How can I open an Oxfor Instrument Pulsar .fid file in MATLAB?
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I have several .fid files obtained using an Oxford Instrument Pulsar. This datafiles contain information about NMR data, and I can open them with MESTRENOVA with no problem. However, I am trying to create a full code in MATLAB that loads and treats the data, so I don't want to be dependent on external softwares.
When I upload the data into MATLAB using fread, I obtain something like this:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1329415/image.png)
when I know the result should look like this:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1329420/image.png)
Could anybody help me or guide me on how to open this datafiles ?
Thank you
1 个评论
Star Strider
2023-3-19
采纳的回答
Star Strider
2023-3-18
Use zip or a non-MATLAB version of it to create a zip file that encloses the file you want to read, then upload it here. I have no idea what that file format is, however using readtable or a similar function and specifying 'FileType','text' might make it possible to read it in MATLAB if it is a text file.
If it is a binary file, there are options to read those as well if you know the encoding and format.
Otherwise, see if it is possible for the existing software to output a MATLAB .mat file or some format such as .xlsx that MATLAB can read easily.
6 个评论
Star Strider
2023-3-22
As always, my pleasure!
I assume that means that you have solved this (since I don’t see the file having been uploaded to here), and that reading the file was the only problem.
.
Marina Batlló RIus
2023-4-1
Hey! I have been orking with other similar files, and I don't know why I could open some but not most of them. I upload an example file in case you can help me any further. Thank you!
Star Strider
2023-4-1
Those files appeasr to ahve some sort of proprietary encoding scheme. They may be text files, however the encoding is not something available in MATLAB. I cannot find any information online about that format.
Is ti possible to save the file in a different format, such as a MATLAB .mat file?
Uz = unzip('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1342284/avg8.zip')
Uz = 1×5 cell array
{'avg5.fid'} {'avg6.fid'} {'avg7.fid'} {'avg8.fid'} {'avg9.fid'}
for k = 1:numel(Uz)
File{k,:} = readcell(Uz{k}, 'FileType','text');%, 'Encoding','ISO-8859-1')
end
File{:}
ans = 354×10 cell array
Columns 1 through 7
{'□□□□ □ □ □ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Recorded on Oxfo…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Æ í³Ç □©Æ□à¨Ç □→Ç□?□Ç…'} {'Ç□U□Ç HµÆ ì£Ç (□Æ ¦…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'¨G ÄWÇ {□G ý}Ç□o□G …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{' G □Æ û¥G 0□Æ 1¨G …'} {'F 4¡G *³F□□G Ñ→G□@□G…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Ç □□Ç n¸Æ â□Ç È.Æ □□Ç…'} {'E ò□Ç □bF .□Ç "ÑF□`□Ç…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'□G f□G R□G □2G □zG °]…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Ç□Î□G □7Ç %□G □_Ç Î□G…'} {'G □□Ç □ÂF□Á¢Ç □MF …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Ç□Ì□Ç TÆÆ Í□Ç HPÆ□e□…'} {'Ç □jÇ ' } {'6Ç kMÇ XWÇ Æ#Ç @…'} {'□Ç ò\Ç Ý>Ç b:Ç ø]…'} {'□G μF□□□G ÈDF ³¡G …'} {'□G ö□Æ□□□G ¨□Æ□=□G ;E□¨□…'} {'G å}G □9G □`G ë[G…'}
{'Ç□□□G âÏÆ□î□G °{Æ ?□G …'} {'G Ë□G □ËF□ü□G \uF□G□G □…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'kÇ r□Ç □NÇ e;Ç Ô-Ç…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'□F□Ó□Ç híF ' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'wÇ K□G abÇ □@G -F…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
{'G ²tG O.G 5\G oS…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]}
Columns 8 through 10
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{'Ç□á□G □5Ç□´□G ¢ZÇ ÷fG…'} {'□G Ú□Ç ääF□7□Ç ®□F□(□Ç…'} {'\Ç ª4Ç À9Ç dSÇ S□…'}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
{[<missing> ]} {[<missing> ]} {[<missing> ]}
ans = 411×10 cell array
Columns 1 through 9
{'□□□□ □ □ □ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Recorded on Oxfo…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□G þ3Ç□.□G Ç →□G ª²Æ□…'} {'éF□ø£G □□F□«G□E V°G Ø…'} {'G □kÇ dRG WPÇ □qG 2'} {'Ç Ó□G I□Ç Á□G 2¶Æ□²□G…'} {'EÇ□□□G "jÇ ÌvG□ï□Ç zP…'} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□Ç °Æ□v□Ç Ü□Æ :□Ç □□E□…'} {'G ò□G ä□G Æ□G Ú¼F ©□…'} {'QF□Ö□G À½D□/□G □□Æ□°□G ¾…'} {'LÇ vG vlÇ HYG□□□Ç …'} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G ¬□Ç òÄF□□□Ç □TF□e□Ç À…'} {'□F Ù□G `ÞÄ□□□G □QÆ ò□G…'} {'□Ç ´Ä□s□Ç?Æ É□Ç ¨ºÆ…'} {'□Ç eE□G□Ç □pF □□Ç …'} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G □fÇ □2G □NÇ ÀPG u…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç □dÇ ÆÈÆ tvÇ XxÆ…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□Ç ðÃE Õ□Ç `□F <zÇ □…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Æ ò□Ç Ü□Æ rvÇ RçÆ …'} {'·F ßnÇ P□G ÿ\Ç À%…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□G J□Æ□Ä□G ðÒÅ □G Àd…'} {'vG Ö□G ^`G □*G êGG…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G Y□G ~ÌF□□□G □zF□Á□G …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G o□Ç ÀÉF□¡□Ç D{F□' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□Ç □¬E □□Ç □□Å□Þ□Ç LxÆ □x…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'GSÇ Ð+G {=Ç ÜKG …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
