Duchamp is not writing spectra

[niki@…]

Hello,

My problem with Duchamp is that it seems not to writing the spectra files. The only outputs I got are the result file and the mask fits file.

the input is an image cube with 15 channels.

here is my parmeters file:

imageFile       briggs0.fits
logFile         log1.txt
outFile         L22006_SB138_result_thr04.txt
flagSeparateHeader      true
HeaderFile      header.txt
spectraFile     L22006_SB138_spectra_thr04.ps
flagTextSpectra 1
spectraTextFile L22006_SB138_spectra_file_thr04.txt
spectralMethod sum
minPix          3
threshSpatial	5
flagAdjacent	false
flagATrous      0
snrRecon        10.
snrCut          15.
threshold      0.4
minChannels     3
flagBaseline    0
flagKarma 1
karmaFile duchamp.ann
flagnegative 0
flagMaps 1
flagOutputMask 1
flagMaskWithObjectNum 1
flagXOutput 0

thanks! cheers

Nicoletta Krachmalnicoff

[MatthewWhiting]

Hi Nicoletta,

I had found this problem not too long ago - the issue is that the function to write the text spectra was caught up in the spectral-plotting function, so if you disabled the X output via flagXOutput = 0, then it wouldn't get done.

I'm actually about to release a new (incremental) version - 1.1.11 - that includes a fix to this problem. This will come out in a day or so, and I can cc you on the announcement.

Matt.

[anonymous]

Hi Matt,

thank you for your quick reply! It seems not to work also if I enable the X output..

I can wait for the new version if you really plan to release it soon. :)

Cheers,

Nicoletta

[MatthewWhiting]

Actually, I may have been premature in identifying the problem. The problem I fixed was if pgplot was not enabled (at the build stage), rather than just using flagXOutput.

Did you enable pgplot when you built Duchamp? (Did you in fact build it yourself?) If you haven't enabled it, then that is the cause of the problem. If you have (ie. are you able to produce graphical postscript plots? As these should be produced even with flagXOutput = false) then there is something else wrong. But it is something I can't immediately reproduce.

[anonymous]

Hi Matt,

actually I didn't build Duchamp by myself...what I know is that when I run Duchamp I always get this "PGPLOT has not been enabled, so no graphical output." (in both cases, with flagXoutput=1 or flagXoutput=0). in any case..are you telling me that if pgplot is not working Duchamp can't produce the spectra file? (I mean the spectra.ps file and the text file with the spectra numbers).

thank you! cheers,

Nicoletta

[MatthewWhiting]

Yes, in this case, all the graphical output is disabled, which includes the spectra.ps output. Also, due to the bug I mentioned, the text file is not produced.

This has been fixed in the new version, so you should at least be able to get the text file. It is probably worthwhile asking whoever's in charge of installing Duchamp to look at getting PGPlot linked, otherwise you won't be able to get the graphical output (which does help the analysis, I think).

I released the new version 1.1.11 yesterday, so it's worth getting that. Those responsible can get in touch with me if they come across problems getting it built completely.

[MatthewWhiting]

No further feedback on this, so I'm assuming things have been working. Any other problems please create a new ticket.