Using conditional breakpoints to print out value
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi, I'm interested if it would be possible to use/abuse(?) conditional breakpoints to print out the value of a variable to the command window. Sometimes I work with a codebase that is read-only, so I can't insert 'disp()' statements... Thanks!
0 commentaires
Réponse acceptée
Jonathan Sullivan
le 12 Fév 2013
Yes sir. It takes a bit of creativity.
Here's an example. Let's print out "Hi" each time mod(ii,2) == 0.
iff(mod(ii,2),fprintf('Hi.\n') > 0,false)
This will pause the code execution. If you prefer to not pause the code execusion, try:
iff(mod(ii,2),fprintf('Hi.\n') == NaN,false)
Where iff is defined as follows:
function out = iff(cond,vtrue,vfalse)
if cond
out = vtrue;
else
out = vfalse;
end
10 commentaires
Plus de réponses (2)
per isakson
le 12 Fév 2013
Modifié(e) : per isakson
le 12 Fév 2013
The function invoked at the conditional break point shall always return true and not error. Printing should be fine. If the name of variable isn't known beforehand one may use whos/who.
0 commentaires
Matt J
le 11 Fév 2013
Modifié(e) : Matt J
le 11 Fév 2013
Once the code stops at breakpoint, you can highlight a variable or expression in the editor window. Then right-click and select "Evaluate Selection".
You should also be able to see the value of a variable by hovering the mouse over any occurrence of it in the editor.
Voir également
Catégories
En savoir plus sur Historical Contests dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!