| 1 |
gforget |
1.14 |
function []=example_bin_average(doSmooth); |
| 2 |
gforget |
1.8 |
%object: a bin average example within gcmfaces |
| 3 |
gforget |
1.14 |
%inputs: doSmooth; if set to 1, follow on with smoothing example |
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gforget |
1.1 |
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%%%%%%%%%%%%%%%%% |
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gforget |
1.16 |
%load grid: |
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gforget |
1.1 |
%%%%%%%%%%%%%%%%% |
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gforget |
1.16 |
p = genpath('gcmfaces/'); addpath(p); |
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p = genpath('MITprof/'); addpath(p); |
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| 12 |
gforget |
1.10 |
gcmfaces_global; |
| 13 |
gforget |
1.1 |
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| 14 |
gforget |
1.16 |
mygrid=[]; grid_load; |
| 15 |
gforget |
1.13 |
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gforget |
1.11 |
if myenv.verbose>0; |
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gcmfaces_msg('==============================================='); |
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gcmfaces_msg(['*** entering example_bin_average that will first define ' ... |
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'randomly distributed variable (position and value), ' ... |
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'then bin average it to the chosen grid, ' ... |
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'and finally apply a smoothing filter to it '],''); |
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gforget |
1.8 |
end; |
| 23 |
gforget |
1.1 |
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| 24 |
gforget |
1.11 |
warning('off','MATLAB:dsearch:DeprecatedFunction'); |
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warning('off','MATLAB:delaunay:DuplicateDataPoints'); |
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gforget |
1.1 |
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%%%%%%%%%%%%%%%%%%%%%%% |
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%generate random data |
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gforget |
1.11 |
if myenv.verbose>0; |
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gcmfaces_msg('* generate random data'); |
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end; |
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gforget |
1.1 |
nobs=1e6; |
| 34 |
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lat=(rand(nobs,1)-0.5)*2*90; |
| 35 |
gforget |
1.11 |
lon=(rand(nobs,1)-0.5)*2*180; |
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%needed for 0-360 longitude convention |
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if mygrid.nFaces==1; |
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xx=find(lon<0);lon(xx)=lon(xx)+360; |
| 39 |
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end; |
| 40 |
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obsPts=(rand(nobs,1)-0.5)*2; |
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%%%%%%%%%%%%%%%%%%%%%%% |
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%generate delaunay triangulation |
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if myenv.verbose>0; |
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gcmfaces_msg('* call gcmfaces_bindata : generate delaunay triangulation'); |
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end; |
| 48 |
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gcmfaces_bindata; |
| 49 |
gforget |
1.1 |
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| 50 |
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%%%%%%%%%%%%%%%%%%%%%%%% |
| 51 |
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%bin average random data |
| 52 |
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| 53 |
gforget |
1.11 |
if myenv.verbose>0; |
| 54 |
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gcmfaces_msg('* call gcmfaces_bindata : bin average data'); |
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end; |
| 56 |
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obsMap=gcmfaces_bindata(lon,lat,obsPts); |
| 57 |
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| 58 |
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%%%%%%%%%%%%%%%%%%%%%%%% |
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%format conversions |
| 60 |
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if myenv.verbose>0; |
| 61 |
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gcmfaces_msg('* call convert2array : convert from gcmfaces to array format'); |
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end; |
| 63 |
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obsArray=convert2array(obsMap);%put in gcmfaces format |
| 64 |
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if myenv.verbose>0; |
| 65 |
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gcmfaces_msg('* call convert2array : convert back to gcmfaces'); |
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end; |
| 67 |
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obsMap2=convert2array(obsArray);%put in gcmfaces format |
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if myenv.verbose>0; |
| 69 |
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gcmfaces_msg('* call convert2gcmfaces : convert from gcmfaces to file format'); |
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end; |
| 71 |
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obsOut=convert2gcmfaces(obsMap); %put in gcm input format |
| 72 |
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if myenv.verbose>0; |
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gcmfaces_msg('* summarizing data formats:'); |
| 74 |
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aa=whos('obs*'); |
| 75 |
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aaa=aa(4); bb=['[' num2str(aaa.size(1)) 'x' num2str(aaa.size(2)) ']']; |
| 76 |
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bb=fprintf(' %8s %8s %12s : data points (vector)\n',aaa.name,aaa.class,bb); |
| 77 |
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aaa=aa(2); bb=['[' num2str(aaa.size(1)) 'x' num2str(aaa.size(2)) ']']; |
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bb=fprintf(' %8s %8s %12s : gridded data (gcmfaces)\n',aaa.name,aaa.class,bb); |
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aaa=aa(1); bb=['[' num2str(aaa.size(1)) 'x' num2str(aaa.size(2)) ']']; |
| 80 |
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bb=fprintf(' %8s %8s %12s : array format\n',aaa.name,aaa.class,bb); |
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aaa=aa(3); bb=['[' num2str(aaa.size(1)) 'x' num2str(aaa.size(2)) ']']; |
| 82 |
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bb=fprintf(' %8s %8s %12s : output format\n',aaa.name,aaa.class,bb); |
| 83 |
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end; |
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| 85 |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 86 |
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%quick display |
| 87 |
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if myenv.verbose>0; |
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gcmfaces_msg('* crude display of results in array format'); |
| 89 |
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end; |
| 90 |
gforget |
1.13 |
figureL; imagescnan(obsArray','nancolor',[1 1 1]*0.8); axis xy; caxis([-1 1]*0.4); colorbar; |
| 91 |
gforget |
1.11 |
title('bin averaged data'); |
| 92 |
gforget |
1.1 |
|
| 93 |
gforget |
1.8 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 94 |
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%now illustrate the smoothing filter |
| 95 |
gforget |
1.11 |
if myenv.verbose>0; |
| 96 |
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gcmfaces_msg('* entering example_smooth : apply smoother to gridded data'); |
| 97 |
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end; |
| 98 |
gforget |
1.8 |
if doSmooth; example_smooth; end; |
| 99 |
gforget |
1.11 |
if myenv.verbose>0; |
| 100 |
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gcmfaces_msg('* leaving example_smooth'); |
| 101 |
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end; |
| 102 |
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| 103 |
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if myenv.verbose>0; |
| 104 |
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gcmfaces_msg('*** leaving example_bin_average'); |
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gcmfaces_msg('==============================================='); |
| 106 |
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end; |
| 107 |
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| 108 |
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| 109 |
gforget |
1.1 |
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