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Directory overview for Interpolation/

File summary

angle.pro
north stereographic polar projection Compute angles between grid lines and direction of the North pole (fom angle.
clickincell.pro
click on a map and find in which cell the click was
compute_fromirr_bilinear_weigaddr.pro
compute the weight and address needed to interpolate data from an "irregular 2D grid" (defined as a grid made of quadrilateral cells) to any grid using the bilinear method
compute_fromreg_bilinear_weigaddr.pro
compute the weight and address needed to interpolate data from a "regular grid" to any grid using the bilinear method
compute_fromreg_imoms3_weigaddr.pro
compute the weight and address need to interpolate data from a "regular grid" to any grid using the imoms3 method
cutpar.pro
cut p parallelogram(s) into p*n^2 parallelograms
cutsegment.pro
cut p segments into p*n equal parts
extrapolate.pro
extrapolate data (zinput) where maskinput equal 0 by filling step by step the coastline points with the mean value of the 8 neighbors (weighted by their mask values).
extrapsmooth.pro
similar to extrapolate but could to the job in a better way because the extrapolated values are smoothed.
file_interp.pro
interpolate a NetCDF file from a grid to another (both regular or not)
fromirr.pro
interpolate data from an irregular 2D grid to any 2D grid.
fromreg.pro
interpolate data from a "regular/rectangular grid" to any grid.
get_gridparams.pro
Case 1: extract from a NetCDF file longitude and latitude arrays, their dimensions and make sure it is 1D or 2D arrays Case 2: given longitude and latitude arrays, get their dimensions and make sure they are 1D or 2D arrays
imoms3.pro
inquad.pro
to find if an (x,y) point is in a quadrilateral (x1,x2,x3,x4)
inrecgrid.pro
given - a list of points, (x,y) position - the x and y limits of a rectangular grid find in which cell is located each given point.
lbcorca.pro
check the lateral boundaries condition (east-west and north) of a 2D/3D/4D array located on a grif of the orca grid familly.
ll_narcs_distances.pro
This function returns the longitude and latitude [lon, lat] of a point a given arc distance (-pi <= Arc_Dist <= pi), and azimuth (Az), from a specified location Lon0, Lat0.
map_npoints.pro
Return the distance in meter between all np0 points P0 and all np1 points P1 on a sphere.
neighbor.pro
find the closest point of (P0) within a list of np1 points P1 which can be on a sphere
quadrilateral2square.pro
warm (or map) an arbitrary quadrilateral onto a unit square according to the 4-point correspondences: - (x0,y0) -> (0,0) - (x1,y1) -> (1,0) - (x2,y2) -> (1,1) - (x3,y3) -> (0,1) This is the inverse function of square2quadrilateral.
spl_fstdrv.pro
returns the values of the first derivative of the interpolating function at the points X2i.
spl_incr.pro
Given the arrays X and Y, which tabulate a function (with the X[i] AND Y[i] in ascending order), and given an input value X2, the spl_incr function returns an interpolated value for the given values of X2.
spl_keep_mean.pro
Given the arrays X and Y, which tabulate a function (with the X[i] AND Y[i] in ascending order), and given an input value X2, the spl_incr function returns an interpolated value for the given values of X2.
square2quadrilateral.pro
warm (or map) a unit square onto an arbitrary quadrilateral according to the 4-point correspondences: - (0,0) -> (x0,y0) - (1,0) -> (x1,y1) - (1,1) -> (x2,y2) - (0,1) -> (x3,y3) The mapping is done using perspective transformation which preserve lines in all orientations and permit quadrilateral to quadrilateral mappings.
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