??? In an assignment A(I) = B, the number of elements in B and I must be the same.
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have to write a program for school that can read the temperture in a rooftile dryingroom. A NTC will be connected to a data-acquiring card. but when I want to use formulas on the whole matrix this creates is gives the before stated error. Below is the relevant code (the last 2 lines produce the error):
...
s=daq.createSession('ni');
s.addAnalogInputChannel('dev1',0,'Voltage');
s.Rate=rate;
s.DurationInSeconds=tijdseenheid;
[data,time]=s.startForeground;
...
const_a=input('The value of consistant A: ');
const_b=input('The value of consistant B: ');
weerstand=input('The value of the resistor: ');
ubron=input('The value of the powersupply: ');
data(:)=((ubron-data)*weerstand)/data;
data(:)=const_b/log((data)/const_a);
...
1 commentaire
Jan
le 12 Mar 2012
The error cannot be produced by two lines. Only one command can cause the error - afterwards Matlab stops.
Réponses (1)
Tom
le 12 Mar 2012
I'm not entirely sure what the variables are, but you may be meaning to do an element-by-element divide, not a matrix divide: in this case use ./ not / to divide.
2 commentaires
Jan
le 12 Mar 2012
You definitely need the elementwise operators. If you've tried this already without success, post your trials here.
Voir également
Catégories
En savoir plus sur National Instruments Frame Grabbers dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!