[Scilab-users] Regarding simple numerical operations result display.
Stefan Du Rietz
sdr at durietz.se
Sun Mar 17 22:24:40 CET 2013
But this is the ultimate solution without a loop:
-->bool2s(y>a) .* b + bool2s(~y>a) .* y
ans =
- 11. - 6. - 1. 4. 100.
/Stefan
On 2013-03-17 22:05, Stefan Du Rietz wrote:
--------------------
> Maybe one of the last two of these four loops was what you wanted:
>
> -->bool2s(y>a)
> ans =
> 0. 0. 0. 0. 1.
>
> -->for k=bool2s(y>a), if k, disp(b), else, disp(y), end, end
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> 100.
>
> -->for k=y, if k>a, disp(b), else, disp(y), end, end
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> - 11. - 6. - 1. 4. 9.
> 100.
>
> Here, k takes the value of each element in y:
>
> -->for k=y, if k>a, disp(b), else, disp(k), end, end
> - 11.
> - 6.
> - 1.
> 4.
> 100.
>
> Or maybe this is easier to follow:
>
> -->for k=1:length(y), if y(k)>a, disp(b), else, disp(y(k)), end, end
> - 11.
> - 6.
> - 1.
> 4.
> 100.
>
> /Stefan
>
> On 2013-03-17 20:46, Stefan Du Rietz wrote:
> --------------------
>> Sorry,
>> I should have written (?):
>>
>> A multi-element logical array is true (T) only if all elements are T.
>> -->and(y>a)
>> ans =
>> F
>>
>> /Stefan
>>
>> On 2013-03-17 20:35, Stefan Du Rietz wrote:
>> --------------------
>>> -->y=(5*x)-1
>>> y =
>>> - 11. - 6. - 1. 4. 9.
>>>
>>> -->y>a
>>> ans =
>>> F F F F T
>>>
>>> This is F (the first element)
>>>
>>> /Stefan
>>>
>>>
>>> On 2013-03-17 20:23, Modestas Bunokas wrote:
>>> --------------------
>>>> If someone will find 2 min of free time, I would be very grateful.
>>>> I'm
>>>> somehow getting weird result doing simple operation like:
>>>>
>>>> a=7; b=100; x=[-2:1:2]; y=(5*x)-1;
>>>> if y>a then disp(b);
>>>> else disp(y);
>>>> end
>>>>
>>>> --> - 11. - 6. - 1. 4. 9.
>>>>
>>>> Last result (9) is wrong, it should be 100 (b). I fully understand
>>>> that it's because of lack of my knowledge in programming but in few
>>>> days I could not solve or even could not find any help. Because of
>>>> that writing here.
>>>>
>>>>
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