Creating 2D Matrix from latitude/longitude values
25 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I have three 1D arrays of the same dimensions (14114 x 1): latitude, longitude, and radar reflectivity. The 1D arrays are not sorted in any particular way (i.e., by latitude or longitude). Here are sample values for the first three elements:
latitude (1,1): 29.28
longitude (1,1): -92.5
radar (1,1): 25
latitude (2,1): 29.5
longitude (2,1): -88.48
radar (2,1): 22.5
latitude (3,1): 29.5
longitude (3,1): -88.06
radar (3,1): 20.5
I need to create a 2D lat/lon matrix containing the radar values from the 1D array that spans from longitude [-92.5:0.02:-87.5] in the X and latitude [27.2:0.02:32] in the Y, but has the appropriate radar reflectivity value from the 1D radar array. Lat/lon pairs not in the 1D radar array should be stored as 0 in the 2D matrix.
Appreciate any help you can provide.
0 Commenti
Risposte (1)
KSSV
il 2 Ott 2021
Let (x,y,r) be your lon,lat, radar reflectivity values in column.
xi = -92.5:0.02:-87.5 ;
yi = 27.2:0.02:32 ;
[X,Y] = meshgrid(xi,yi) ;
F = scatteredInterpolant(x,y,r) ;
R = F(X,Y) ;
pcolor(X,Y,R) ;
shading interp ;
colorbar
3 Commenti
KSSV
il 3 Ott 2021
You can use knnsearch to find the nearest points, assign values to these and rest to zeros.
Vedere anche
Categorie
Scopri di più su Environment and Clutter in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!