MATLAB: Does importing data using the Import Tool, cause MATLAB to hang

freezegreyimport dataimport-toolMATLABmatlab hangs

I recently installed MATLAB R2017b and I am unable to import a csv or any other file using the import tool. The csv file is only 160 kb and the MATLAB import window goes grey.

How do I resolve this issue?

Best Answer

This issue is likely caused due to incompatible third party toolboxes in the MATLAB path.

Save a backup of the pathdef.m file, and execute the following commands. The command 'which -all pathdef.m' can provide you with location of the 'pathdef.m' file.

>> restoredefaultpath;
>> rehash toolboxcache;

If this resolves the issue, execute:

>> savepath;

Related Solutions

MATLAB: Error when Generating a Script from the Import Tool

For issues like these with example models, check if any files are shadowing build-in MATLAB functions.

In this case, a user-defined "strjoin" function from the MATLAB file exchange was shadowing MATLAB's built-in function of the same name. This caused the errors in the Import tool's "Generate Script" functionality, since it relies on MATLAB's built-in "strjoin" to properly execute.

The solution to avoid shadowing MATLAB's builtin functions is to restore the default MATLAB search path. 1) Before modifying the search path, you can take a backup of your 'pathdef.m' file, which can be located by using the command

>> which -all pathdef

Before proceeding, you should backup this file by copying it to a folder outside of your MATLAB path.

2) After making the backup, please execute the following commands in the MATLAB Command Window to restore the default MATLAB search path:

>> restoredefaultpath
>> rehash toolboxcache

3) After this step, try generating the import script again. If the issue is resolved, then you can save the new MATLAB search path by executing the following command:

>> savepath

MATLAB: Do I receive an error ” The conversion from UNKNOWN to NCHAR is unsupported” when working with DATAINSERT or FASTINSERT in Database Toolbox 3.10 (R2012a)

Support for inserting characters t ypes has been incorporated in Release 2012b (R2012b). For previous product releases, read below for any possible workarounds:

There is a limitation in Database Toolbox 3.10 (R2012a) in the way that it does not support nchars containing only one character.

To work around this limitation please install the attached patch:

1. Log in to an account with appropriate permissions to overwrite files in your MATLAB installation. On Linux systems, this is typically the root account.

2. Locate your MATLAB installation by typing matlabroot at the MATLAB command prompt. This folder is referred to as <MATLAB> in subsequent steps.

3. Exit MATLAB.

4. Download the attached .zip file associated with this Bug Report and store the file in the <MATLAB> folder.

5. Make a backup copy of each of the files listed in the .zip file. To see the contents of the .zip file open the .zip file in Winzip or Linux equivalent and look at the contents.

6. Extract the files from the .zip file.

a. Open the .zip file.

b. Extract the contents of the file to your <MATLAB> folder.

7. Delete the .zip file in the <MATLAB> folder.

Best Answer

Related Solutions

MATLAB: Error when Generating a Script from the Import Tool

MATLAB: Do I receive an error ” The conversion from UNKNOWN to NCHAR is unsupported” when working with DATAINSERT or FASTINSERT in Database Toolbox 3.10 (R2012a)

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