IF / ELSE Usage within For loop for Specific Iteration Only
显示 更早的评论
When using a FOR LOOP can I do something like when
for i=1:1:15
When i iterates at 9, 10, 12 & 14 ONLY do an additional condition. Is it possible? Can i maybe add in an IF Condition? Would be good if i can sum up al the 4 possibilities within this 1 IF Statement. Thanks!
采纳的回答
Azzi Abdelmalek
2014-2-8
for i=1:1:15
if ismember(i,[9 10 12 14])
% do
end
更多回答（2 个）
Jos (10584)
2014-2-9
As a follow-up, if you only need to perform the statements within a for-loop when the iterator takes specific values, you can change the expression used in the for loop.
for k = 1:10
if ismember(k, [2 5 8])
% statements here
end
end
equals
for k = [2 5 8]
% statements here
end
This neat feature of MatLabs for-loop is easily overlooked ...
2 个评论
Azzi Abdelmalek
2014-2-9
Jos, I don't think that's what Sam asked for. He needs to do a for loop for i=1:15, but he wants to add some lines of code for specific values of i
Jos (10584)
2014-2-10
Yep, I know, (and that's why I posted it as a follow-up). It just serves to illustrate ML functionality when there are NO statements within the for-loop but outside the if-ismember section ...
dpb
2014-2-8
iskp=[9 10 12 14];
j=1;
for i=1:15
if i==iskp(j) && j<=length(iskp)
j=j+1;
% do whatever else here
end
% rest here (or ahead of if if order-dependent)
...
If you can derive the condition for iskp values then you can have any other manner of generating the test as desired.
Also check out
doc switch
doc case
and friends as alternative structures that may be helpful
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