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Binary import of spectra in .spe format!

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[quote][i]Originally posted by osohr[/i]
[br]Origin Version 7.5 SR6 german: 
Operating System: win 2000

Hi,

I can import the pixel intensities of my spectra with the princeton instruments (*.spe) import filter. the x-axis can be calculated with some parameters from the header. The filter writes the complete header (more than 100 lines) into the notes window. 
How can i modify the OC- filter to drop the following parameters into LT  
variables for x-axis calculation:
....
  calib_xpolynom_coeff0 = 538.197893442706
  calib_xpolynom_coeff1 = 0.102408269881526
  calib_xpolynom_coeff2 = -1.53844343185115e-006
  calib_xpolynom_coeff3 = 0.
  calib_xpolynom_coeff4 = 0.
  calib_xpolynom_coeff5 = 0.
  calib_xlaser_position = 532.
....

Maybe the calculation of the x-axis could be done by OC much quicker, but basically the transfer of these specific parameters to LT would be sufficient.

There was a topic with the same problem in 2004, a solution wasn�t documented.

Thanks to all,

Oliver
[/quote]

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T O P I C R E V I E W
osohr	Posted - 03/01/2007 : 08:01:29 AM Origin Version 7.5 SR6 german: Operating System: win 2000 Hi, I can import the pixel intensities of my spectra with the princeton instruments (*.spe) import filter. the x-axis can be calculated with some parameters from the header. The filter writes the complete header (more than 100 lines) into the notes window. How can i modify the OC- filter to drop the following parameters into LT variables for x-axis calculation: .... calib_xpolynom_coeff0 = 538.197893442706 calib_xpolynom_coeff1 = 0.102408269881526 calib_xpolynom_coeff2 = -1.53844343185115e-006 calib_xpolynom_coeff3 = 0. calib_xpolynom_coeff4 = 0. calib_xpolynom_coeff5 = 0. calib_xlaser_position = 532. .... Maybe the calculation of the x-axis could be done by OC much quicker, but basically the transfer of these specific parameters to LT would be sufficient. There was a topic with the same problem in 2004, a solution wasn�t documented. Thanks to all, Oliver
5 L A T E S T R E P L I E S (Newest First)
osohr	Posted - 03/01/2007 : 1:18:01 PM ...yessss!! two spaces in front of every new line! now it works! Thanks a lot!
Mike Buess	Posted - 03/01/2007 : 12:46:44 PM I copied your original list of header lines to a notes window, ran the function and then 'list v'... ... 45 CALIB_XPOLYNOM_COEFF0 1 538.19789 46 CALIB_XPOLYNOM_COEFF1 1 0.10241 47 CALIB_XPOLYNOM_COEFF2 1 -0 48 CALIB_XPOLYNOM_COEFF3 1 0 49 CALIB_XPOLYNOM_COEFF4 1 0 50 CALIB_XPOLYNOM_COEFF5 1 0 51 CALIB_XLASER_POSITION 1 532 Possibly the lines start with # or some other character? Mike Buess Origin WebRing Member
osohr	Posted - 03/01/2007 : 11:52:02 AM ..OK now your function runs smooth. The specific names(filename) of the notes windows were just hidden. But how can i find the variables in LT? They should be num var with the identical names from the header !? list v in LT doesn´t show them. Thanks again oliver
osohr	Posted - 03/01/2007 : 11:38:20 AM Hi Mike, I get two runtime errors when i call this function. It compiled without errors. Do i have to include anything. For the Import of the intensities I use the Import Filter Script: princetoninstruments.c that you can find in originlabs download area. I think the relevant part of the script is this: .. //-------------------------------------------------------------------------- // ImportFileToPage // // Imports an SPE file into the specified page. //-------------------------------------------------------------------------- static int ImportFileToPage(Page& pgTarget, LPCSTR lpcszFile, int nFile) { // Open data file file filSrc; if( !filSrc.Open(lpcszFile, file::modeRead \| file::typeBinary \| file::shareDenyWrite) ) return SPE_ERR_FILE_OPEN; // Read header SPEHEADER spehdr; int iRet = filSrc.Read(&spehdr, sizeof(SPEHEADER)); if( sizeof(SPEHEADER) == iRet ) { // Read data into page if( 1 == spehdr.ydim ) iRet = Import1DimToPage(pgTarget, filSrc, spehdr); else iRet = Import2DimToPage(pgTarget, filSrc, spehdr); spe_SetPageNameAndLabel(pgTarget, spehdr, lpcszFile); // Output header to Notes window if( !iRet ) iRet = spe_HeaderToNotes(spehdr, lpcszFile); } else iRet = SPE_ERR_READ_HEADER; // Close data file filSrc.Close(); return iRet; } ... maybe its easier to modify the original OC script, because with every import of a *.spe file into one project creates another notes window called "Notes". Thank you for your quick response! oliver
Mike Buess	Posted - 03/01/2007 : 09:49:37 AM Hi Oliver, This OC function reads the named Notes window and converts all lines that start with "calib_" to LabTalk variables. I don't know what your import filter looks like now but you might be able to run this function from advanced filter options. void get_calib_info(string strNote) { Note note(strNote); string str1,str2,str = note.Text; StringArray sa; str.GetTokens(sa,'\n'); for(int i=0;i<sa.GetSize();i++) { if( sa[i].Find("calib_")==0 ) { str1 = sa[i].GetToken(0,'='); str2 = sa[i].GetToken(1,'='); LT_set_var(str1,atof(str2)); } } } Mike Buess Origin WebRing Member

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