[scilab-Users] vector elementwise division 1./[1 2 3 4]

[bagvian]

Hi there,
Thanks to you both.
I am glad to hear that I am not the only one finding it weird. (I
liked the 1../V1 notation!)
It also took me quite a while to debug it.
Cheers, Bagvian

2008/9/2 Francis Drossaert <Francis.Drossaert at pgs.com>:
> You could also use
>
> 1../v1
> [1]./v1
>
> the latter one is probably the most elegant one since ./ is a vector operation and writing the integer as a vector would adhere to the operation. But I have to agree it is a pitfall, which is not easy to debug since it gives a solution albeit a wrong one.
>
> Cheers,
>
> Francis
>
>
> -----Original Message-----
> From: Antoine ELIAS [mailto:antoine.elias at scilab.org]
> Sent: 02 September 2008 10:00
> To: users at lists.scilab.org
> Subject: Re: [scilab-Users] vector elementwise division 1./[1 2 3 4]
>
> Hi Bagvian,
>
> Yes it's strange but "normal' :D
> Scilab's parser tries to interpret "1." and after "/V1"
> So for Scilab you try to divide 1.0 ( floating point value ) by V1 ( not element wise ) To be sure Scilab use "./" operator, add spaces around operator like "1 ./ V1"
>
> Regards,
> Antoine ELIAS
>
> bagvian a écrit :
>> Hi,
>>
>> Old Matlab user, I wanted to create a simple row vector (say V1) and
>> inverse each of its components with the values to be set in another
>> row vector (say V2). I typed in Scilab prompt:
>>
>> V1=[1 2 3 4] ;
>>
>> V2=1./V1
>>
>> I obtained :
>>
>> V2 =
>>
>> 0.0333333
>>
>> 0.0666667
>>
>> 0.1
>>
>> 0.1333333
>>
>> Amazing, isn't?
>>
>> In order to get the result I expected, I had to type :
>>
>> V2=(1)./V1
>>
>> To obtain:
>>
>> V2 =
>>
>> 1. 0.5 0.3333333 0.25
>>
>> Don't you find this behaviour rather inappropriate?
>>
>> Thanks for your comments, Bagvian
>>
>
>
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