Thread: [Octave-cvsupdate] SF.net SVN: octave:[10672] trunk/octave-forge/extra/ncArray

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Revision: 10672
          http://octave.svn.sourceforge.net/octave/?rev=10672&view=rev
Author:   abarth93
Date:     2012-06-22 15:51:46 +0000 (Fri, 22 Jun 2012)
Log Message:
-----------


Modified Paths:
--------------
    trunk/octave-forge/extra/ncArray/inst/@CatArray/subsref.m
    trunk/octave-forge/extra/ncArray/inst/@ncArray/ncArray.m
    trunk/octave-forge/extra/ncArray/inst/test_ncarray.m

Added Paths:
-----------
    trunk/octave-forge/extra/ncArray/COPYING

Added: trunk/octave-forge/extra/ncArray/COPYING
===================================================================

--- trunk/octave-forge/extra/ncArray/COPYING	                        (rev 0)
+++ trunk/octave-forge/extra/ncArray/COPYING	2012-06-22 15:51:46 UTC (rev 10672)
@@ -0,0 +1,337 @@
+                    GNU GENERAL PUBLIC LICENSE
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Modified: trunk/octave-forge/extra/ncArray/inst/@CatArray/subsref.m
===================================================================
--- trunk/octave-forge/extra/ncArray/inst/@CatArray/subsref.m	2012-06-22 15:20:33 UTC (rev 10671)
+++ trunk/octave-forge/extra/ncArray/inst/@CatArray/subsref.m	2012-06-22 15:51:46 UTC (rev 10672)
@@ -52,7 +52,9 @@
         end
         
     end
-    
+elseif strcmp(idx.type,'.')
+  % load attributes from first array
+    B = subsref(self.arrays{1},idx);
 else
     B = subsref_canonical(self,idx);
 end

Modified: trunk/octave-forge/extra/ncArray/inst/@ncArray/ncArray.m
===================================================================
--- trunk/octave-forge/extra/ncArray/inst/@ncArray/ncArray.m	2012-06-22 15:20:33 UTC (rev 10671)
+++ trunk/octave-forge/extra/ncArray/inst/@ncArray/ncArray.m	2012-06-22 15:51:46 UTC (rev 10672)
@@ -1,6 +1,42 @@
+% V = ncBaseArray(filename,varname)
+% V = ncBaseArray(filename,varname,'property',value,...)
+% create a ncBaseArray that can be accessed as a normal matlab array.
+%
+% For read access filename can be compressed if it has the extensions
+% ".gz" or ".bz2". It use the function cache_decompress to cache to
+% decompressed files.
+%
+% Data is loaded by ncread and saved by ncwrite. Values equal to _FillValue
+% are thus replaced by NaN and the scaling (add_offset and
+% scale_factor) is applied during loading and saving.
+%
+%
+% Example:
+%
+% Loading the variable (assuming V is 3 dimensional):
+%
+% x = V(1,1,1);   % load element 1,1,1
+% x = V(:,:,:);   % load the complete array
+% x = V();  x = full(V)  % loads also the complete array
+%
+% Saving data in the netcdf file:
+% V(1,1,1) = x;   % save x in element 1,1,1
+% V(:,:,:) = x;
+%
+% Attributes
+% units = V.units; % get attribute called "units"
+% V.units = 'degree C'; % set attributes;
+%
+% Note: use the '.()' notation if the attribute has a leading underscore 
+% (due to a limitation in the matlab parser):
+%
+% V.('_someStrangeAttribute') = 123;
+%
+% see also cache_decompress 
+
+% hidded constructor signature:
 % data = ncArray(filename,varname)
-% data = ncArray(var,dims,coord)
-% data with coordinate values
+% is used to create data with coordinate values by ncCatArray
 
 function retval = ncArray(varargin)
 

Modified: trunk/octave-forge/extra/ncArray/inst/test_ncarray.m
===================================================================
--- trunk/octave-forge/extra/ncArray/inst/test_ncarray.m	2012-06-22 15:20:33 UTC (rev 10671)
+++ trunk/octave-forge/extra/ncArray/inst/test_ncarray.m	2012-06-22 15:51:46 UTC (rev 10672)
@@ -1,5 +1,5 @@
 function test_ncarray()
-% test ncBaseArray, ncCatArray, ncArray and ncCatArray
+% test ncBaseArray, ncCatArray and ncArray
 
 varname = 'SST';
 
@@ -58,14 +58,44 @@
 assert(isequalwithequalnans(3 * r,SST_ref));
 
 
+
+%%% test ncArray
+
+% reading
+
+copyfile(files{2},tmpfname);
+SST = ncArray(tmpfname,varname);
+test = SST(:,:,:);
+SST_ref = ncread(tmpfname,varname);
+
+assert(isequalwithequalnans(test,SST_ref))
+assert(isempty(SST(:,:,:,[])));
+assert(isequalwithequalnans(SST_ref, SST(:,:,:,1)))
+
+ind = floor(numel(SST_ref) * rand(100,1))+1;
+assert(isequalwithequalnans(SST(ind),SST_ref(ind)))
+
+% writing
+
+r = round(randn(size(SST)));
+SST(:,:,:) = r;
+SST_ref = ncread(tmpfname,varname);
+assert(isequalwithequalnans(r,SST_ref));
+
+SST(:,:,:) = 3 * r;
+SST_ref = ncread(tmpfname,varname);
+assert(isequalwithequalnans(3 * r,SST_ref));
+
+
+
 %%% CatArray
 
 % reading
 
 CA = CatArray(3,{...
-    ncBaseArray(filename,varname),...
-    ncBaseArray(files{2},varname),...
-    ncBaseArray(files{3},varname)...
+    ncArray(filename,varname),...
+    ncArray(files{2},varname),...
+    ncArray(files{3},varname)...
     });
 
 assert(isequalwithequalnans(size(CA),[220   144     3]))
@@ -84,9 +114,9 @@
 assert(isequalwithequalnans(SST_test,SST_ref))
 
 CA2 = CatArray(4,{...
-    ncBaseArray(files{1},varname),...
-    ncBaseArray(files{2},varname),...
-    ncBaseArray(files{3},varname)...
+    ncArray(files{1},varname),...
+    ncArray(files{2},varname),...
+    ncArray(files{3},varname)...
     });
 
 SST_test = CA2(:,:,:,2);
@@ -162,7 +192,7 @@
 
 
 if 1
-    % test ncArray (constructor: ncData(var,dims,coord)
+    % test ncArray (constructor: ncArray(var,dims,coord)
     
     SST = ncBaseArray(filename,varname);
     SST_ref = ncread(filename,varname);
@@ -229,5 +259,6 @@
 SST_ref = ncread(files{2},'SST');
 assert(isequalwithequalnans(SST_test,SST_ref))
 
+assert(strcmp(CA2.units,'degC'));
+
 disp('All tests passed.')
-

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Thread: [Octave-cvsupdate] SF.net SVN: octave:[10672] trunk/octave-forge/extra/ncArray

A collection of packages providing extra functionality for GNU Octave

octave-cvsupdate