1; net.trainParam.epochs = 100; net.trainParam.goal = 0.01; net.trainParam.min_grad = 0.0000001; net = train(net,pnew,tnew); Yred = sim(net,pnew); save RED net minp maxp mint maxt

Whit command mapminmax

load datoscompletos.txt datoscompletos; p=datoscompletos(:,1:4)'; t=datoscompletos(:,5:6)'; [p1,ps1]=removeconstantrows(p) [pn,ps2] = mapminmax(p); [tn,ts] = mapminmax(t); pr=minmax(pn); s2=size(tn,1); net = newff(pr,[10 20 15 20 2],{'tansig' 'tansig' 'tansig' 'tansig' 'purelin'}); net.trainParam.show = 40; net.trainParam.lr = 0.1; net.trainParam.epochs = 100; net.trainParam.goal = 0.01; net.trainParam.min_grad = 0.0000001; net = train(net,pn,tn); Yred = sim(net,pn); a = mapminmax('reverse',Yred,ts);

THANKS

Answer 1

[Greg Heath]

There are two versions of NEWFF. Both are obsolete. What version of MATLAB and NNTBX are you using? Use the command

 ver

You are making a simple design complicated by not using the defaults given in the help documentation

 help newff; doc newff;

Try the codes in the help and doc demos. Then try with your data.

Search for posted codes in NEWSGROUP and ANSWERS by searching with

newff greg

Hope this helps.

Thank you for accepting my answer

Greg