iFit/cart2sph

PURPOSE

SYNOPSIS

DESCRIPTION

 s = cart2sph(a,dim) : cartesian to polar/spherical representation of iData objects

   @iData/cart2sph function to 
     cart2sph(a) Transforms the object axes into spherical coordinates, which
       allow radial integration aferwards.
       The 'center' of the distribution (1st moment) is used as symmetry point 
       for the computation of the radius. All axes are considered to be
       distances.
     cart2sph(a,center) specifies the 'center' of the integration 
       (vector of coordinates) or a single value used as center on all
       axes (for instance 0).

 input:  a:     object or array (iData/array of)
         center:scalar or a vector which length is the object dimensionality 
 output: s: object with cartesian/spherical (iData)
 ex:     c=cart2sph(a);

 Version: Nov. 26, 2018
 See also iData, iData/rotate, iData/sum, iData/trapz, iData/camproj

CROSS-REFERENCE INFORMATION

• cart2sph s = cart2sph(a,dim) : cartesian to polar/spherical representation of iData objects
• copyobj b = copyobj(s) : makes a copy of iData object
• end b = end(s,index,n) : end value for iData objects
• getaxis [val, lab] = getaxis(s, AxisIndex) : get iData axis value and label
• iData
• isempty isempty(s) : true for empty iData object
• isnumeric b = isnumeric(s) : True for numeric iData object elements
• isvector b = isvector(s) : True for vector iData object
• label b = label(s, alias, label) : Change iData label for a given alias/axis
• meshgrid s = meshgrid(a) : transforms an iData object so that its axes are grids
• ndims d = ndims(s) : get the dimensionality of iData object
• ones s = ones(s,N,M,P,...) : initialize an iData array
• reshape c = reshape(a) : reshape the object Signal
• rmaxis s = rmaxis(s, Axis) : delete iData axes
• setalias [s,...] = setalias(s, AliasName, AliasLink, {AliasLabel}) : set iData aliases
• setaxis s = setaxis(s, rank, alias, value) : set iData axes
• size size(s) : get iData object size (number of elements)
• sqrt b = sqrt(s) : square root value of iData object
• std [half_width, center] = std(s, dim) : standard deviation of iData
• zeros s = zeros(s,N,M,P,...) : initialize an iData array

• cart2sph s = cart2sph(a,dim) : cartesian to polar/spherical representation of iData objects
• trapz s = trapz(a,dim) : computes the integral of iData objects elements along given dimension