I am having trouble importing space delimited data from a text file.

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Emily Lubicich 2016-10-19

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https://ww2.mathworks.cn/matlabcentral/answers/308117-i-am-having-trouble-importing-space-delimited-data-from-a-text-file

评论： dpb 2016-10-20

I have a relatively small text file with just two columns and it will not import. I tried using:

filename = 'unpolished_100x';
delimiterIn = ' ';
headerlinesIn = 0;
A = importdata(filename,delimiterIn,headerlinesIn);

and:

X = importdata('-pastespecial')

and I get this message:

Undefined function 'importdata' for input arguments of type 'char'.

Every time I hit "Import data" I receive this message:

com.mathworks.jmi.MatlabException: Undefined function 'uiimport' for input arguments of type 'char'.
  at com.mathworks.jmi.NativeMatlab.SendMatlabMessage(Native Method)
  at com.mathworks.jmi.NativeMatlab.sendMatlabMessage(NativeMatlab.java:265)
  at com.mathworks.jmi.MatlabLooper.sendMatlabMessage(MatlabLooper.java:120)
  at com.mathworks.jmi.Matlab.mtFeval(Matlab.java:1619)
  at com.mathworks.mlwidgets.workspace.WorkspaceCommands$1.runOnMatlabThread(WorkspaceCommands.java:1246)
  at com.mathworks.mlwidgets.workspace.WorkspaceCommands$1.runOnMatlabThread(WorkspaceCommands.java:1241)
  at com.mathworks.jmi.MatlabWorker$2.run(MatlabWorker.java:79)
  at com.mathworks.jmi.NativeMatlab.dispatchMTRequests(NativeMatlab.java:440)|||||||

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dpb 2016-10-20

编辑：dpb 2016-10-20

在 MATLAB Online 中打开

If you can run anything in Matlab then license is not the issue. If you have done the steps Walter suggested and still

which importdata

returns "'importdata' not found." then you (or someone else on the system) has pretty clearly somehow managed to have deleted the m-file and only reinstall or somehow else of getting the copy back is going to fix it.

There are a "veritable plethora" of other input file functions besides importdata, however, so try one of them. If the file is numeric then

data=dlmread('unpolished_100x');

should suffice. If you get a similar message about dlmread as importdata, then it would appear the damage done is more than just to the one file, although it could still be a path issue, but the instructions Walter gave should've restored it to default.

I presume you have exited and restarted Matlab entirely already just in case it's somehow a memory corruption issue that will go away if start over again. Carrying that a step further, rebooting is a moderately drastic step we used to have to do frequently to recover from various Windows problems; that isn't so much any more, thank goodness, but still is a useful club at times.

Emily Lubicich 2016-10-20

That data command returns: Undefined function 'dlmread' for input arguments of type 'char'.

I have restarted matlab but not the computer. I'm leaving for the day so when I start it up in the morning I will give it a try. If it doesn't work then I will contact IT on campus. They can reinstall it. Thank you both for the help!

dpb 2016-10-20

在 MATLAB Online 中打开

That sounds as though the IOFUN directory that holds all i/o routines is either missing or not in the MATLABPATH as was beginning to suspect. Probably reinstallation is going to be the only cure, but what does

path

return?

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