How get the creation time from multiple waves

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Fri, 07/15/2022 - 07:16 am

I'm trying to obtain the creation time from multiple waves

Do you know a procedure for that?

Thank you again

Hi,

CreationDate(waveName )
The CreationDate function returns creation date of wave as an Igor date/time value, which is the number of seconds from 1/1/1904.
The returned value is valid for waves created with Igor Pro 3.0 or later. For waves created in earlier versions, it returns 0.
 

Andy

July 15, 2022 at 07:17 am - Permalink

You must iterate over the set of wave names. This will require using a for-endfor loop or a do-while loop. Search for help on the functions WaveList and StringFromList as possible starting points to build and extract values from a wave list. An example in the help for StringFromList shows how to extract values one at a time in a for-endfor loop.

July 15, 2022 at 08:39 am - Permalink

You can also use wave reference waves to pass around lists of waves. A wave reference wave is a wave whose elements contain references to other waves. Here is an example:

Function/WAVE GetModDates(waves)
    WAVE/WAVE waves
   
    int numWaves = numpnts(waves)
    Make/FREE/D/N=(numWaves) modDates  
   
    int i
    for(i=0; i<numWaves; i+=1)
        WAVE w = waves[i]
        double modDT = ModDate(w)
        modDates[i] = modDT
    endfor
   
    return modDates    
End

Function Demo()
    Make/O jack, bob, sam
   
    Make/FREE/WAVE/N=3 waves
    waves[0] = jack
    waves[1] = bob
    waves[2] = sam
   
    WAVE modDates = GetModDates(waves)
   
    int numWaves = numpnts(waves)
    int i
    for(i=0; i<numWaves; i+=1)
        WAVE w = waves[i]
        String name = NameOfWave(w)
        double modDT = modDates[i]
        String dateTimeStr = Secs2Date(modDT,-2) + " " + Secs2Time(modDT,3)
        Printf "Wave %s, modDate=%s\r", name, dateTimeStr
    endfor
End

 

July 15, 2022 at 11:59 am - Permalink