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enderton |
1.1 |
function [] = merccube(XX,YY,C) |
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% merccube(x,y,c) |
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% |
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% Plots cubed-sphere data in mercator projection. (x,y) are |
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% coordinates, c is cell-centered scalar to be plotted. |
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% All arrays (x,y,c) should have dimensions of NxNx6 or 6NxN. |
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% |
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% The default plotting mode is shading faceted. Using this or |
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% shading flat, (x,y) should be the coordinates of grid-corners |
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% and can legitimately have dimension (N+1)x(N+1)x6. |
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% |
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% If using shading interp, then (x,y) must be the coordinates of |
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% the cell centers. |
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% |
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% e.g. |
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% |
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% xg=rdmds('XG'); |
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% yg=rdmds('YG'); |
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% ps=rdmds('Eta.0000000000'); |
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% mercube(xg,yg,ps); |
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% colorbar;xlabel('Longitude');ylabel('Latitude'); |
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% |
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% xc=rdmds('XC'); |
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% yc=rdmds('YC'); |
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% mercube(xc,yc,ps);shading interp |
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XXdim = size(XX); |
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XX = reshape(XX,[prod(XXdim),1]); |
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XX(find(abs(XX) < 0.01)) = 0; |
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XX(find(abs(XX) > 179.99)) = 180; |
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XX = reshape(XX,XXdim); |
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if max(max(max(YY)))-min(min(min(YY))) < 3*pi |
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X=XX*180/pi; |
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Y=YY*180/pi; |
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else |
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X=XX; |
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Y=YY; |
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end |
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Q=C; |
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if ndims(Q)==2 & size(Q,1)==6*size(Q,2) |
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[nx ny nt]=size(X); |
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X=permute( reshape(X,[nx/6 6 ny]),[1 3 2]); |
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Y=permute( reshape(Y,[nx/6 6 ny]),[1 3 2]); |
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Q=permute( reshape(Q,[nx/6 6 ny]),[1 3 2]); |
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elseif ndims(Q)==3 & size(Q,2)==6 |
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X=permute( X,[1 3 2]); |
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Y=permute( Y,[1 3 2]); |
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Q=permute( Q,[1 3 2]); |
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elseif ndims(Q)==3 & size(Q,3)==6 |
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[nx ny nt]=size(X); |
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else |
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size(XX) |
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size(YY) |
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size(C) |
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error('Dimensions should be 2 or 3 dimensions: NxNx6, 6NxN or Nx6xN'); |
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end |
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if size(X,1)==size(Q,1) |
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X(end+1,:,:)=NaN; |
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X(:,end+1,:)=NaN; |
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X(end,:,[1 3 5])=X(1,:,[2 4 6]); |
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X(:,end,[2 4 6])=X(:,1,[3 5 1]); |
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X(:,end,[1 3 5])=squeeze(X(1,end:-1:1,[3 5 1])); |
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X(end,:,[2 4 6])=squeeze(X(end:-1:1,1,[4 6 2])); |
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Y(end+1,:,:)=NaN; |
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Y(:,end+1,:)=NaN; |
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Y(end,:,[1 3 5])=Y(1,:,[2 4 6]); |
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Y(:,end,[2 4 6])=Y(:,1,[3 5 1]); |
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Y(:,end,[1 3 5])=squeeze(Y(1,end:-1:1,[3 5 1])); |
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Y(end,:,[2 4 6])=squeeze(Y(end:-1:1,1,[4 6 2])); |
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end |
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[nx ny nt]=size(X); |
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Q(end+1,:,:)=NaN; |
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Q(:,end+1,:)=NaN; |
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Q(end,:,[1 3 5])=Q(1,:,[2 4 6]); |
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Q(:,end,[2 4 6])=Q(:,1,[3 5 1]); |
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Q(:,end,[1 3 5])=squeeze(Q(1,end:-1:1,[3 5 1])); |
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Q(end,:,[2 4 6])=squeeze(Q(end:-1:1,1,[4 6 2])); |
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hnx=ceil(nx/2); |
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hny=ceil(ny/2); |
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for k=1:6; |
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i=1:hnx; |
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x=longitude(X(i,:,k)); |
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pcolor(x,Y(i,:,k),Q(i,:,k)) |
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axis([-180 180 -90 90]) |
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hold on |
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if max(max(max(x)))>180 |
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pcolor(x-360,Y(i,:,k),Q(i,:,k)) |
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end |
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i=hnx:nx; |
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x=longitude(X(i,:,k)); |
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pcolor(x,Y(i,:,k),Q(i,:,k)) |
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if max(max(max(x)))>180 |
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pcolor(x-360,Y(i,:,k),Q(i,:,k)) |
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end |
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end |
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hold off |
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