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T O P I C R E V I E W
Paul.Caste	Posted - 12/09/2003 : 05:36:20 AM When importing ASCII data it would be nice to be able to read compressed ASCII data. Is there a way to introduce such a filter to the ASCII import function? I have written a DLL for importing the binary data we use here but for ASCII data it would be nice to be able to keep all the options from the existing ASCII import function.
4 L A T E S T R E P L I E S (Newest First)
Mike Buess	Posted - 12/09/2003 : 11:53:42 AM Hi Paul, Even with Origin 7.5 you'll need an external program to unzip your files before they can be imported. I'm pretty sure that WinZip will do it from GUI and if you have ample space on your Windows machine I'd suggest you unzip all of your files at once prior to importing. There are also free Windows versions of gzip that can do that from the command line. I don't remember which one I used a few years ago, but a Netscape search turned up this URL. A relatively simple LabTalk script based on the methods discussed in this Forum topic should work on a file-by-file basis in Origin 6. It would require a batch file similar to the following. Here I assume that if the data file is called filename then its compressed version is filename.z (I don't recall gunzip usage so the batch file will probably require some tweaking.)... REM - Gunzip.bat (save to your Origin program folder) @ECHO OFF REM - go to compressed file folder CD %1 ECHO [message] > gunzip.ini ECHO Done=0 >> gunzip.ini REM - call gunzip (fill in arguments) "path to gzip\gunzip.exe" args %2 REM - notify Origin you're done ECHO [message] > gunzip.ini ECHO Done=1 >> gunzip.ini CLS EXIT REM - End of Gunzip.bat # LabTalk script fdlog.dlgName$="Find compressed file"; fdlog.numTypes=1; fdlog.type1$ = [Gzip (.z)] .z; if(fdlog.open(A)==1) break 1; %B=fdlog.path$; // path (%A=filename.z) run -e Gunzip.bat "%B" "%A"; // wait for your gunzip to finish ini.get.filename$=%Bgunzip.ini; for(done=0;done<1;) { done=ini.message.done; }; %A=%[%A,'.']; // strip ".z" extension from file name win -t D MyTemplate; // open new wks from your template (omit template name to use default) open -w %B%A; // import unzipped file # end of LabTalk script Hope that helps. Mike Buess Origin WebRing Member Edited by - Mike Buess on 12/09/2003 11:58:35 AM
hajo_old	Posted - 12/09/2003 : 09:53:55 AM Hello, Paul My code suggestion is based on Origin7.5(Pro). For your purpose I would prefer to take the little money and upgrade to Origin 7.5Professional. The programming features for handling file import by yourself are worth it! Some more features are also really timesaving - like the new plot-dialog! Maybe it would also be a good thing to write an extern dll (like you did for your bin-data) to handle the compression stuff by using MS-VisualC/C++ and then take LabTalk for reading in the Worksheets from the extracted ASCII files. So far Hajo -- -- Dipl.-Ing. Hans-Joerg Koch Siemens VDO, Regensburg SVDO_Origin1
Paul.Caste	Posted - 12/09/2003 : 09:13:42 AM Ho Hajo, Thanks for the suggestion. I am still using version 6, so no OriginC yet, but I will try to call the wizzard from within labtalk. The ascii files are produced on a Unix machine, and are taking lots of diskspace. I would prefer to compress them there with gzip. Best regards, Paul Casteels
hajo_old	Posted - 12/09/2003 : 07:47:21 AM Hello Paul I yust want to make some suggestions ... As you use compressed data files, I guess you have a dll or exe to compress or uncompress your ascii raw data. By using the custom filter functionality you would have to create your own c code for handling the import. First uncompress, then read in the ascii file with a previous created custom filter definition file. I don't know for shure, but it should be possible to call the ascii import filter wizzard (the wizzard dialog for defining the structure of the file) from OriginC (you will be able to call it as a labtalk menu command) so it should be easy to create a custom filter that first uncompresses the file and then calls the pure ascii for input into the wizzard ... The following code shows a filter function I defined for my project: (don't care about the REDIRECTION stuff ...) int ImportSVTxtRangeDataFile(Page &pgTarget, TreeNode &trFilter, LPCSTR lpcszFile, int nFile) { // set redirection int iRedirection = _REDIRECTION_OUTPUT_RESULTLOG("ImportSVTxtRangeDataFile ", true); int iRet; // check filter type if( trFilter.Type.nVal != FILTER_TYPE_USERDEFINED ) return 1; // EXIT // check existance of pgTarget if( EXIST_WKS != pgTarget.GetType() ) return 1; // EXIT Worksheet wks(pgTarget.GetName()); if( !wks.IsValid() ) return 1; // EXIT // import data // ---- // here would be one possibility to place the uncompressing code // ---- // here my own import filter function is called, // maybe it is more efficient to place the uncompressing code // within the import-function ... svTxtData data(lpcszFile); // this is a class I created to capsulate // our txt data handling iRet = data.importASCIIFilter(wks); // call the import member function // Reset Redirection _REDIRECTION_RESET(iRedirection); return iRet; } Hope that helps a bit ... Hajo Feel free to ask for more details ... -- -- Dipl.-Ing. Hans-Joerg Koch Siemens VDO, Regensburg SVDO_Origin1 Edited by - SVDO_Origin1 on 12/09/2003 07:49:43 AM

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