osse/utils/cart2cyluv.m

function [thetav,rhov] = cart2cyluv(u,v,thetai,rhoi,varargin)
% z=cart2cyl(c,xi,yi);
%

NN=size(u);
[x y nz]=size(u);
stepx=(x+1)/(x);
stepy=(y+1)/(y);
[Y,X] = meshgrid(-(x)/2:stepx:(x)/2,-(y)/2:stepy:(y)/2);
[theta,rho] = cart2pol(X,Y);

azimv=u.*cos(theta)+v.*-sin(theta);
radialv=u.*sin(theta)+v.*cos(theta);

theta=(theta./(pi*2)+0.5).*(size(thetai,2));
rho=max(rhoi)*rho/((x)/2);
ntheta=x;nrho=y;

THETA=reshape(theta,[1 ntheta*nrho]);
RHO=reshape(rho,[1 ntheta*nrho]);
del=griddata_preprocess(RHO,THETA,rhoi,thetai',varargin{:});

for k=1:nz;
 THETAV=reshape(azimv(:,:,k),[1 ntheta*nrho]);
 RHOV=reshape(radialv(:,:,k),[1 ntheta*nrho]);
thetav(:,:,k)=griddata(RHO,THETA,THETAV,rhoi,thetai',varargin{:});
rhov(:,:,k)=griddata(RHO,THETA,RHOV,rhoi,thetai',varargin{:});
end % k

% Split vertical and time dimensions
if size(NN,2)>2
thetav=reshape(thetav,[size(thetav,1) size(thetav,2) NN(3:end)]);
rhov=reshape(rhov,[size(rhov,1) size(rhov,2) NN(3:end)]);
end
1	function [thetav,rhov] = cart2cyluv(u,v,thetai,rhoi,varargin)
2	% z=cart2cyl(c,xi,yi);
3	%
4
5	NN=size(u);
6	[x y nz]=size(u);
7	stepx=(x+1)/(x);
8	stepy=(y+1)/(y);
9	[Y,X] = meshgrid(-(x)/2:stepx:(x)/2,-(y)/2:stepy:(y)/2);
10	[theta,rho] = cart2pol(X,Y);
11
12	azimv=u.cos(theta)+v.-sin(theta);
13	radialv=u.sin(theta)+v.cos(theta);
14
15	theta=(theta./(pi2)+0.5).(size(thetai,2));
16	rho=max(rhoi)*rho/((x)/2);
17	ntheta=x;nrho=y;
18
19	THETA=reshape(theta,[1 ntheta*nrho]);
20	RHO=reshape(rho,[1 ntheta*nrho]);
21	del=griddata_preprocess(RHO,THETA,rhoi,thetai',varargin{:});
22
23	for k=1:nz;
24	THETAV=reshape(azimv(:,:,k),[1 ntheta*nrho]);
25	RHOV=reshape(radialv(:,:,k),[1 ntheta*nrho]);
26	thetav(:,:,k)=griddata(RHO,THETA,THETAV,rhoi,thetai',varargin{:});
27	rhov(:,:,k)=griddata(RHO,THETA,RHOV,rhoi,thetai',varargin{:});
28	end % k
29
30	% Split vertical and time dimensions
31	if size(NN,2)>2
32	thetav=reshape(thetav,[size(thetav,1) size(thetav,2) NN(3:end)]);
33	rhov=reshape(rhov,[size(rhov,1) size(rhov,2) NN(3:end)]);
34	end