Column 10
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
{[<missing>]}
ans = 369×8 cell array
{'□□□□ □ □ □ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Recorded on Oxfo…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç ¤|Ç □2Ç õZÇ ÒSÇ…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G ¤wG □0G J[G □UG …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□Ç FéF□Ä□Ç :□F D□Ç àÍ…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G RjG Í3G ©QG □T…'} {'G tsG ~□G□ë□G ÎÁF□W□…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç □{G jÒÆ□G□G °□Æ□1□G…'} {'ÌÆ fuÇ ìlÆ ñ□Ç □Å□…'} {'F ]□G kC□x□G 8□Æ ' } {'□G R Æ□□□G ¤òÆ□□□G º□Ç …'} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□F *tÇ Ä×F ÷eÇ ¸' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G ¯RÇ ï0G ê:Ç HM…'} {'Æ□H□G □Ã□*□G 8□F □□G j□…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'{Ç .¨Æ □iÇ ~ðÆ ÌS…'} {'□F yiÇ 0ìF ÔYÇ ×□G…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç ÞfG ' } {'ÞÆ :wG ¾□Æ□ª□G @→Æ□□□G…'} {'LF BwG □´F ÞjG ¸û…'} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'GxÇ VÇF□[□Ç Â□F P□Ç…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç zKÇ :ÍÆ [ZÇ □□Æ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'|Ç `□Å □sÇ ä^Æ □gÇ □…'} {'□Ç □#Ç $2Ç →□Ç □IÇ º…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
ans = 364×9 cell array
{'□□□□ □ □ □ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Recorded on Oxfo…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□Ç ÌVÆ□ë□Ç □»Æ □yÇ |□…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç ÈRÇ □'Ç 63Ç oAÇ…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç ¸UÇ TÉÆ ]dÇ □vÆ…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□F µcÇ ÈÛF øTÇ q' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G □@Ç ì)G □*Ç □BG \…'} {'G ;□Ç □BG Â□Ç □VG X…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G GSG ÄØF ÂeG â□F…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'þF @:Ç Á□G â$Ç Î…'} {'Æ heÇ R□Æ □UÇ ' } {'×Æ 0AÇ □□Ç ' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'*Ç □$Ç u' } {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç P;Ç bÛÆ aJÇ ¬□Æ…'} {'Ç □5G £FÇ □□G éWÇ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'#G □□Ç ":G □óÆ `KG …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
{'□G □CG ÖÞF ÐVG ¾¡…'} {'G 6EÇ □□G äXÇ ÖçF …'} {'ZG ¸SF ÌRG J±F ð…'} {'□G ×FG tÎF □XG Ö□F …'} {'Ç b×Æ ¬>Ç □Æ □JÇ…'} {'*Æ 'oG Ô□Æ '} {[<missing>]} {[<missing>]} {[<missing>]}
{'dG XÕÆ ´XG *→Ç 2…'} {'#G Ì□G j8G □áF □KG…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]}
ans = 365×11 cell array
Columns 1 through 9
{'□□□□ □ □ □ …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{' …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Recorded on Oxfo…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G Å=Ç Ë(G □#Ç |' } {'G &□Ç !SG òÎÆ ncG…'} {'lÆ □□G h½Æ VvG □ÿÆ…'} {'Ç x/G □OÇ □□G NaÇ D…'} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G DdÇ ÒÑF æmÇ □□F …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç ¯6Ç □ÙÆ ]GÇ □□Æ j…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'F B[G Ð□F ßOG □ÎF …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç □□Ç W Ç ¼□Ç h5Ç …'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G [;G jÝF □MG ¢F…'} {'PÇ □õD ÀQÇ ¨%F GL…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G ×□G ,'G T□G ¬>G □…'} {'iÆ 7LÇ X¯Æ □8Ç ðë…'} {'5G ¼ðF c"G v□G □' } {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'G :-G °çF □?G ÖF □…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'?G z□Ç µ*G ¥2Ç Õ□G…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'0Ç Ø□G ²AÇ DåF µ…'} {'2G □¼F ÜAG Z□F ÒPG…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'Ç Ë*G □#Ç p□G □5Ç ô…'} {[<missing> ]} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
{'ëF CÇ *¸F ZKÇ □uF…'} {'Ç □0Å □?Ç®E b;Ç □J…'} {[<missing> ]} {[<missing> ]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]} {[<missing>]}
Columns 10 through 11
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
{[<missing>]} {[<missing>]}
% for k = 1:numel(Uz)
% fidi = fopen(Uz{k});
% Line = fread(fidi, 'char*1', 's')
% fclose(fidi);
% end
.
Marina Batlló RIus
2023-4-1
Yeah, it is possible to do so with another software, but was trying to avoid that step because I need a full MATLAB executable that can take those. I haven't find either any information online on how to do it in MATLAB, so maybe there is no solution for those. Anyway thanks for your time!
Star Strider
2023-4-1
The problem is not MATLAB, only the file format. If you can save it to an Excel file or even as a regular text file, that would work. The .fid files are apparently not readable unless it is possible to recover the encoding scheme and program it in MATLAB.
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Sulaymon Eshkabilov
2023-3-18
If it is a binary data file, then you can use fread(). See this doc how to employ fread():
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