Re: Is this a bug in the NetCDF library?

• To: Brian Etheridge <Brian.Etheridge@xxxxxxxxxxx>
• Subject: Re: Is this a bug in the NetCDF library?
• From: John Caron <caron@xxxxxxxx>
• Date: Sat, 17 Sep 2005 09:28:13 -0700

Brian Etheridge wrote:

Hi,

I have recently started using the ucar java class library and have come across what I think might be a bug. I hope this list is the correct one for questions of this type and has some users or developers of this package who can help me.

I am using version 2.2 of the Java library and during testing had a problem with the* ucar.nc2.Variable* class. In the following method:

        Array read(int [] origin, int [] shape)

The following line calculates the last index in the required range. I think it is doing this incorrectly when the statring point (first) is anything other than the first element (0). The routine then crashes a line or two later:

        int last = (shape==null) ? getShape()[i] : first + shape[i] - 1;

I had to change the line to:

        int last = (shape==null) ? getShape()[i] : shape[i] - 1;

This seems to make more sense since it appears that the 'last' variable should contain the index of the last element in the array, rather than a count of the number of elements to be read, which is what the original line of code would suggest it is trying to do (even then I think the code would need some attention). On the other hand this seems like a piece of bread and butter code which is constantly used, so I am worried that I am doing else wrong.

Has anyone come across this problem? Is there a NetCDF developer who can help me?

Thanks
Brian

Hi Brian:

the correct list for this is netcdf-java@xxxxxxxxxxxxxxxx