Re: Lookup table problem

[Tim Mooney <mooney@aps.anl.gov>]

The calc module (http://www.aps.anl.gov/bcda/synApps/calc/calc.html) has an
example of this (the interp.db database, and the interp.c aSub routine), 
though
with only two lookup-table arrays. (That is, it maintains arrays X, 
Y1(X), Y2(X).)

Interp has some extra stuff you probably don't want, as it supports 
building lookup
tables point-by-point at run time, and it can interpolate with a 
polynomial of order 1-10.
It uses autosave to load arrays (also to save them, if they are modified 
at run time).

Tim Mooney


Silver wrote:
> hi, 
>
>   I need to implement a function for insertion device like this:
>   Read a two-dimensions table file from the disk, which is values for gap positions and Correction coil power supplies (one gap value corresponding to 4 power supply value). If a gap position is set from the operator, four power supplies will be set automatically.
> I want to use SNC language to do this, for reading the data from disk, use an asub record for it. Is it ok? Is there any better ways? Did anyone finish this job before? 
>   Any suggestions are appreciated.
>   
>
>
> Best regards
> Geyang  2010-10-21
>
>
>   


--
Tim Mooney (mooney@aps.anl.gov) (630)252-5417
Software Services Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab