Hi Hugh,

you are probably doing things in the batch agenda, that make you require or
prefer a batch agenda. But if it's just about multiple LOS - they can also
be done in a single, non-batch run (that's why sensor_los is a matrix; one
of it's dimensions is the number of LOS, or in a more general way the
"number of measurement blocks" as the doc calls it).

Best wishes,

On Thu, Jul 18, 2019 at 9:46 AM PUMPHREY Hugh <hugh.pumph...@ed.ac.uk>

> Dear ARTS gurus,
> I am trying to use ARTS's batch feature to do calculations for a range of
> values of sensor_los.
> The relevant bit of my control file goes:
> VectorCreate(my_loses)
> VectorSet(my_loses, [180,170,160,150,140,130])
> Print(my_loses)
> IndexSet(ybatch_n,7)
> AgendaSet(ybatch_calc_agenda){
>     Extract(sensor_los,my_loses,ybatch_index)
>     Print( ybatch_index, 0 )
>     Print( sensor_los, 0 )
>    ## Actual calculations including iyCalc go here
> }
> But I get an error in the Extract()  method which says:
> Workspace variable belongs to the wrong group: my_loses is not
> ArrayOfMatrix, it is Vector
> At the root of this is that sensor_los is a matrix, even though it has
> only one element. I have tried a few other combinations of creating a
> matrix instead of a vector and/or using Select() instead of Extract() to
> extract a value from it. Select() was no good because  ybatch_index is an
> index, not an array of index.
> What am I doing wrong? How do I create a 1-D array of numbers which
> Extract() will extract a single value from? I am sure I am being really dim
> here :-(
> Best wishes
> Hugh Pumphrey
> The University of Edinburgh is a charitable body, registered in Scotland,
> with registration number SC005336.
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