Re: unable to install packages into octave in Windows 7

[Philip Nienhuis]

NJank wrote
> On Fri, May 12, 2017 at 9:53 AM, ajiten <

> jahuja73@

> > wrote:
> 
>> I am sorry that I did not notice the version update of the io package.
>> But,
>> still the command ' pkg load io ' seems not to work. It gave warning:
>> warning: (Automatic loading of spreadsheet I/O Java classlibs failed)
>>
>> I just exited & restarted octave again, then it works (means gives no
>> warning).
>> I request some more commands to check the working. This will improve my
>> understanding for future too.
>>
>>
> Ok, i think the IO package uses Java for some interfaces. Maybe something
> before the restart made it unable to find Java.
> 
> The full function reference can be found here:
> https://octave.sourceforge.io/io/
> 
> I think the thing most people want to do with this package is read/write
> Excel files. If you have any .xls or xlsx files, you could try to read one
> into Octave or to write a matrix out to a spreadsheet. There are also some
> csv->cell functions you could try.
> 
> A very simple test script:
> 
> pkg load io
> for idx1 = 1:10, for idx2 = 1:10, a{idx1,idx2} = eye(10)(idx1,idx2);
> endfor, endfor
> cell2csv('testout.csv',a)
> 
> should create a csv file with 0's and 1's.
> 
> xlswrite('testout.xlsx',a)
> 
> should create a similar file as an excel file.
> 
> TESTinput = xlsread('testout.xlsx')
> 
> should read the file back in and assign the array to a variable Testinput

A better check would be to invoke the dedicated test script in the io
package:

test_spsh

that'll sort out the available interfaces (native (OCT), Java- and (on
Windows:) ActiveX based), runs basic tests for each interface found and
reports the results.

Philip



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