Re: [LabPython-Users] Labview crash

[Luc E. <luc...@en...>]

Hi Rolf,

thank you for your answer. I am using the script note box (LV 8.0 ; Python
2.5). Here are two examples that describe you the situation :
if I put in the script box the following code :

  from numpy import random  #numpy is version 1.0.5
  a = list(random.permutation(23)) #<-I cast to a list

and I output 'a' to Labview as a Float Vector, everyting goes well, and I
collect the requested vector in Labview.
In the contrary, if I use the following code in the script node (still
outputing 'a' as a Float Vector):

  from numpy import random
  a = random.permutation(23) #<-I don't cast to a list

I get a nice Labview crash instead of an error ! (notice that by using
scipy instead of numpy, it usually also crashes)

Attached is a vi that contains the "crashing" example.

Thank you very much for your kind help,
luc

> Hi Luc,
>
>> I am using the excellent Labpython to run python 2.5 scripts
>> in Labview 8.0 Overall, it works very well. I have however one issue :
>> When I output a variable from python to Labview, and I forget
>> to match correctly the types in the two softwares (for
>> example, output a python numpy array as a Labview float
>> vector), I get a Labview crash.
>>
>> Would it be possible to ensure that Labview simply throws an
>> error in this case ?
>
> Can you elaborate a bit more about this? Are you using the script node
> box or the VIs? Can you provide an example of what you try to do?
>
> Rolf Kalbermatter
>