Craig Mattocks wrote:
Hi John,
I modified the CreateNetcdf.java example file (attached) to add a
"valid_range" attribute to the relative humidity field but I am
running into problems.
When I compare the output with the file generated by "ncgen -b
example.cdl", the quotes are contained in the Java-generated file
(see line #88).
What is the proper way to add an attribute like this? I can't find
the info in the Javadocs.
Please excuse me if this is a dumb question.
Thanks!
Craig
You have:
ncfile.addVariable("rh", DataType.INT, dim3);
ncfile.addVariableAttribute("rh", "long_name", "relative humidity");
ncfile.addVariableAttribute("rh", "units", "percent");
ncfile.addVariableAttribute("rh", "valid_range", "0., 100.");
// <--- Problem quotes!
which adds a string-valued attribute. You probably want to create an
integer valued attribute, since rh is an integer.
normally you could go:
ncfile.addVariableAttribute("rh", "valid_range", new Integer(0) );
but since you need an array, its more convoluted:
ArrayInt.D1 valid_range = new ArrayInt.D1(2); // create a 1-d
integer array of length
valid_range.set(0, 0); // set the firsst element
valid_range.set(1,100); // set the second element
ncfile.addVariableAttribute("rh", "valid_range", valid_range);
