Loading general texts in series in a macro.
anna
Fri, 11/20/2009 - 12:38 am
I'm quite new at using Igor and I have a question. I am writing a macro. I have a lot of different waves called 1.dat, 2.dat, 3.dat... and so on (like 100 of them). Each wave contains like 13 columns. What I would like to do a macro to open them in series - I mean creating a new folder in root for each file (which is easy) and then loading each wave in a different folder.
So far I wrote:
function shift (ini,final)
variable ini, final, cont
string file
for(cont=ini;cont
file=num2istr(cont)
newdatafolder f_file
setdatafolder root:f_file
loadwave /g /a=w_file_ "C:\\blabla\\file.dat"
setdatafolder root:
endfor
end
I would like to know which commands to use to load 1.dat, 2.dat and so on, because obviously if I write loadwave /g "C:\\blabla\\file.dat" Igor looks for file.dat, even though I defined (or tried to...) a string called file. I want him to understand that he has to load as a general text all the files in order. So I called a string 'file' and then a variable 'cont' in order to use numbers in the string: how do I tell him that 'file.dat' in loadwave is a string and not the name of the file?
Well obviously it doesn't work.
Also (but I think it's the same kind of problem), when I call the newdatafolder Igor calls it f_file, while I want him to call it f_1 if I'm opening 1.dat, f_2 if I'm calling 2.dat and so on. Otherwise the macro doesn't work because after he loaded 1.dat in the folder f_file Igor says that a folder called f_file already exists. How can you blame him!
I hope I could explain correctly my problem, otherwise please let me know. And thank you very much for your time!
Anna
there was recently a similar question:
http://www.igorexchange.com/node/1225
My suggestion was:
NewPath/O PathName //prompt for folder in which the files are
if (V_flag == -1) //User cancelled dialog
return -1
endif
string ListOfFiles = IndexedFile(PathName, -1, ".dat") // Get list of *.dat files in folder
String CurrentFile = ""
variable i = 0
do
CurrentFile = StringFromList(i, ListOfFiles)
if(strlen(CurrentFile)==0) // no more file to import
break
endif
NewDataFolder/O/S $CurrentFile //make new datafolder
LoadWave/A/D/J/W/K=0/V={" "," $",0,0}/L={0,1,0,0,0} /P=PathName CurrentFile //needs to be adjusted to your files
SetDataFolder ::
i+=1
while(1)
end
Cheers
Christian
November 20, 2009 at 12:56 am - Permalink
Now, problem number 2....
I load the waves in different folders called 1.dat, 2.dat and so on... Inside each folder (which thanks to you contains one wave) I have to do a simple operation which is:
duplicate H Hcorr
duplicate K Knorm
Hcorr += Knorm*tan(30*Pi/180)
where H and K are two columns of the waves. I have to do it for each H and K in each folder. BUT! If I put the command before the SetDataFolder :: that goes back to root it writes the operation in the 1.dat folder and then stops because it doesn't go to the next folder to do the same operation.
Well, I hope that someone cand help me!
Ciao,
Anna
November 20, 2009 at 02:41 am - Permalink
Second, duplicate needs some special attention in loops; execute the following on the command line:
DisplayHelpTopic "duplicate"
this should work:
Duplicate/O H, $"Hcorr"
Duplicate/O K, $"Knorm"
Cheers
Christian
November 20, 2009 at 04:56 am - Permalink
Perhaps you need the missing WAVE declarations and WAVEClear command:
--Jim
NewPath/O PathName //prompt for folder in which the files are
if (V_flag == -1) //User cancelled dialog
return -1
endif
string ListOfFiles = IndexedFile(PathName, -1, ".dat") // Get list of *.dat files in folder
String CurrentFile = ""
variable i = 0
do
CurrentFile = StringFromList(i, ListOfFiles)
if(strlen(CurrentFile)==0) // no more file to import
break
endif
NewDataFolder/O/S $CurrentFile //make new datafolder
LoadWave/A/D/J/W/K=0/V={" "," $",0,0}/L={0,1,0,0,0} /P=PathName CurrentFile //needs to be adjusted to your files
WAVE H, K // Presumably your column/Wave names are H and K
Duplicate/O H Hcorr
Duplicate/O K Knorm // I'm not sure why you need to use Knorm instead of just K, but okay...
Hcorr += Knorm*tan(30*Pi/180)
WAVEClear H, K, Hcorr, Knorm // Next time through the loop the WAVE References aren't set already
SetDataFolder ::
i+=1
while(1)
end
November 20, 2009 at 09:06 am - Permalink
Oh! WAVEClear is just what I also was needing some time ago. Thanks!
--
J. J. Weimer
Chemistry / Chemical & Materials Engineering, UAH
November 20, 2009 at 10:44 am - Permalink
Study the "Data Folder Tutorial". You can open it by choosing File->Example Experiments->Tutorials->Data Folder Tutorial.
This shows how to load sets of waves from a series of files into separate data folders - one data folder per file.
November 20, 2009 at 09:15 pm - Permalink
Hello! First of all, thank you to everybody, Christian, Jim and Hrodstein. Very helpful! Sorry to reply so late but it was the weekend. And now back to work :-(
Secondly, Jim, the WAVEClear command does not exist (is it possible??) in my Igor... I mean it simply doesn't turn blue, it gives me an error and also it doesn't exist in the manual. I have Igor Pro 5.02... may that be the reason?
So, since in the manual says that this command is equivalent to WAVE /Z I tried to use that by writing:
WAVE /Z H, K, Hcorr
and it does the job! So, great.
Another thing. I don't have any Example Experiment in File. May that be due as well to me using Igor Pro 5.02?
Byebye!
November 23, 2009 at 02:28 am - Permalink
WaveClear was added in Igor Pro 6. It is equivalent to this:
Wave w = $"" // Make w refer to no wave
This would be because your Igor Pro installation is fouled up. I would uninstall and reinstall from CD. Then update to the latest in the 5.0x line (5.05A I think).
Or you could uninstall and install Igor Pro 6.1 which you can download here:
htpp://www.wavemetrics.net
In this case you will have 30 days in fully-functional demo mode during which you can purchase an upgrade to 6.1 to convert to licensed mode.
November 25, 2009 at 07:38 pm - Permalink