iFit/meshgrid

PURPOSE

SYNOPSIS

DESCRIPTION

 s = meshgrid(a) : transforms an iData object so that its axes are grids

   @iData/meshgrid function to transform iData object axes so that they are
     on a regular grid, as obtained from ndgrid. When the initial axes are not
     perpendicular/regular, the object Signal is interpolated on the new grid.
   meshgrid(a, 'vector' ...) forces all axes as vectors
   meshgrid(a, 'grid' ...)   forces all axes as grid with same size as Signal
   meshgrid(a, dims, ...)    specifies the size of the histogram
   meshgrid(a, 'fill' ...)   fills empty histogram bins (e.g. when converting from an event list)
   meshgrid(a, 'method' ...) uses specified method for interpolation as one of
                    linear (default), spline, cubic, or nearest

   A meshgrid histogram can be converted back into an event list with the 'event' method.

 input:  a: object or array (iData)
         method: 'linear','cubic','spline','nearest'
                 'vector' to get only vector axes
                 'fill'   to replace NaN's in the final data set
 output: s: object (iData)
 ex:     c=meshgrid(a); c=meshgrid(a, 'vector linear')
         c=meshgrid(a, 100, 'fill')

 Version: Nov. 26, 2018
 See also iData, iData/interp, iData/hist, iData/event, iData/fill

CROSS-REFERENCE INFORMATION

• ceil b = ceil(s) : upper integer round of iData object
• copyobj b = copyobj(s) : makes a copy of iData object
• end b = end(s,index,n) : end value for iData objects
• fill FILL fill-in over missing data
• getaxis [val, lab] = getaxis(s, AxisIndex) : get iData axis value and label
• hist hist(a, axis1, axis2, ...) computes the accumulated histogram from event data sets
• iData
• interp [b...] = interp(s, ...) : interpolate iData object
• isempty isempty(s) : true for empty iData object
• isnumeric b = isnumeric(s) : True for numeric iData object elements
• isscalar b = isscalar(s) : True for scalar iData objects
• isvector b = isvector(s) : True for vector iData object
• max [m,id] = max(a,b, dim) : computes the maximum value of iData object(s)
• 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
• prod s = prod(a,dim) : computes the product of iData objects elements
• reshape c = reshape(a) : reshape the object Signal
• setaxis s = setaxis(s, rank, alias, value) : set iData axes
• size size(s) : get iData object size (number of elements)
• strfind [match, field]=strfind(s, pattern, option) : search for pattern in iData
• zeros s = zeros(s,N,M,P,...) : initialize an iData array

• camproj s = camproj(a,dim) : projection/radial integration of iData objects elements
• cart2sph s = cart2sph(a,dim) : cartesian to polar/spherical representation of iData objects
• corrcoef c = corrcoef(a,b) : correlation coefficient with an iData object
• event c = event(a) : build an event list
• imroi imroi: define a region of interest on a data set
• meshgrid s = meshgrid(a) : transforms an iData object so that its axes are grids
• std [half_width, center] = std(s, dim) : standard deviation of iData